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Conserved domains on  [gi|1720387172|ref|XP_030104998|]
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limbic system-associated membrane protein isoform X3 [Mus musculus]

Protein Classification

immunoglobulin domain-containing protein( domain architecture ID 10310347)

immunoglobulin (Ig) domain-containing protein adopts a fold comprised of a sandwich of two beta sheets and may function in cell adhesion and pattern recognition; similar to Drosophila melanogaster DIP/Dpr cell recognition proteins, which are members of the Wirin family of IgSF proteins with neuronal wiring functions, and human IgLON proteins, a family of cell adhesion molecules

CATH:  2.60.40.10
SCOP:  3000071

Graphical summary

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List of domain hits

Name Accession Description Interval E-value
Ig_3 pfam13927
Immunoglobulin domain; This family contains immunoglobulin-like domains.
249-325 5.55e-19

Immunoglobulin domain; This family contains immunoglobulin-like domains.


:

Pssm-ID: 464046 [Multi-domain]  Cd Length: 78  Bit Score: 80.30  E-value: 5.55e-19
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 1720387172 249 PPTITESKSN-EATTGRQASLKCEASAVPAPDFEWYRDDTRINSANGLEIKSTEGQSSLTVTNVTEEHYGNYTCVAAN 325
Cdd:pfam13927   1 KPVITVSPSSvTVREGETVTLTCEATGSPPPTITWYKNGEPISSGSTRSRSLSGSNSTLTISNVTRSDAGTYTCVASN 78
Ig_3 pfam13927
Immunoglobulin domain; This family contains immunoglobulin-like domains.
162-232 5.81e-13

Immunoglobulin domain; This family contains immunoglobulin-like domains.


:

Pssm-ID: 464046 [Multi-domain]  Cd Length: 78  Bit Score: 63.74  E-value: 5.81e-13
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 1720387172 162 PPKISNISSDVTVNEGSNVTLVCMANGRPEPVITWRH-------LTPLGREFEGEEEYLEILGITREQSGKYECKAAN 232
Cdd:pfam13927   1 KPVITVSPSSVTVREGETVTLTCEATGSPPPTITWYKngepissGSTRSRSLSGSNSTLTISNVTRSDAGTYTCVASN 78
Ig super family cl11960
Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found ...
69-159 1.83e-12

Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found in the Ig superfamily. The Ig superfamily is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. Members of this group are components of immunoglobulin, neuroglia, cell surface glycoproteins, including T-cell receptors, CD2, CD4, CD8, and membrane glycoproteins, including butyrophilin and chondroitin sulfate proteoglycan core protein. A predominant feature of most Ig domains is a disulfide bridge connecting the two beta-sheets with a tryptophan residue packed against the disulfide bond. Ig superfamily (IgSF) domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Typically, the V-set domains have A, B, E, and D strands in one sheet and A', G, F, C, C' and C" in the other. The structures in C1-set are smaller than those in the V-set; they have one beta sheet that is formed by strands A, B, E, and D and the other by strands G, F, C, and C'. Moreover, a C1-set Ig domain contains a short C' strand (three residues) and lacks A' and C" strand. Unlike other Ig domain sets, C2-set structures do not have a D strand. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


The actual alignment was detected with superfamily member cd05717:

Pssm-ID: 472250  Cd Length: 94  Bit Score: 62.92  E-value: 1.83e-12
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172  69 TDNITVRQGDTAILRCVVED-KNSKVAWLNRSG-IIFAGHDKWSLDPRVELEKRHALEYSLRIQKVDVYDEGSYTCSVQT 146
Cdd:cd05717     3 TQDVTVVEGETLTLKCQVSLrDDSSLQWLNPNGqTIYFNDKRALRDSRYQLLNHSASELSISVSNVTLSDEGVYTCLHYT 82
                          90
                  ....*....|...
gi 1720387172 147 QhEPKTSQVYLIV 159
Cdd:cd05717    83 D-PVSTKKVTVTV 94
 
Name Accession Description Interval E-value
Ig_3 pfam13927
Immunoglobulin domain; This family contains immunoglobulin-like domains.
249-325 5.55e-19

Immunoglobulin domain; This family contains immunoglobulin-like domains.


Pssm-ID: 464046 [Multi-domain]  Cd Length: 78  Bit Score: 80.30  E-value: 5.55e-19
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 1720387172 249 PPTITESKSN-EATTGRQASLKCEASAVPAPDFEWYRDDTRINSANGLEIKSTEGQSSLTVTNVTEEHYGNYTCVAAN 325
Cdd:pfam13927   1 KPVITVSPSSvTVREGETVTLTCEATGSPPPTITWYKNGEPISSGSTRSRSLSGSNSTLTISNVTRSDAGTYTCVASN 78
Ig cd00096
Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found ...
266-335 2.81e-14

Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found in the Ig superfamily. The Ig superfamily is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. Members of this group are components of immunoglobulin, neuroglia, cell surface glycoproteins, including T-cell receptors, CD2, CD4, CD8, and membrane glycoproteins, including butyrophilin and chondroitin sulfate proteoglycan core protein. A predominant feature of most Ig domains is a disulfide bridge connecting the two beta-sheets with a tryptophan residue packed against the disulfide bond. Ig superfamily (IgSF) domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Typically, the V-set domains have A, B, E, and D strands in one sheet and A', G, F, C, C' and C" in the other. The structures in C1-set are smaller than those in the V-set; they have one beta sheet that is formed by strands A, B, E, and D and the other by strands G, F, C, and C'. Moreover, a C1-set Ig domain contains a short C' strand (three residues) and lacks A' and C" strand. Unlike other Ig domain sets, C2-set structures do not have a D strand. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409353 [Multi-domain]  Cd Length: 70  Bit Score: 66.97  E-value: 2.81e-14
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 266 ASLKCEASAVPAPDFEWYRDDTRINSANGLEIKSTEGQSSLTVTNVTEEHYGNYTCVAANKLGVTNASLV 335
Cdd:cd00096     1 VTLTCSASGNPPPTITWYKNGKPLPPSSRDSRRSELGNGTLTISNVTLEDSGTYTCVASNSAGGSASASV 70
IG_like smart00410
Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG.
255-336 2.14e-13

Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG.


Pssm-ID: 214653 [Multi-domain]  Cd Length: 85  Bit Score: 65.22  E-value: 2.14e-13
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172  255 SKSNEATTGRQASLKCEASAVPAPDFEWYRDDTR-INSANGLEIKSTEGQSSLTVTNVTEEHYGNYTCVAANKLGVTNAS 333
Cdd:smart00410   1 PPSVTVKEGESVTLSCEASGSPPPEVTWYKQGGKlLAESGRFSVSRSGSTSTLTISNVTPEDSGTYTCAATNSSGSASSG 80

                   ...
gi 1720387172  334 LVL 336
Cdd:smart00410  81 TTL 83
Ig_3 pfam13927
Immunoglobulin domain; This family contains immunoglobulin-like domains.
162-232 5.81e-13

Immunoglobulin domain; This family contains immunoglobulin-like domains.


Pssm-ID: 464046 [Multi-domain]  Cd Length: 78  Bit Score: 63.74  E-value: 5.81e-13
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 1720387172 162 PPKISNISSDVTVNEGSNVTLVCMANGRPEPVITWRH-------LTPLGREFEGEEEYLEILGITREQSGKYECKAAN 232
Cdd:pfam13927   1 KPVITVSPSSVTVREGETVTLTCEATGSPPPTITWYKngepissGSTRSRSLSGSNSTLTISNVTRSDAGTYTCVASN 78
IgV_1_Necl_like cd05717
First (N-terminal) immunoglobulin (Ig)-like domain of the nectin-like molecules; member of the ...
69-159 1.83e-12

First (N-terminal) immunoglobulin (Ig)-like domain of the nectin-like molecules; member of the V-set of Ig superfamily (IgSF) domains; The members here are composed of the N-terminal immunoglobulin (Ig)-like domain of the nectin-like molecules Necl-1 (also known as cell adhesion molecule 3 (CADM3)), Necl-2 (CADM1), Necl-3 (CADM2), and similar proteins. At least five nectin-like molecules have been identified (Necl-1 to Necl-5). They all have an extracellular region containing three Ig-like domains, a transmembrane region, and a cytoplasmic region. The N-terminal Ig-like domain of the extracellular region belongs to the V-type subfamily of Ig domains, is essential to cell-cell adhesion, and plays a part in the interaction with the envelope glycoprotein D of various viruses. Necl-1, Necl-2, and Necl-3 have Ca(2+)-independent homophilic and heterophilic cell-cell adhesion activity. Necl-1 is specifically expressed in neural tissue, and is important to the formation of synapses, axon bundles, and myelinated axons. Necl-2 is expressed in a wide variety of tissues and is a putative tumour suppressor gene which is downregulated in aggressive neuroblastoma. Necl-3 accumulates in central and peripheral nervous system tissue and has been shown to selectively interact with oligodendrocytes. This group also contains Class-I MHC-restricted T-cell-associated molecule (CRTAM), whose expression pattern is consistent with its expression in Class-I MHC-restricted T-cells.


Pssm-ID: 409382  Cd Length: 94  Bit Score: 62.92  E-value: 1.83e-12
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172  69 TDNITVRQGDTAILRCVVED-KNSKVAWLNRSG-IIFAGHDKWSLDPRVELEKRHALEYSLRIQKVDVYDEGSYTCSVQT 146
Cdd:cd05717     3 TQDVTVVEGETLTLKCQVSLrDDSSLQWLNPNGqTIYFNDKRALRDSRYQLLNHSASELSISVSNVTLSDEGVYTCLHYT 82
                          90
                  ....*....|...
gi 1720387172 147 QhEPKTSQVYLIV 159
Cdd:cd05717    83 D-PVSTKKVTVTV 94
IgI_1_MuSK cd20970
agrin-responsive first immunoglobulin-like domains (Ig1) of the MuSK ectodomain; a member of ...
158-246 2.27e-10

agrin-responsive first immunoglobulin-like domains (Ig1) of the MuSK ectodomain; a member of the I-set of IgSF domains; The members here are composed of the first immunoglobulin-like domains (Ig1) of the Muscle-specific kinase (MuSK). MuSK is a receptor tyrosine kinase specifically expressed in skeletal muscle, where it plays a central role in the formation and maintenance of the neuromuscular junction (NMJ). MuSK is activated by agrin, a neuron-derived heparan sulfate proteoglycan. The activation of MUSK in myotubes regulates the formation of NMJs through the regulation of different processes including the specific expression of genes in subsynaptic nuclei, the reorganization of the actin cytoskeleton and the clustering of the acetylcholine receptors (AChR) in the postsynaptic membrane. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Unlike the V-set, one of the distinctive features of I-set domains is the lack of a C" strand. The structure of the MuSK lacks this strand and thus it belongs to the I-set of the IgSF. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis.


Pssm-ID: 409562 [Multi-domain]  Cd Length: 92  Bit Score: 56.75  E-value: 2.27e-10
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 158 IVQVPPKisniSSDVTVNEGSNVTLVCMANGRPEPVITWRH------LTPLGREFEGEEEYLEILGITREQSGKYECKAA 231
Cdd:cd20970     2 VISTPQP----SFTVTAREGENATFMCRAEGSPEPEISWTRngnliiEFNTRYIVRENGTTLTIRNIRRSDMGIYLCIAS 77
                          90
                  ....*....|....*
gi 1720387172 232 NEVSSADVKQVKVTV 246
Cdd:cd20970    78 NGVPGSVEKRITLQV 92
IG_like smart00410
Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG.
169-246 1.15e-09

Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG.


Pssm-ID: 214653 [Multi-domain]  Cd Length: 85  Bit Score: 54.43  E-value: 1.15e-09
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172  169 SSDVTVNEGSNVTLVCMANGRPEPVITWRH-----LTPLGREFEGEEEYLEIL---GITREQSGKYECKAANEVSSADvK 240
Cdd:smart00410   1 PPSVTVKEGESVTLSCEASGSPPPEVTWYKqggklLAESGRFSVSRSGSTSTLtisNVTPEDSGTYTCAATNSSGSAS-S 79

                   ....*.
gi 1720387172  241 QVKVTV 246
Cdd:smart00410  80 GTTLTV 85
IG_like smart00410
Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG.
71-159 3.64e-09

Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG.


Pssm-ID: 214653 [Multi-domain]  Cd Length: 85  Bit Score: 53.28  E-value: 3.64e-09
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172   71 NITVRQGDTAILRCVVE-DKNSKVAWLNRSGIIFAGHDKWSLDprvelekRHALEYSLRIQKVDVYDEGSYTCSVQTQHE 149
Cdd:smart00410   3 SVTVKEGESVTLSCEASgSPPPEVTWYKQGGKLLAESGRFSVS-------RSGSTSTLTISNVTPEDSGTYTCAATNSSG 75
                           90
                   ....*....|
gi 1720387172  150 PKTSQVYLIV 159
Cdd:smart00410  76 SASSGTTLTV 85
I-set pfam07679
Immunoglobulin I-set domain;
65-142 2.32e-04

Immunoglobulin I-set domain;


Pssm-ID: 400151 [Multi-domain]  Cd Length: 90  Bit Score: 39.55  E-value: 2.32e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172  65 FNRGTDNITVRQGDTAILRCVVE-DKNSKVAWL-NRSGIifaghdkwSLDPRVELEKRHAlEYSLRIQKVDVYDEGSYTC 142
Cdd:pfam07679   3 FTQKPKDVEVQEGESARFTCTVTgTPDPEVSWFkDGQPL--------RSSDRFKVTYEGG-TYTLTISNVQPDDSGKYTC 73
 
Name Accession Description Interval E-value
Ig_3 pfam13927
Immunoglobulin domain; This family contains immunoglobulin-like domains.
249-325 5.55e-19

Immunoglobulin domain; This family contains immunoglobulin-like domains.


Pssm-ID: 464046 [Multi-domain]  Cd Length: 78  Bit Score: 80.30  E-value: 5.55e-19
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 1720387172 249 PPTITESKSN-EATTGRQASLKCEASAVPAPDFEWYRDDTRINSANGLEIKSTEGQSSLTVTNVTEEHYGNYTCVAAN 325
Cdd:pfam13927   1 KPVITVSPSSvTVREGETVTLTCEATGSPPPTITWYKNGEPISSGSTRSRSLSGSNSTLTISNVTRSDAGTYTCVASN 78
I-set pfam07679
Immunoglobulin I-set domain;
249-336 1.30e-15

Immunoglobulin I-set domain;


Pssm-ID: 400151 [Multi-domain]  Cd Length: 90  Bit Score: 71.52  E-value: 1.30e-15
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 249 PPTITESKSNEATTGRQASLKCEASAVPAPDFEWYRDDTRINSANGLEIKSTEGQSSLTVTNVTEEHYGNYTCVAANKLG 328
Cdd:pfam07679   1 PKFTQKPKDVEVQEGESARFTCTVTGTPDPEVSWFKDGQPLRSSDRFKVTYEGGTYTLTISNVQPDDSGKYTCVATNSAG 80

                  ....*...
gi 1720387172 329 VTNASLVL 336
Cdd:pfam07679  81 EAEASAEL 88
Ig cd00096
Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found ...
266-335 2.81e-14

Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found in the Ig superfamily. The Ig superfamily is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. Members of this group are components of immunoglobulin, neuroglia, cell surface glycoproteins, including T-cell receptors, CD2, CD4, CD8, and membrane glycoproteins, including butyrophilin and chondroitin sulfate proteoglycan core protein. A predominant feature of most Ig domains is a disulfide bridge connecting the two beta-sheets with a tryptophan residue packed against the disulfide bond. Ig superfamily (IgSF) domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Typically, the V-set domains have A, B, E, and D strands in one sheet and A', G, F, C, C' and C" in the other. The structures in C1-set are smaller than those in the V-set; they have one beta sheet that is formed by strands A, B, E, and D and the other by strands G, F, C, and C'. Moreover, a C1-set Ig domain contains a short C' strand (three residues) and lacks A' and C" strand. Unlike other Ig domain sets, C2-set structures do not have a D strand. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409353 [Multi-domain]  Cd Length: 70  Bit Score: 66.97  E-value: 2.81e-14
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 266 ASLKCEASAVPAPDFEWYRDDTRINSANGLEIKSTEGQSSLTVTNVTEEHYGNYTCVAANKLGVTNASLV 335
Cdd:cd00096     1 VTLTCSASGNPPPTITWYKNGKPLPPSSRDSRRSELGNGTLTISNVTLEDSGTYTCVASNSAGGSASASV 70
IG_like smart00410
Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG.
255-336 2.14e-13

Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG.


Pssm-ID: 214653 [Multi-domain]  Cd Length: 85  Bit Score: 65.22  E-value: 2.14e-13
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172  255 SKSNEATTGRQASLKCEASAVPAPDFEWYRDDTR-INSANGLEIKSTEGQSSLTVTNVTEEHYGNYTCVAANKLGVTNAS 333
Cdd:smart00410   1 PPSVTVKEGESVTLSCEASGSPPPEVTWYKQGGKlLAESGRFSVSRSGSTSTLTISNVTPEDSGTYTCAATNSSGSASSG 80

                   ...
gi 1720387172  334 LVL 336
Cdd:smart00410  81 TTL 83
Ig_Pro_neuregulin cd05750
Immunoglobulin (Ig)-like domain in neuregulins; The members here are composed of the ...
250-333 3.30e-13

Immunoglobulin (Ig)-like domain in neuregulins; The members here are composed of the immunoglobulin (Ig)-like domain in neuregulins (NRGs). NRGs are signaling molecules which participate in cell-cell interactions in the nervous system, breast, heart, and other organ systems, and are implicated in the pathology of diseases including schizophrenia, multiple sclerosis, and breast cancer. There are four members of the neuregulin gene family (NRG-1, NRG-2, NRG-3, and NRG-4). The NRG-1 protein, binds to and activates the tyrosine kinases receptors ErbB3 and ErbB4, initiating signaling cascades. The other NRGs proteins bind one or the other or both of these ErbBs. NRG-1 has multiple functions: in the brain it regulates various processes such as radial glia formation and neuronal migration, dendritic development, and expression of neurotransmitters receptors, while in the peripheral nervous system NRG-1 regulates processes such as target cell differentiation, and Schwann cell survival. There are many NRG-1 isoforms which arise from the alternative splicing of mRNA. Less is known of the functions of the other NRGs. NRG-2 and NRG-3 are expressed predominantly in the nervous system. NRG-2 is expressed by motor neurons and terminal Schwann cells, and is concentrated near synaptic sites and may be a signal that regulates synaptic differentiation. NRG-4 has been shown to direct pancreatic islet cell development towards the delta-cell lineage.


Pssm-ID: 409408 [Multi-domain]  Cd Length: 92  Bit Score: 64.84  E-value: 3.30e-13
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 250 PTITESKSNEATTGRQASLKCEASAV-PAPDFEWYRDDTRINSANGLEIK--STEGQSSLTVTNVTEEHYGNYTCVAANK 326
Cdd:cd05750     1 PKLKEMKSQTVQEGSKLVLKCEATSEnPSPRYRWFKDGKELNRKRPKNIKirNKKKNSELQINKAKLEDSGEYTCVVENI 80

                  ....*..
gi 1720387172 327 LGVTNAS 333
Cdd:cd05750    81 LGKDTVT 87
Ig_3 pfam13927
Immunoglobulin domain; This family contains immunoglobulin-like domains.
162-232 5.81e-13

Immunoglobulin domain; This family contains immunoglobulin-like domains.


Pssm-ID: 464046 [Multi-domain]  Cd Length: 78  Bit Score: 63.74  E-value: 5.81e-13
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 1720387172 162 PPKISNISSDVTVNEGSNVTLVCMANGRPEPVITWRH-------LTPLGREFEGEEEYLEILGITREQSGKYECKAAN 232
Cdd:pfam13927   1 KPVITVSPSSVTVREGETVTLTCEATGSPPPTITWYKngepissGSTRSRSLSGSNSTLTISNVTRSDAGTYTCVASN 78
IgV_1_Necl_like cd05717
First (N-terminal) immunoglobulin (Ig)-like domain of the nectin-like molecules; member of the ...
69-159 1.83e-12

First (N-terminal) immunoglobulin (Ig)-like domain of the nectin-like molecules; member of the V-set of Ig superfamily (IgSF) domains; The members here are composed of the N-terminal immunoglobulin (Ig)-like domain of the nectin-like molecules Necl-1 (also known as cell adhesion molecule 3 (CADM3)), Necl-2 (CADM1), Necl-3 (CADM2), and similar proteins. At least five nectin-like molecules have been identified (Necl-1 to Necl-5). They all have an extracellular region containing three Ig-like domains, a transmembrane region, and a cytoplasmic region. The N-terminal Ig-like domain of the extracellular region belongs to the V-type subfamily of Ig domains, is essential to cell-cell adhesion, and plays a part in the interaction with the envelope glycoprotein D of various viruses. Necl-1, Necl-2, and Necl-3 have Ca(2+)-independent homophilic and heterophilic cell-cell adhesion activity. Necl-1 is specifically expressed in neural tissue, and is important to the formation of synapses, axon bundles, and myelinated axons. Necl-2 is expressed in a wide variety of tissues and is a putative tumour suppressor gene which is downregulated in aggressive neuroblastoma. Necl-3 accumulates in central and peripheral nervous system tissue and has been shown to selectively interact with oligodendrocytes. This group also contains Class-I MHC-restricted T-cell-associated molecule (CRTAM), whose expression pattern is consistent with its expression in Class-I MHC-restricted T-cells.


Pssm-ID: 409382  Cd Length: 94  Bit Score: 62.92  E-value: 1.83e-12
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172  69 TDNITVRQGDTAILRCVVED-KNSKVAWLNRSG-IIFAGHDKWSLDPRVELEKRHALEYSLRIQKVDVYDEGSYTCSVQT 146
Cdd:cd05717     3 TQDVTVVEGETLTLKCQVSLrDDSSLQWLNPNGqTIYFNDKRALRDSRYQLLNHSASELSISVSNVTLSDEGVYTCLHYT 82
                          90
                  ....*....|...
gi 1720387172 147 QhEPKTSQVYLIV 159
Cdd:cd05717    83 D-PVSTKKVTVTV 94
IgV_1_Necl-3 cd07701
First (N-terminal) immunoglobulin (Ig)-like domain of nectin-like molecule-3; member of the ...
69-159 1.90e-11

First (N-terminal) immunoglobulin (Ig)-like domain of nectin-like molecule-3; member of the V-set of Ig superfamily (IgSF) domains; The members here are composed of the N-terminal immunoglobulin (Ig)-like domain of nectin-like molecule-3, Necl-3 (also known as cell adhesion molecule 2 (CADM2), SynCAM2, IGSF4D). Nectin-like molecules have similar domain structures to those of nectins. At least five nectin-like molecules have been identified (Necl-1 - Necl-5). They all have an extracellular region containing three Ig-like domains, a transmembrane region, and a cytoplasmic region. The N-terminal Ig-like domain of the extracellular region, belongs to the V-type subfamily of Ig domains, is essential to cell-cell adhesion, and plays a part in the interaction with the envelope glycoprotein D of various viruses. Necl-3 accumulates in central and peripheral nervous system tissue, and has been shown to selectively interact with oligodendrocytes.


Pssm-ID: 409498  Cd Length: 96  Bit Score: 60.10  E-value: 1.90e-11
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172  69 TDNITVRQGDTAILRCVVE-DKNSKVAWLNRSG-IIFAGHDKWSLDPRVELEKRHALEYSLRIQKVDVYDEGSYTCSVQT 146
Cdd:cd07701     4 TQNVTVVEGGTANLTCRVDqNDNTSLQWSNPAQqTLYFDDKKALRDNRIELVRASWHELSISISDVSLSDEGQYTCSLFT 83
                          90
                  ....*....|...
gi 1720387172 147 QhEPKTSQVYLIV 159
Cdd:cd07701    84 M-PVKTSKAYLTV 95
I-set pfam07679
Immunoglobulin I-set domain;
163-246 7.41e-11

Immunoglobulin I-set domain;


Pssm-ID: 400151 [Multi-domain]  Cd Length: 90  Bit Score: 58.04  E-value: 7.41e-11
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 163 PKISNISSDVTVNEGSNVTLVCMANGRPEPVITWRH----LTPLGREFEGEEEYL---EILGITREQSGKYECKAANEVS 235
Cdd:pfam07679   1 PKFTQKPKDVEVQEGESARFTCTVTGTPDPEVSWFKdgqpLRSSDRFKVTYEGGTytlTISNVQPDDSGKYTCVATNSAG 80
                          90
                  ....*....|.
gi 1720387172 236 SADVKqVKVTV 246
Cdd:pfam07679  81 EAEAS-AELTV 90
IgI_Myotilin_C_like cd05744
Immunoglobulin (Ig)-like domain of myotilin, palladin, and myopalladin; member of the I-set of ...
257-336 1.32e-10

Immunoglobulin (Ig)-like domain of myotilin, palladin, and myopalladin; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the immunoglobulin (Ig)-like domain in myotilin, palladin, and myopalladin. Myotilin, palladin, and myopalladin function as scaffolds that regulate actin organization. Myotilin and myopalladin are most abundant in skeletal and cardiac muscle; palladin is ubiquitously expressed in the organs of developing vertebrates and plays a key role in cellular morphogenesis. The three family members each interact with specific molecular partners with all three binding to alpha-actinin; In addition, palladin also binds to vasodilator-stimulated phosphoprotein (VASP) and ezrin, myotilin binds to filamin and actin, and myopalladin also binds to nebulin and cardiac ankyrin repeat protein (CARP). This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409405 [Multi-domain]  Cd Length: 91  Bit Score: 57.51  E-value: 1.32e-10
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 257 SNEATTGRQASLKCEASAVPAPDFEWYRDD--TRINSANGLEIKSTeGQSSLTVTNVTEEHYGNYTCVAANKLGVTNASL 334
Cdd:cd05744     9 DLEVQEGRLCRFDCKVSGLPTPDLFWQLNGkpVRPDSAHKMLVREN-GRHSLIIEPVTKRDAGIYTCIARNRAGENSFNA 87

                  ..
gi 1720387172 335 VL 336
Cdd:cd05744    88 EL 89
ig pfam00047
Immunoglobulin domain; Members of the immunoglobulin superfamily are found in hundreds of ...
263-336 2.05e-10

Immunoglobulin domain; Members of the immunoglobulin superfamily are found in hundreds of proteins of different functions. Examples include antibodies, the giant muscle kinase titin and receptor tyrosine kinases. Immunoglobulin-like domains may be involved in protein-protein and protein-ligand interactions.


Pssm-ID: 395002  Cd Length: 86  Bit Score: 56.82  E-value: 2.05e-10
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 1720387172 263 GRQASLKCEAS-AVPAPDFEWYRDDTR-INSANGLEIKSTEGQSSLTVTNVTEEHYGNYTCVAANKLGVTNASLVL 336
Cdd:pfam00047  11 GDSATLTCSAStGSPGPDVTWSKEGGTlIESLKVKHDNGRTTQSSLLISNVTKEDAGTYTCVVNNPGGSATLSTSL 86
IgI_1_MuSK cd20970
agrin-responsive first immunoglobulin-like domains (Ig1) of the MuSK ectodomain; a member of ...
158-246 2.27e-10

agrin-responsive first immunoglobulin-like domains (Ig1) of the MuSK ectodomain; a member of the I-set of IgSF domains; The members here are composed of the first immunoglobulin-like domains (Ig1) of the Muscle-specific kinase (MuSK). MuSK is a receptor tyrosine kinase specifically expressed in skeletal muscle, where it plays a central role in the formation and maintenance of the neuromuscular junction (NMJ). MuSK is activated by agrin, a neuron-derived heparan sulfate proteoglycan. The activation of MUSK in myotubes regulates the formation of NMJs through the regulation of different processes including the specific expression of genes in subsynaptic nuclei, the reorganization of the actin cytoskeleton and the clustering of the acetylcholine receptors (AChR) in the postsynaptic membrane. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Unlike the V-set, one of the distinctive features of I-set domains is the lack of a C" strand. The structure of the MuSK lacks this strand and thus it belongs to the I-set of the IgSF. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis.


Pssm-ID: 409562 [Multi-domain]  Cd Length: 92  Bit Score: 56.75  E-value: 2.27e-10
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 158 IVQVPPKisniSSDVTVNEGSNVTLVCMANGRPEPVITWRH------LTPLGREFEGEEEYLEILGITREQSGKYECKAA 231
Cdd:cd20970     2 VISTPQP----SFTVTAREGENATFMCRAEGSPEPEISWTRngnliiEFNTRYIVRENGTTLTIRNIRRSDMGIYLCIAS 77
                          90
                  ....*....|....*
gi 1720387172 232 NEVSSADVKQVKVTV 246
Cdd:cd20970    78 NGVPGSVEKRITLQV 92
IgI_NCAM-1_like cd05732
Immunoglobulin (Ig)-like I-set domain of Neural Cell Adhesion Molecule 1 (NCAM-1) and similar ...
250-336 3.82e-10

Immunoglobulin (Ig)-like I-set domain of Neural Cell Adhesion Molecule 1 (NCAM-1) and similar proteins; The members here are composed of the fourth immunoglobulin (Ig)-like domain of Neural Cell Adhesion Molecule (NCAM-1). NCAM plays important roles in the development and regeneration of the central nervous system, in synaptogenesis and neural migration. NCAM mediates cell-cell and cell-substratum recognition and adhesion via homophilic (NCAM-NCAM), and heterophilic (NCAM-non-NCAM), interactions. NCAM is expressed as three major isoforms having different intracellular extensions. The extracellular portion of NCAM has five N-terminal Ig-like domains and two fibronectin type III domains. The double zipper adhesion complex model for NCAM homophilic binding involves Ig1, Ig2, and Ig3. By this model, Ig1 and Ig2 mediate dimerization of NCAM molecules situated on the same cell surface (cis interactions), and Ig3 domains mediate interactions between NCAM molecules expressed on the surface of opposing cells (trans interactions), through binding to the Ig1 and Ig2 domains. The adhesive ability of NCAM is modulated by the addition of polysialic acid chains to the fifth Ig-like domain. Also included in this group is NCAM-2 (also known as OCAM/mamFas II and RNCAM) NCAM-2 is differentially expressed in the developing and mature olfactory epithelium (OE). One of the unique features of I-set domains is the lack of a C" strand. The structures of this group show that the Ig domain lacks this strand and thus is a member of the I-set of Ig domains.


Pssm-ID: 409395 [Multi-domain]  Cd Length: 96  Bit Score: 56.38  E-value: 3.82e-10
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 250 PTITESKSNEATTGRQASLKCEASAVPAPDFEWYRDDTRINSANG-----LEIKSTEGQSSLTVTNVTEEHYGNYTCVAA 324
Cdd:cd05732     3 PKITYLENQTAVELEQITLTCEAEGDPIPEITWRRATRGISFEEGdldgrIVVRGHARVSSLTLKDVQLTDAGRYDCEAS 82
                          90
                  ....*....|..
gi 1720387172 325 NKLGVTNASLVL 336
Cdd:cd05732    83 NRIGGDQQSMYL 94
IgI_4_MYLK-like cd20976
Fourth Ig-like domain from smooth muscle myosin light chain kinase and similar domains ; a ...
249-333 4.25e-10

Fourth Ig-like domain from smooth muscle myosin light chain kinase and similar domains ; a member of the I-set of IgSF domains; The members here are composed of the fourth immunoglobulin (Ig)-like domain from smooth muscle myosin light chain kinase (MYLK) and similar domains. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Unlike the V-set, one of the distinctive features of I-set domains is the lack of a C" strand. The structure of this group shows that the fourth Ig-like domain from myosin light chain kinase lacks this strand and thus belongs to the I-set of the IgSF. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis.


Pssm-ID: 409568 [Multi-domain]  Cd Length: 90  Bit Score: 56.10  E-value: 4.25e-10
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 249 PPTITESKSN-EATTGRQASLKCEASAVPAPDFEWYRDDTRINSAnGLEIKSTEGQSSLTVTNVTEEHYGNYTCVAANKL 327
Cdd:cd20976     1 APSFSSVPKDlEAVEGQDFVAQCSARGKPVPRITWIRNAQPLQYA-ADRSTCEAGVGELHIQDVLPEDHGTYTCLAKNAA 79

                  ....*.
gi 1720387172 328 GVTNAS 333
Cdd:cd20976    80 GQVSCS 85
IgI_2_Titin_Z1z2-like cd20972
Second Ig-like domain of the giant muscle protein titin Z1z2 in the sarcomeric Z-disk, and ...
249-337 4.43e-10

Second Ig-like domain of the giant muscle protein titin Z1z2 in the sarcomeric Z-disk, and similar domains; a member of the I-set of IgSF domains; The members here are composed of the second immunoglobulin (Ig)-like domain of the giant muscle protein titin Z1z2 in the sarcomeric Z-disk and similar proteins. Titin is a key component in the assembly and functioning of vertebrate striated muscles. By providing connections at the level of individual microfilaments, it contributes to the fine balance of forces between the two halves of the sarcomere. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Unlike the V-set, one of the distinctive features of I-set domains is the lack of a C" strand. The structure of the titin Z1z2 lacks this strand and thus it belongs to the I-set of the IgSF. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis.


Pssm-ID: 409564 [Multi-domain]  Cd Length: 91  Bit Score: 56.05  E-value: 4.43e-10
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 249 PPTITES-KSNEATTGRQASLKCEASAVPAPDFEWYRDDTRINSANGLEIKSTEGQSSLTVTNVTEEHYGNYTCVAANKL 327
Cdd:cd20972     1 PPQFIQKlRSQEVAEGSKVRLECRVTGNPTPVVRWFCEGKELQNSPDIQIHQEGDLHSLIIAEAFEEDTGRYSCLATNSV 80
                          90
                  ....*....|
gi 1720387172 328 GVTNASLVLF 337
Cdd:cd20972    81 GSDTTSAEIF 90
IgI_3_NCAM-1 cd05730
Third immunoglobulin (Ig)-like domain of Neural Cell Adhesion Molecule 1 (NCAM-1); member of ...
249-336 7.45e-10

Third immunoglobulin (Ig)-like domain of Neural Cell Adhesion Molecule 1 (NCAM-1); member of the I-set of IgSF domains; The members here are composed of the third immunoglobulin (Ig)-like domain of Neural Cell Adhesion Molecule (NCAM-1). NCAM plays important roles in the development and regeneration of the central nervous system, in synaptogenesis and neural migration. NCAM mediates cell-cell and cell-substratum recognition and adhesion via homophilic (NCAM-NCAM), and heterophilic (NCAM-non-NCAM), interactions. NCAM is expressed as three major isoforms having different intracellular extensions. The extracellular portion of NCAM has five N-terminal Ig-like domains and two fibronectin type III domains. The double zipper adhesion complex model for NCAM homophilic binding involves Ig1, Ig2, and Ig3. By this model, Ig1 and Ig2 mediate dimerization of NCAM molecules situated on the same cell surface (cis interactions), and Ig3 domains mediate interactions between NCAM molecules expressed on the surface of opposing cells (trans interactions) through binding to the Ig1 and Ig2 domains. The adhesive ability of NCAM is modulated by the addition of polysialic acid chains to the fifth Ig-like domain.


Pssm-ID: 143207 [Multi-domain]  Cd Length: 95  Bit Score: 55.32  E-value: 7.45e-10
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 249 PPTIT--ESKSNE-ATTGRQASLKCEASAVPAPDFEWYRDDTRINSANGlEIKSTEGQSSLTVTNVTEEHYGNYTCVAAN 325
Cdd:cd05730     1 PPTIRarQSEVNAtANLGQSVTLACDADGFPEPTMTWTKDGEPIESGEE-KYSFNEDGSEMTILDVDKLDEAEYTCIAEN 79
                          90
                  ....*....|.
gi 1720387172 326 KLGVTNASLVL 336
Cdd:cd05730    80 KAGEQEAEIHL 90
IG_like smart00410
Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG.
169-246 1.15e-09

Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG.


Pssm-ID: 214653 [Multi-domain]  Cd Length: 85  Bit Score: 54.43  E-value: 1.15e-09
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172  169 SSDVTVNEGSNVTLVCMANGRPEPVITWRH-----LTPLGREFEGEEEYLEIL---GITREQSGKYECKAANEVSSADvK 240
Cdd:smart00410   1 PPSVTVKEGESVTLSCEASGSPPPEVTWYKqggklLAESGRFSVSRSGSTSTLtisNVTPEDSGTYTCAATNSSGSAS-S 79

                   ....*.
gi 1720387172  241 QVKVTV 246
Cdd:smart00410  80 GTTLTV 85
IgI_1_MuSK cd20970
agrin-responsive first immunoglobulin-like domains (Ig1) of the MuSK ectodomain; a member of ...
250-328 1.43e-09

agrin-responsive first immunoglobulin-like domains (Ig1) of the MuSK ectodomain; a member of the I-set of IgSF domains; The members here are composed of the first immunoglobulin-like domains (Ig1) of the Muscle-specific kinase (MuSK). MuSK is a receptor tyrosine kinase specifically expressed in skeletal muscle, where it plays a central role in the formation and maintenance of the neuromuscular junction (NMJ). MuSK is activated by agrin, a neuron-derived heparan sulfate proteoglycan. The activation of MUSK in myotubes regulates the formation of NMJs through the regulation of different processes including the specific expression of genes in subsynaptic nuclei, the reorganization of the actin cytoskeleton and the clustering of the acetylcholine receptors (AChR) in the postsynaptic membrane. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Unlike the V-set, one of the distinctive features of I-set domains is the lack of a C" strand. The structure of the MuSK lacks this strand and thus it belongs to the I-set of the IgSF. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis.


Pssm-ID: 409562 [Multi-domain]  Cd Length: 92  Bit Score: 54.44  E-value: 1.43e-09
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 250 PTITESKSNEATT---GRQASLKCEASAVPAPDFEWYRDDTRINSANGLEIKSTEGQsSLTVTNVTEEHYGNYTCVAANK 326
Cdd:cd20970     1 PVISTPQPSFTVTareGENATFMCRAEGSPEPEISWTRNGNLIIEFNTRYIVRENGT-TLTIRNIRRSDMGIYLCIASNG 79

                  ..
gi 1720387172 327 LG 328
Cdd:cd20970    80 VP 81
IgI_NCAM-2 cd05870
Immunoglobulin (Ig)-like I-set domain of Neural Cell Adhesion Molecule 2 (NCAM-2); The members ...
250-336 3.60e-09

Immunoglobulin (Ig)-like I-set domain of Neural Cell Adhesion Molecule 2 (NCAM-2); The members here are composed of the fourth Ig domain of Neural Cell Adhesion Molecule NCAM-2 (also known as OCAM/mamFas II and RNCAM). NCAM-2 is organized similarly to NCAM, including five N-terminal Ig-like domains and two fibronectin type III domains. NCAM-2 is differentially expressed in the developing and mature olfactory epithelium (OE), and may function like NCAM, as an adhesion molecule. One of the unique features of I-set domains is the lack of a C" strand. The structures of this group show that the Ig domain lacks this strand and thus is a member of the I-set of Ig domains.


Pssm-ID: 143278 [Multi-domain]  Cd Length: 98  Bit Score: 53.44  E-value: 3.60e-09
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 250 PTITESKSNEATTGRQASLKCEASAVPAPDFEWYRDDTRINSANG-------LEIKSTEGQSSLTVTNVTEEHYGNYTCV 322
Cdd:cd05870     3 PHIIQLKNETTVENGAATLSCKAEGEPIPEITWKRASDGHTFSEGdkspdgrIEVKGQHGESSLHIKDVKLSDSGRYDCE 82
                          90
                  ....*....|....
gi 1720387172 323 AANKLGVTNASLVL 336
Cdd:cd05870    83 AASRIGGHQKSMYL 96
IgI_2_FGFRL1-like cd05856
Second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor_like-1 ...
263-333 3.61e-09

Second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor_like-1(FGFRL1); member of the I-set of IgSF domains; The members here are composed of the second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor like-1(FGFRL1). FGFRL1 is comprised of a signal peptide, three extracellular Ig-like modules, a transmembrane segment, and a short intracellular domain. FGFRL1 is expressed preferentially in skeletal tissues. Similar to FGF receptors, the expressed protein interacts specifically with heparin and with FGF2. FGFRL1 does not have a protein tyrosine kinase domain at its C-terminus; neither does its cytoplasmic domain appear to interact with a signaling partner. It has been suggested that FGFRL1 may not have any direct signaling function, but instead acts as a decoy receptor trapping FGFs and preventing them from binding other receptors.


Pssm-ID: 409442  Cd Length: 92  Bit Score: 53.33  E-value: 3.61e-09
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1720387172 263 GRQASLKCEASAVPAPDFEWYRDDTRINSANglEIKSTEGQSSLTVTNVTEEHYGNYTCVAANKLGVTNAS 333
Cdd:cd05856    19 GSSVRLKCVASGNPRPDITWLKDNKPLTPPE--IGENKKKKWTLSLKNLKPEDSGKYTCHVSNRAGEINAT 87
IG_like smart00410
Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG.
71-159 3.64e-09

Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG.


Pssm-ID: 214653 [Multi-domain]  Cd Length: 85  Bit Score: 53.28  E-value: 3.64e-09
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172   71 NITVRQGDTAILRCVVE-DKNSKVAWLNRSGIIFAGHDKWSLDprvelekRHALEYSLRIQKVDVYDEGSYTCSVQTQHE 149
Cdd:smart00410   3 SVTVKEGESVTLSCEASgSPPPEVTWYKQGGKLLAESGRFSVS-------RSGSTSTLTISNVTPEDSGTYTCAATNSSG 75
                           90
                   ....*....|
gi 1720387172  150 PKTSQVYLIV 159
Cdd:smart00410  76 SASSGTTLTV 85
IgI_L1-CAM_like cd05733
Immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM) and similar proteins; ...
250-328 4.12e-09

Immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM) and similar proteins; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the first immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM). L1 belongs to the L1 subfamily of cell adhesion molecules (CAMs) and is comprised of an extracellular region having six Ig-like domains and five fibronectin type III domains, a transmembrane region and an intracellular domain. L1 is primarily expressed in the nervous system and is involved in its development and function. L1 is associated with an X-linked recessive disorder, X-linked hydrocephalus, MASA syndrome, or spastic paraplegia type 1, that involves abnormalities of axonal growth. This group also contains NrCAM [Ng(neuronglia)CAM-related cell adhesion molecule], which is primarily expressed in the nervous system, and human neurofascin. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lacks a C" strand.


Pssm-ID: 409396 [Multi-domain]  Cd Length: 94  Bit Score: 53.18  E-value: 4.12e-09
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 250 PTITE-SKSNEATTGRQ-ASLKCEASAVPAPDFEWYRDDTRINSANGLEIKSTEGQSSLTVTN---VTEEHYGNYTCVAA 324
Cdd:cd05733     1 PTITEqSPKDYIVDPRDnITIKCEAKGNPQPTFRWTKDGKFFDPAKDPRVSMRRRSGTLVIDNhngGPEDYQGEYQCYAS 80

                  ....
gi 1720387172 325 NKLG 328
Cdd:cd05733    81 NELG 84
Ig_2 pfam13895
Immunoglobulin domain; This domain contains immunoglobulin-like domains.
250-329 4.45e-09

Immunoglobulin domain; This domain contains immunoglobulin-like domains.


Pssm-ID: 464026 [Multi-domain]  Cd Length: 79  Bit Score: 52.78  E-value: 4.45e-09
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 250 PTITESKSNeATTGRQASLKCEASAVPAPDFEWYRDDTRINSangleikstegQSSLTVTNVTEEHYGNYTCVAANKLGV 329
Cdd:pfam13895   2 PVLTPSPTV-VTEGEPVTLTCSAPGNPPPSYTWYKDGSAISS-----------SPNFFTLSVSAEDSGTYTCVARNGRGG 69
Ig_Pro_neuregulin-1 cd05895
Immunoglobulin (Ig)-like domain found in neuregulin (NRG)-1; The members here are composed of ...
250-333 1.49e-08

Immunoglobulin (Ig)-like domain found in neuregulin (NRG)-1; The members here are composed of the immunoglobulin (Ig)-like domain found in neuregulin (NRG)-1. There are many NRG-1 isoforms which arise from the alternative splicing of mRNA. NRG-1 belongs to the neuregulin gene family which is comprised of four genes. This group represents NRG-1. NRGs are signaling molecules which participate in cell-cell interactions in the nervous system, breast, and heart, and other organ systems, and are implicated in the pathology of diseases including schizophrenia, multiple sclerosis, and breast cancer. The NRG-1 protein binds to and activates the tyrosine kinases receptors ErbB3 and ErbB4, initiating signaling cascades. NRG-1 has multiple functions, for example, in the brain it regulates various processes such as radial glia formation and neuronal migration, dendritic development, and expression of neurotransmitters receptors in the peripheral nervous system NRG-1 regulates processes such as target cell differentiation, and Schwann cell survival.


Pssm-ID: 409476  Cd Length: 93  Bit Score: 51.53  E-value: 1.49e-08
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 250 PTITESKSNEATTGRQASLKCEA-SAVPAPDFEWYRDDTRINSAN---GLEIKSTEGQSSLTVTNVTEEHYGNYTCVAAN 325
Cdd:cd05895     1 PKLKEMKSQEVAAGSKLVLRCETsSEYPSLRFKWFKNGKEINRKNkpeNIKIQKKKKKSELRINKASLADSGEYMCKVSS 80

                  ....*...
gi 1720387172 326 KLGVTNAS 333
Cdd:cd05895    81 KLGNDSAS 88
IgI_3_Contactin-1 cd05851
Third immunoglobulin (Ig) domain of contactin-1; member of the I-set of Ig superfamily (IgSF) ...
162-246 1.62e-08

Third immunoglobulin (Ig) domain of contactin-1; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the third immunoglobulin (Ig) domain of the neural cell adhesion molecule contactin-1. Contactins are comprised of six Ig domains followed by four fibronectin type III (FnIII) domains anchored to the membrane by glycosylphosphatidylinositol. Contactin-1 is differentially expressed in tumor tissues and may through a RhoA mechanism, facilitate invasion and metastasis of human lung adenocarcinoma. This group belongs to the I-set of IgSF domains.


Pssm-ID: 143259  Cd Length: 88  Bit Score: 51.56  E-value: 1.62e-08
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 162 PPKISNISSDVTVNEGSNVTLVCMANGRPEPVITWRHL---TPLGREFEGEEEYLEILGITREQSGKYECKAANeVSSAD 238
Cdd:cd05851     1 PADINVKFKDTYALKGQNVTLECFALGNPVPVIRWRKIlepMPATAEISMSGAVLKIFNIQPEDEGTYECEAEN-IKGKD 79

                  ....*...
gi 1720387172 239 VKQVKVTV 246
Cdd:cd05851    80 KHQARVYV 87
IgV_1_Necl-1 cd05882
First (N-terminal) immunoglobulin (Ig)-like domain of nectin-like molecule-1 (Necl-1); member ...
69-146 3.26e-08

First (N-terminal) immunoglobulin (Ig)-like domain of nectin-like molecule-1 (Necl-1); member of the V-set of Ig superfamily (IgSF) domains; The members here are composed of the N-terminal immunoglobulin (Ig)-like domain of nectin-like molecule-1, Necl-1 (also known as celll adhesion molecule 3 (CADM3), SynCAM2, or IGSF4). Nectin-like molecules have similar domain structures to those of nectins. At least five nectin-like molecules have been identified (Necl-1 - Necl-5). They all have an extracellular region containing three Ig-like domains, a transmembrane region, and a cytoplasmic region. The N-terminal Ig-like domain of the extracellular region belongs to the V-type subfamily of Ig domains, is essential to cell-cell adhesion, and plays a part in the interaction with the envelope glycoprotein D of various viruses. Necl-1 has Ca(2+)-independent homophilic and heterophilic cell-cell adhesion activity. Necl-1 is specifically expressed in neural tissue and is important to the formation of synapses, axon bundles, and myelinated axons.


Pssm-ID: 143290  Cd Length: 95  Bit Score: 50.82  E-value: 3.26e-08
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172  69 TDNITVRQGDTAILRCVVEDK-NSKVAWLNRSG-IIFAGHDKWSLDPRVELEKRHALEYSLRIQKVDVYDEGSYTCSVQT 146
Cdd:cd05882     4 TQDETVAVGGTVTLKCGVKEHdNSSLQWSNTAQqTLYFGEKRALRDNRIQLVKSTPTELIISISNVQLSDEGEYTCSIFT 83
IgI_2_Follistatin_like cd05736
Second immunoglobulin (Ig)-like domain of a Follistatin-related protein 5, and similar domains; ...
263-336 6.96e-08

Second immunoglobulin (Ig)-like domain of a Follistatin-related protein 5, and similar domains; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the second immunoglobulin (Ig)-like domain found in human Follistatin-related protein 5 (FSTL5) and a follistatin-like molecule encoded by the CNS-related Mahya gene. Mahya genes have been retained in certain Bilaterian branches during evolution. They are conserved in Hymenoptera and Deuterostomes, but are absent from other metazoan species such as fruit fly and nematode. Mahya proteins are secretory, with a follistatin-like domain (Kazal-type serine/threonine protease inhibitor domain and EF-hand calcium-binding domain), two Ig-like domains, and a novel C-terminal domain. Mahya may be involved in learning and memory and in processing of sensory information in Hymenoptera and vertebrates. Follistatin is a secreted, multidomain protein that binds activins with high affinity and antagonizes their signaling.


Pssm-ID: 409399 [Multi-domain]  Cd Length: 93  Bit Score: 49.95  E-value: 6.96e-08
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 1720387172 263 GRQASLKCEASAVPAPDFEWYRDDTRINSANGLEIKSTEGQSSLTVTNVTEEHYGNYTCVAANKLGVTN--ASLVL 336
Cdd:cd05736    15 GVEASLRCHAEGIPLPRVQWLKNGMDINPKLSKQLTLIANGSELHISNVRYEDTGAYTCIAKNEGGVDEdiSSLFV 90
IgI_Titin_like cd05747
Immunoglobulin (Ig)-like domain of human titin C terminus and similar proteins; member of the ...
249-336 2.03e-07

Immunoglobulin (Ig)-like domain of human titin C terminus and similar proteins; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the fifth immunoglobulin (Ig)-like domain from the C-terminus of human titin x and similar proteins. Titin (also called connectin) is a fibrous sarcomeric protein specifically found in vertebrate striated muscle. Titin is gigantic; depending on isoform composition it ranges from 2970 to 3700 kDa, and is of a length that spans half a sarcomere. Titin largely consists of multiple repeats of Ig-like and fibronectin type 3 (FN-III)-like domains. Titin connects the ends of myosin thick filaments to Z disks and extends along the thick filament to the H zone and appears to function similar to an elastic band, keeping the myosin filaments centered in the sarcomere during muscle contraction or stretching. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 143224 [Multi-domain]  Cd Length: 92  Bit Score: 48.51  E-value: 2.03e-07
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 249 PPTI-TESKSNEATTGRQASLKCEASAVPAPDFEWYRDDTRINSANGLEIKSTEGQSSLTVTNVTEEHYGNYTCVAANKL 327
Cdd:cd05747     3 PATIlTKPRSLTVSEGESARFSCDVDGEPAPTVTWMREGQIIVSSQRHQITSTEYKSTFEISKVQMSDEGNYTVVVENSE 82

                  ....*....
gi 1720387172 328 GVTNASLVL 336
Cdd:cd05747    83 GKQEAQFTL 91
IgI_VEGFR-3 cd05863
Immunoglobulin (Ig)-like domain of vascular endothelial growth factor receptor 3 (VEGFR-3); ...
259-327 2.27e-07

Immunoglobulin (Ig)-like domain of vascular endothelial growth factor receptor 3 (VEGFR-3); member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the immunoglobulin (Ig)-like domain of vascular endothelial growth factor receptor 3 (VEGFR-3). The VEGFRs have an extracellular component with seven Ig-like domains, a transmembrane segment, and an intracellular tyrosine kinase domain interrupted by a kinase-insert domain. VEGFRs bind VEGFs with high affinity at the Ig-like domains. VEGFR-3 (Flt-4) binds two members of the VEGF family (VEGF-C and VEGF-D) and is involved in tumor angiogenesis and growth. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409449  Cd Length: 88  Bit Score: 48.01  E-value: 2.27e-07
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 259 EATTGRQA-SLKCEASAVPAPDFEWYRddtrinsaNGLEIKSTEGQSSLTVTNVTEEHYGNYTCVAANKL 327
Cdd:cd05863    14 EATAGDELvKLPVKVAAYPPPEFQWYK--------DGKLISGKHSPHSLQIKDVTEASAGTYTLVLWNSA 75
IgI_2_Palladin_C cd20990
Second C-terminal immunoglobulin (Ig)-like domain of palladin; member of the I-set of Ig ...
263-336 2.64e-07

Second C-terminal immunoglobulin (Ig)-like domain of palladin; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the C-terminal immunoglobulin (Ig)-like domain of palladin. Palladin belongs to the palladin-myotilin-myopalladin family. Proteins belonging to this family contain multiple Ig-like domains and function as scaffolds, modulating actin cytoskeleton. Palladin binds to alpha-actinin ezrin, vasodilator-stimulated phosphoprotein VASP, SPIN90 (also known as DIP or mDia interacting protein), and Src. Palladin also binds F-actin directly, via its Ig3 domain. Palladin is expressed as several alternatively spliced isoforms, having various combinations of Ig-like domains, in a cell-type-specific manner. It has been suggested that palladin's different Ig-like domains may be specialized for distinct functions. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409582  Cd Length: 91  Bit Score: 48.17  E-value: 2.64e-07
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 1720387172 263 GRQASLKCEASAVPAPDFEWYRDD--TRINSANGLEIKSTeGQSSLTVTNVTEEHYGNYTCVAANKLGVTNASLVL 336
Cdd:cd20990    15 GKLCRMDCKVSGLPTPDLSWQLDGkpIRPDSAHKMLVREN-GVHSLIIEPVTSRDAGIYTCIATNRAGQNSFNLEL 89
IgI_4_hemolin-like cd20978
Fourth immunoglobulin (Ig)-like domain of hemolin, and similar domains; a member of the I-set ...
162-233 3.13e-07

Fourth immunoglobulin (Ig)-like domain of hemolin, and similar domains; a member of the I-set of IgSF domains; The members here are composed of the fourth immunoglobulin (Ig)-like domain of hemolin and similar proteins. Hemolin, an insect immunoglobulin superfamily (IgSF) member containing four Ig-like domains, is a lipopolysaccharide-binding immune protein induced during bacterial infection. Hemolin shares significant sequence similarity with the first four Ig-like domains of the transmembrane cell adhesion molecules (CAMs) of the L1 family. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. The fourth Ig-like domain of hemolin is a member of the I-set Ig domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set domains, members of the I-set have a discontinuous A strand but lack a C" strand. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis.


Pssm-ID: 409570 [Multi-domain]  Cd Length: 88  Bit Score: 47.77  E-value: 3.13e-07
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 1720387172 162 PPKISNISSDVTVNEGSNVTLVCMANGRPEPVITW----RHLTPLGREFEGEEEYLEILGITREQSGKYECKAANE 233
Cdd:cd20978     1 PKFIQKPEKNVVVKGGQDVTLPCQVTGVPQPKITWlhngKPLQGPMERATVEDGTLTIINVQPEDTGYYGCVATNE 76
IgI_4_MYLK-like cd20976
Fourth Ig-like domain from smooth muscle myosin light chain kinase and similar domains ; a ...
162-246 3.98e-07

Fourth Ig-like domain from smooth muscle myosin light chain kinase and similar domains ; a member of the I-set of IgSF domains; The members here are composed of the fourth immunoglobulin (Ig)-like domain from smooth muscle myosin light chain kinase (MYLK) and similar domains. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Unlike the V-set, one of the distinctive features of I-set domains is the lack of a C" strand. The structure of this group shows that the fourth Ig-like domain from myosin light chain kinase lacks this strand and thus belongs to the I-set of the IgSF. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis.


Pssm-ID: 409568 [Multi-domain]  Cd Length: 90  Bit Score: 47.63  E-value: 3.98e-07
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 162 PPKISNISSDVTVNEGSNVTLVCMANGRPEPVITW-RHLTPLGREFEGEEEYLE-----ILGITREQSGKYECKAANEVS 235
Cdd:cd20976     1 APSFSSVPKDLEAVEGQDFVAQCSARGKPVPRITWiRNAQPLQYAADRSTCEAGvgelhIQDVLPEDHGTYTCLAKNAAG 80
                          90
                  ....*....|.
gi 1720387172 236 SADVKqVKVTV 246
Cdd:cd20976    81 QVSCS-AWVTV 90
IgI_4_Dscam cd20956
Fourth immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar domains; ...
249-328 4.31e-07

Fourth immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar domains; a member of the I-set of IgSF domains; The members here are composed of the fourth immunoglobulin domain of the Drosophila melanogaster Down syndrome cell adhesion molecule (DSCAM) protein and similar proteins. Down syndrome cell adhesion molecule (DSCAM) is a cell adhesion molecule that plays critical roles in neural development, including axon guidance and branching, axon target recognition, self-avoidance and synaptic formation. DSCAM belongs to the immunoglobulin superfamily and contributes to defects in the central nervous system in Down syndrome patients. Vertebrate DSCAMs differ from Drosophila Dscam1 in that they lack the extensive alternative splicing that occurs in the insect gene. Drosophila melanogaster Dscam has 38,016 isoforms generated by the alternative splicing of four variable exon clusters, which allows every neuron in the fly to display a distinctive set of Dscam proteins on its cell surface. Drosophila Dscam1 is a cell-surface protein that plays important roles in neural development and axon tiling of neurons. It is shown that thousands of isoforms bind themselves through specific homophilic (self-binding) interactions, a process which mediates cellular self-recognition. Drosophila Dscam2 is also alternatively spliced and plays a key role in the development of two visual system neurons, monopolar cells L1 and L2. This group is a member of the I-set Ig domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand but lack a C" strand.


Pssm-ID: 409548 [Multi-domain]  Cd Length: 96  Bit Score: 47.55  E-value: 4.31e-07
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 249 PPTITESKSNEATT-GRQASLKCEASAVPAPDFEWYRDDTRINSANGLEIK---STEGQ--SSLTVTNVTEEHYGNYTCV 322
Cdd:cd20956     1 APVLLETFSEQTLQpGPSVSLKCVASGNPLPQITWTLDGFPIPESPRFRVGdyvTSDGDvvSYVNISSVRVEDGGEYTCT 80

                  ....*.
gi 1720387172 323 AANKLG 328
Cdd:cd20956    81 ATNDVG 86
IgI_8_hMLCK_like cd05762
Eighth immunoglobulin (Ig)-like domain of human myosin light-chain kinase (MLCK) and similar ...
249-336 5.92e-07

Eighth immunoglobulin (Ig)-like domain of human myosin light-chain kinase (MLCK) and similar protein; member of the I-set of IgSF domains; The members here are composed of the eighth immunoglobulin (Ig)-like domain of human myosin light-chain kinase (MLCK) and similar proteins. Myosin light-chain kinase (MLCK) is a key regulator of different forms of cell motility involving actin and myosin II. Agonist stimulation of smooth muscle cells increases cytosolic Ca2+ which binds calmodulin. This Ca2+-calmodulin complex in turn binds to and activates MLCK. Activated MLCK leads to the phosphorylation of the 20 kDa myosin regulatory light chain (RLC) of myosin II and the stimulation of actin-activated myosin MgATPase activity. MLCK is widely present in vertebrate tissues; it phosphorylates the 20 kDa RLC of both smooth and nonmuscle myosin II. Phosphorylation leads to the activation of the myosin motor domain and altered structural properties of myosin II. In smooth muscle MLCK it is involved in initiating contraction. In nonmuscle cells, MLCK may participate in cell division and cell motility; it has been suggested MLCK plays a role in cardiomyocyte differentiation and contraction through regulation of nonmuscle myosin II.


Pssm-ID: 409419  Cd Length: 99  Bit Score: 47.26  E-value: 5.92e-07
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 249 PPTITE-SKSNEATTGRQASLKCEASAVPAPDFEWYRDDTRINSANGLEIKSTEGQSSLTVTNVTEEHYGNYTCVAANKL 327
Cdd:cd05762     1 PPQIIQfPEDMKVRAGESVELFCKVTGTQPITCTWMKFRKQIQEGEGIKIENTENSSKLTITEGQQEHCGCYTLEVENKL 80

                  ....*....
gi 1720387172 328 GVTNASLVL 336
Cdd:cd05762    81 GSRQAQVNL 89
IgI_2_FGFR_like cd05729
Second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor, and similar ...
268-333 5.95e-07

Second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor, and similar domains; member of the I-set of IgSF domains; The members here are composed of the second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor. FGF receptors bind FGF signaling polypeptides. FGFs participate in multiple processes such as morphogenesis, development, and angiogenesis. FGFs bind to four FGF receptor tyrosine kinases (FGFR1, FGFR2, FGFR3, FGFR4). Receptor diversity is controlled by alternative splicing producing splice variants with different ligand binding characteristics and different expression patterns. FGFRs have an extracellular region comprised of three Ig-like domains, a single transmembrane helix, and an intracellular tyrosine kinase domain. Ligand binding and specificity reside in the Ig-like domains 2 and 3, and the linker region that connects these two. FGFR activation and signaling depend on FGF-induced dimerization, a process involving cell surface heparin or heparin sulfate proteoglycans. This group also contains fibroblast growth factor (FGF) receptor like-1(FGFRL1). FGFRL1 does not have a protein tyrosine kinase domain at its C-terminus; neither does its cytoplasmic domain appear to interact with a signaling partner. It has been suggested that FGFRL1 may not have any direct signaling function, but instead acts as a decoy receptor trapping FGFs and preventing them from binding other receptors.


Pssm-ID: 409393 [Multi-domain]  Cd Length: 95  Bit Score: 47.21  E-value: 5.95e-07
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1720387172 268 LKCEASAVPAPDFEWYRDDTRINSANGLEIKSTEGQS-SLTVTNVTEEHYGNYTCVAANKLGVTNAS 333
Cdd:cd05729    24 LECGAGGNPMPNITWLKDGKEFKKEHRIGGTKVEEKGwSLIIERAIPRDKGKYTCIVENEYGSINHT 90
IgI_3_Robo cd05725
Third immunoglobulin (Ig)-like domain in Robo (roundabout) receptors; member of the I-set of ...
252-336 7.80e-07

Third immunoglobulin (Ig)-like domain in Robo (roundabout) receptors; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the third immunoglobulin (Ig)-like domain in Robo (roundabout) receptors. Robo receptors play a role in the development of the central nervous system (CNS), and are receptors of Slit protein. Slit is a repellant secreted by the neural cells in the midline. Slit acts through Robo to prevent most neurons from crossing the midline from either side. Three mammalian Robo homologs (Robo1, Robo2, Robo3), and three mammalian Slit homologs (Slit-1,Slit-2, Slit-3), have been identified. Commissural axons, which cross the midline, express low levels of Robo; longitudinal axons, which avoid the midline, express high levels of Robo. Robo1, Robo2, and Robo3 are expressed by commissural neurons in the vertebrate spinal cord and Slit-1, Slit-2, and Slit-3 are expressed at the ventral midline. Robo-3 is a divergent member of the Robo family which instead of being a positive regulator of Slit responsiveness, antagonizes Slit responsiveness in precrossing axons. The Slit-Robo interaction is mediated by the second leucine-rich repeat (LRR) domain of Slit and the two N-terminal Ig domains of Robo, Ig1 and Ig2. The primary Robo binding site for Slit2 has been shown by surface plasmon resonance experiments and mutational analysis to be the Ig1 domain, while the Ig2 domain has been proposed to harbor a weak secondary binding site. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409390 [Multi-domain]  Cd Length: 83  Bit Score: 46.62  E-value: 7.80e-07
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 252 ITESKSNEATTGRQASLKCEASAVPAPDFEWYRDDTR--INSANGLEIKStegqssLTVTNVTEEHYGNYTCVAANKLGV 329
Cdd:cd05725     1 VKRPQNQVVLVDDSAEFQCEVGGDPVPTVRWRKEDGElpKGRYEILDDHS------LKIRKVTAGDMGSYTCVAENMVGK 74

                  ....*..
gi 1720387172 330 TNASLVL 336
Cdd:cd05725    75 IEASATL 81
Ig3_L1-CAM_like cd05731
Third immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM), and similar ...
268-328 1.04e-06

Third immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM), and similar domains; The members here are composed of the third immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM). L1 belongs to the L1 subfamily of cell adhesion molecules (CAMs) and is comprised of an extracellular region having six Ig-like domains and five fibronectin type III domains, a transmembrane region and an intracellular domain. L1 is primarily expressed in the nervous system and is involved in its development and function. L1 is associated with an X-linked recessive disorder, X-linked hydrocephalus, MASA syndrome, and spastic paraplegia type 1, that involves abnormalities of axonal growth. This group also contains the chicken neuron-glia cell adhesion molecule, Ng-CAM and human neurofascin.


Pssm-ID: 409394 [Multi-domain]  Cd Length: 83  Bit Score: 46.25  E-value: 1.04e-06
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 1720387172 268 LKCEASAVPAPDFEWYRddtrinsANGLEIKSTEG----QSSLTVTNVTEEHYGNYTCVAANKLG 328
Cdd:cd05731    15 LECIAEGLPTPDIRWIK-------LGGELPKGRTKfenfNKTLKIENVSEADSGEYQCTASNTMG 72
Ig4_L1-NrCAM_like cd04978
Fourth immunoglobulin (Ig)-like domain of L1, Ng-CAM (Neuron-glia CAM cell adhesion molecule), ...
170-233 1.12e-06

Fourth immunoglobulin (Ig)-like domain of L1, Ng-CAM (Neuron-glia CAM cell adhesion molecule), and NrCAM (Ng-CAM-related); The members here are composed of the fourth immunoglobulin (Ig)-like domain of L1, Ng-CAM (Neuron-glia CAM cell adhesion molecule), and NrCAM (Ng-CAM-related). These proteins belong to the L1 subfamily of cell adhesion molecules (CAMs) and are comprised of an extracellular region having six Ig-like domains and five fibronectin type III domains, a transmembrane region and an intracellular domain. These molecules are primarily expressed in the nervous system. L1 is associated with an X-linked recessive disorder, X-linked hydrocephalus, MASA syndrome, or spastic paraplegia type 1, that involves abnormalities of axonal growth.


Pssm-ID: 409367 [Multi-domain]  Cd Length: 89  Bit Score: 46.29  E-value: 1.12e-06
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 170 SDVTVNEGSNVTLVCMANGRPEPVITWR------HLTPLGREFEGEEEYLEILGITREQSGKYECKAANE 233
Cdd:cd04978     7 PSLVLSPGETGELICEAEGNPQPTITWRlngvpiEPAPEDMRRTVDGRTLIFSNLQPNDTAVYQCNASNV 76
IgI_SALM5_like cd05764
Immunoglobulin domain of human Synaptic Adhesion-Like Molecule 5 (SALM5) and similar proteins; ...
263-336 1.18e-06

Immunoglobulin domain of human Synaptic Adhesion-Like Molecule 5 (SALM5) and similar proteins; member of the I-set of IgSF domains; This group contains the immunoglobulin domain of human Synaptic Adhesion-Like Molecule 5 (SALM5) and similar proteins. The SALM (for synaptic adhesion-like molecules; also known as Lrfn for leucine-rich repeat and fibronectin type III domain containing) family of adhesion molecules consists of five known members: SALM1/Lrfn2, SALM2/Lrfn1, SALM3/Lrfn4, SALM4/Lrfn3, and SALM5/Lrfn5. SALMs share a similar domain structure, containing leucine-rich repeats (LRRs), an immunoglobulin (Ig) domain, and a fibronectin III (FNIII) domain, followed by a transmembrane domain and a C-terminal PDZ-binding motif. SALM5 is implicated in autism spectrum disorders (ASDs) and schizophrenia, induces presynaptic differentiation in contacting axons. SALM5 interacts with the Ig domains of LAR (Leukocyte common Antigen-Related) family receptor protein tyrosine phosphatases (LAR-RPTPs; LAR, PTPdelta, and PTPsigma). In addition, PTPdelta is implicated in ASDs, ADHD, bipolar disorder, and restless leg syndrome. Studies have shown that LAR-RPTPs are novel and splicing-dependent presynaptic ligands for SALM5, and that they mediate SALM5-dependent presynaptic differentiation. Furthermore, SALM5 maintains AMPA receptor (AMPAR)-mediated excitatory synaptic transmission through mechanisms involving the interaction of SALM5 with LAR-RPTPs. This group belongs to the I-set of immunoglobulin superfamily (IgSF) domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand but lack a C" strand.


Pssm-ID: 409421 [Multi-domain]  Cd Length: 88  Bit Score: 46.31  E-value: 1.18e-06
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....
gi 1720387172 263 GRQASLKCEASAVPAPDFEWYRDDTRINSANGLEIKSTEGQSSLTVTNVTEehYGNYTCVAANKLGVTNASLVL 336
Cdd:cd05764    15 GQRATLRCKARGDPEPAIHWISPEGKLISNSSRTLVYDNGTLDILITTVKD--TGAFTCIASNPAGEATARVEL 86
IgI_telokin-like cd20973
immunoglobulin-like domain of telokin and similar proteins; a member of the I-set of IgSF ...
259-328 1.44e-06

immunoglobulin-like domain of telokin and similar proteins; a member of the I-set of IgSF domains; The members here are composed of the immunoglobulin (Ig) domain in telokin, the C-terminal domain of myosin light chain kinase which is identical to telokin, and similar proteins. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Unlike the V-set, one of the distinctive features of I-set domains is the lack of a C" strand. The structure of the telokin Ig domain lacks this strand and thus it belongs to the I-set of the IgSF. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis.


Pssm-ID: 409565 [Multi-domain]  Cd Length: 88  Bit Score: 46.03  E-value: 1.44e-06
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1720387172 259 EATTGRQASLKCEASAVPAPDFEWYRDDTRINSANGLEIKSTE-GQSSLTVTNVTEEHYGNYTCVAANKLG 328
Cdd:cd20973     8 EVVEGSAARFDCKVEGYPDPEVKWMKDDNPIVESRRFQIDQDEdGLCSLIISDVCGDDSGKYTCKAVNSLG 78
Ig4_Contactin-2-like cd05728
Fourth Ig domain of the neural cell adhesion molecule contactin-2, and similar domains; The ...
256-333 1.58e-06

Fourth Ig domain of the neural cell adhesion molecule contactin-2, and similar domains; The members here are composed of the fourth Ig domain of the neural cell adhesion molecule contactin-2. Contactins are comprised of six Ig domains followed by four fibronectin type III (FnIII) domains anchored to the membrane by glycosylphosphatidylinositol. Contactin-2 (also called TAG-1, axonin-1) facilitates cell adhesion by homophilic binding between molecules in apposed membranes. The first four Ig domains form the intermolecular binding fragment which arranges as a compact U-shaped module by contacts between Ig domains 1 and 4, and domains 2 and 3. It has been proposed that a linear zipper-like array forms, from contactin-2 molecules alternatively provided by the two apposed membranes.


Pssm-ID: 143205 [Multi-domain]  Cd Length: 85  Bit Score: 45.67  E-value: 1.58e-06
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 1720387172 256 KSNEATTGRQASLKCEASAVPAPDFEWYRDDTRINSANGLEIKSTEgqssLTVTNVTEEHYGNYTCVAANKLGVTNAS 333
Cdd:cd05728     7 SDTEADIGSSLRWECKASGNPRPAYRWLKNGQPLASENRIEVEAGD----LRITKLSLSDSGMYQCVAENKHGTIYAS 80
IgI_5_Robo cd20952
Fifth Ig-like domain of Roundabout (Robo) homolog 1/2, and similar domains; a member of the ...
268-336 2.06e-06

Fifth Ig-like domain of Roundabout (Robo) homolog 1/2, and similar domains; a member of the I-set of IgSF domains; The members here are composed of the fifth Ig-like domain of Roundabout (Robo) homolog 1/2 and similar domains. Robo receptors play a role in the development of the central nervous system (CNS), and are receptors of Slit protein. Slit is a repellant secreted by the neural cells in the midline. Slit acts through Robo to prevent most neurons from crossing the midline from either side. Three mammalian Robo homologs (Robo1, -2, and -3), and three mammalian Slit homologs (Slit-1,-2, -3), have been identified. Commissural axons, which cross the midline, express low levels of Robo; longitudinal axons, which avoid the midline, express high levels of Robo. Robo1, -2, and -3 are expressed by commissural neurons in the vertebrate spinal cord and Slits 1, -2, -3 are expressed at the ventral midline. Robo-3 is a divergent member of the Robo family which instead of being a positive regulator of slit responsiveness, antagonizes slit responsiveness in precrossing axons. The Slit-Robo interaction is mediated by the second leucine-rich repeat (LRR) domain of Slit and the two N-terminal Ig domains of Robo, Ig1 and Ig2. The primary Robo binding site for Slit2 has been shown by surface plasmon resonance experiments and mutational analysis to be is the Ig1 domain, while the Ig2 domain has been proposed to harbor a weak secondary binding site. The fifth Ig-like domain of Robo 1 and 2 is a member of the I-set Ig domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand but lack a C" strand. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors


Pssm-ID: 409544 [Multi-domain]  Cd Length: 87  Bit Score: 45.57  E-value: 2.06e-06
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 1720387172 268 LKCEASAVPAPDFEWYRDDTRINSANglEIKSTEGQSSLTVTNVTEEHYGNYTCVAANKLGVTNASLVL 336
Cdd:cd20952    19 LNCQATGEPVPTISWLKDGVPLLGKD--ERITTLENGSLQIKGAEKSDTGEYTCVALNLSGEATWSAVL 85
IgC_1_Robo cd07693
First immunoglobulin (Ig)-like constant domain in Robo (roundabout) receptors, and similar ...
250-334 2.65e-06

First immunoglobulin (Ig)-like constant domain in Robo (roundabout) receptors, and similar domains; The members here are composed of the first immunoglobulin (Ig)-like domain in Roundabout (Robo) receptors. Robo receptors play a role in the development of the central nervous system (CNS), and are receptors of Slit protein. Slit is a repellant secreted by the neural cells in the midline. Slit acts through Robo to prevent most neurons from crossing the midline from either side. Three mammalian Robo homologs (Robo1, Robo2, and Robo3), and three mammalian Slit homologs (Slit1, Slit2, Slit3), have been identified. Commissural axons, which cross the midline, express low levels of Robo; longitudinal axons, which avoid the midline, express high levels of Robo. Robo1, Robo2, and Robo3 are expressed by commissural neurons in the vertebrate spinal cord and Slit1, Slit2,and Slit3 are expressed at the ventral midline. Robo3 is a divergent member of the Robo family which instead of being a positive regulator of Slit responsiveness, antagonizes Slit responsiveness in precrossing axons. The Slit-Robo interaction is mediated by the second leucine-rich repeat (LRR) domain of Slit and the two N-terminal Ig domains of Robo, Ig1 and Ig2. The primary Robo binding site for Slit2 has been shown by surface plasmon resonance experiments and mutational analysis to be is the Ig1 domain, while the Ig2 domain has been proposed to harbor a weak secondary binding site.


Pssm-ID: 409490 [Multi-domain]  Cd Length: 99  Bit Score: 45.62  E-value: 2.65e-06
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 250 PTITESKSNEATT-GRQASLKCEASAVPAPDFEWYRDDTRinsangLEIKSTEGQS--------SLTVTNV-----TEEH 315
Cdd:cd07693     1 PRIVEHPSDLIVSkGDPATLNCKAEGRPTPTIQWLKNGQP------LETDKDDPRShrivlpsgSLFFLRVvhgrkGRSD 74
                          90       100
                  ....*....|....*....|..
gi 1720387172 316 YGNYTCVAANKLGVT---NASL 334
Cdd:cd07693    75 EGVYVCVAHNSLGEAvsrNASL 96
IgI_2_MuSK cd20968
agrin-responsive second immunoglobulin-like domains (Ig2) of the Muscle-specific kinase (MuSK) ...
263-335 2.72e-06

agrin-responsive second immunoglobulin-like domains (Ig2) of the Muscle-specific kinase (MuSK) ectodomain; a member of the I-set of Ig superfamily domains; The members here are composed of the second immunoglobulin-like (Ig) domains of the Muscle-specific kinase (MuSK) ectodomain. MuSK is a receptor tyrosine kinase specifically expressed in skeletal muscle, where it plays a central role in the formation and maintenance of the neuromuscular junction (NMJ). MuSK is activated by agrin, a neuron-derived heparan sulfate proteoglycan. The activation of MUSK in myotubes regulates the formation of NMJs through the regulation of different processes including the specific expression of genes in subsynaptic nuclei, the reorganization of the actin cytoskeleton and the clustering of the acetylcholine receptors (AChR) in the postsynaptic membrane. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Unlike the V-set, one of the distinctive features of I-set domains is the lack of a C" strand. The structure of the MuSK lacks this strand and thus it belongs to the I-set of the IgSF. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis.


Pssm-ID: 409560 [Multi-domain]  Cd Length: 88  Bit Score: 45.31  E-value: 2.72e-06
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|...
gi 1720387172 263 GRQASLKCEASAVPAPDFEWYRDDTRINSANGLEIKSTegqSSLTVTNVTEEHYGNYTCVAANKLGVTNASLV 335
Cdd:cd20968    14 GLKAVLPCTTMGNPKPSVSWIKGDDLIKENNRIAVLES---GSLRIHNVQKEDAGQYRCVAKNSLGIAYSKPV 83
Ig5_Contactin cd04969
Fifth immunoglobulin (Ig) domain of contactin; The members here are composed of the fifth ...
256-336 2.75e-06

Fifth immunoglobulin (Ig) domain of contactin; The members here are composed of the fifth immunoglobulin (Ig) domain of contactins. Contactins are neural cell adhesion molecules and are comprised of six Ig domains followed by four fibronectin type III (FnIII) domains anchored to the membrane by glycosylphosphatidylinositol. The first four Ig domains form the intermolecular binding fragment, which arranges as a compact U-shaped module via contacts between Ig domains 1 and 4, and between Ig domains 2 and 3. Contactin-2 (TAG-1, axonin-1) may play a part in the neuronal processes of neurite outgrowth, axon guidance and fasciculation, and neuronal migration. This group also includes contactin-1 and contactin-5. The different contactins show different expression patterns in the central nervous system. During development and in adulthood, contactin-2 is transiently expressed in subsets of central and peripheral neurons. Contactin-5 is expressed specifically in the rat postnatal nervous system, peaking at about 3 weeks postnatal, and a lack of contactin-5 (NB-2) results in an impairment of neuronal activity in the rat auditory system. Contactin-5 is highly expressed in the adult human brain in the occipital lobe and in the amygdala. Contactin-1 is differentially expressed in tumor tissues and may, through a RhoA mechanism, facilitate invasion and metastasis of human lung adenocarcinoma.


Pssm-ID: 409358 [Multi-domain]  Cd Length: 89  Bit Score: 45.14  E-value: 2.75e-06
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 256 KSNEATTGRQASLKCEASAVPAPDFEWYRDDTRINSANGLEIKStegQSSLTVTNVTEEHYGNYTCVAANKLGVTNASLV 335
Cdd:cd04969    10 KKILAAKGGDVIIECKPKASPKPTISWSKGTELLTNSSRICILP---DGSLKIKNVTKSDEGKYTCFAVNFFGKANSTGS 86

                  .
gi 1720387172 336 L 336
Cdd:cd04969    87 L 87
IgI_5_Robo cd20952
Fifth Ig-like domain of Roundabout (Robo) homolog 1/2, and similar domains; a member of the ...
169-242 2.88e-06

Fifth Ig-like domain of Roundabout (Robo) homolog 1/2, and similar domains; a member of the I-set of IgSF domains; The members here are composed of the fifth Ig-like domain of Roundabout (Robo) homolog 1/2 and similar domains. Robo receptors play a role in the development of the central nervous system (CNS), and are receptors of Slit protein. Slit is a repellant secreted by the neural cells in the midline. Slit acts through Robo to prevent most neurons from crossing the midline from either side. Three mammalian Robo homologs (Robo1, -2, and -3), and three mammalian Slit homologs (Slit-1,-2, -3), have been identified. Commissural axons, which cross the midline, express low levels of Robo; longitudinal axons, which avoid the midline, express high levels of Robo. Robo1, -2, and -3 are expressed by commissural neurons in the vertebrate spinal cord and Slits 1, -2, -3 are expressed at the ventral midline. Robo-3 is a divergent member of the Robo family which instead of being a positive regulator of slit responsiveness, antagonizes slit responsiveness in precrossing axons. The Slit-Robo interaction is mediated by the second leucine-rich repeat (LRR) domain of Slit and the two N-terminal Ig domains of Robo, Ig1 and Ig2. The primary Robo binding site for Slit2 has been shown by surface plasmon resonance experiments and mutational analysis to be is the Ig1 domain, while the Ig2 domain has been proposed to harbor a weak secondary binding site. The fifth Ig-like domain of Robo 1 and 2 is a member of the I-set Ig domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand but lack a C" strand. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors


Pssm-ID: 409544 [Multi-domain]  Cd Length: 87  Bit Score: 45.18  E-value: 2.88e-06
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 1720387172 169 SSDVTVNEGSNVTLVCMANGRPEPVITWRH-----LTPLGREFEGEEEYLEILGITREQSGKYECKAANEVSSADVKQV 242
Cdd:cd20952     6 PQNQTVAVGGTVVLNCQATGEPVPTISWLKdgvplLGKDERITTLENGSLQIKGAEKSDTGEYTCVALNLSGEATWSAV 84
IgI_6_Dscam cd20959
Sixth immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar domains; ...
249-328 2.94e-06

Sixth immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar domains; a member of the I-set of IgSF domains; The members here are composed of the sixth immunoglobulin domain of the Drosophila melanogaster Down syndrome cell adhesion molecule (DSCAM) protein and similar proteins. Down syndrome cell adhesion molecule (DSCAM) is a cell adhesion molecule that plays critical roles in neural development, including axon guidance and branching, axon target recognition, self-avoidance and synaptic formation. DSCAM belongs to the immunoglobulin superfamily and contributes to defects in the central nervous system in Down syndrome patients. Vertebrate DSCAMs differ from Drosophila Dscam1 in that they lack the extensive alternative splicing that occurs in the insect gene. Drosophila melanogaster Dscam has 38,016 isoforms generated by the alternative splicing of four variable exon clusters, which allows every neuron in the fly to display a distinctive set of Dscam proteins on its cell surface. Drosophila Dscam1 is a cell-surface protein that plays important roles in neural development and axon tiling of neurons. It is shown that thousands of isoforms bind themselves through specific homophilic (self-binding) interactions, a process which mediates cellular self-recognition. Drosophila Dscam2 is also alternatively spliced and plays a key role in the development of two visual system neurons, monopolar cells L1 and L2. This group is a member of the I-set Ig domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand but lack a C" strand.


Pssm-ID: 409551  Cd Length: 94  Bit Score: 45.18  E-value: 2.94e-06
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 249 PPTIT--ESKSNEATTGRQASLKCEASAVPAP-DFEWYRDDTRINSANGLEIKSTEGQSS-LTVTNVTEEHYGNYTCVAA 324
Cdd:cd20959     1 PPRIIpfAFGEGAAQVGMRAQLHCGVPGGDLPlNIRWTLDGQPISDDLGITVSRLGRRSSiLSIDSLEASHAGNYTCHAR 80

                  ....
gi 1720387172 325 NKLG 328
Cdd:cd20959    81 NSAG 84
Ig cd00096
Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found ...
180-242 3.23e-06

Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found in the Ig superfamily. The Ig superfamily is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. Members of this group are components of immunoglobulin, neuroglia, cell surface glycoproteins, including T-cell receptors, CD2, CD4, CD8, and membrane glycoproteins, including butyrophilin and chondroitin sulfate proteoglycan core protein. A predominant feature of most Ig domains is a disulfide bridge connecting the two beta-sheets with a tryptophan residue packed against the disulfide bond. Ig superfamily (IgSF) domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Typically, the V-set domains have A, B, E, and D strands in one sheet and A', G, F, C, C' and C" in the other. The structures in C1-set are smaller than those in the V-set; they have one beta sheet that is formed by strands A, B, E, and D and the other by strands G, F, C, and C'. Moreover, a C1-set Ig domain contains a short C' strand (three residues) and lacks A' and C" strand. Unlike other Ig domain sets, C2-set structures do not have a D strand. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409353 [Multi-domain]  Cd Length: 70  Bit Score: 44.24  E-value: 3.23e-06
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 180 VTLVCMANGRPEPVITWRH----LTPLGREFEGEEEYLEIL---GITREQSGKYECKAANEVSSADVKQV 242
Cdd:cd00096     1 VTLTCSASGNPPPTITWYKngkpLPPSSRDSRRSELGNGTLtisNVTLEDSGTYTCVASNSAGGSASASV 70
IgI_4_hemolin-like cd20978
Fourth immunoglobulin (Ig)-like domain of hemolin, and similar domains; a member of the I-set ...
263-335 3.30e-06

Fourth immunoglobulin (Ig)-like domain of hemolin, and similar domains; a member of the I-set of IgSF domains; The members here are composed of the fourth immunoglobulin (Ig)-like domain of hemolin and similar proteins. Hemolin, an insect immunoglobulin superfamily (IgSF) member containing four Ig-like domains, is a lipopolysaccharide-binding immune protein induced during bacterial infection. Hemolin shares significant sequence similarity with the first four Ig-like domains of the transmembrane cell adhesion molecules (CAMs) of the L1 family. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. The fourth Ig-like domain of hemolin is a member of the I-set Ig domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set domains, members of the I-set have a discontinuous A strand but lack a C" strand. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis.


Pssm-ID: 409570 [Multi-domain]  Cd Length: 88  Bit Score: 44.69  E-value: 3.30e-06
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 1720387172 263 GRQASLKCEASAVPAPDFEWYRDDTRINSANGleiKSTEGQSSLTVTNVTEEHYGNYTCVAANKLG--VTNASLV 335
Cdd:cd20978    16 GQDVTLPCQVTGVPQPKITWLHNGKPLQGPME---RATVEDGTLTIINVQPEDTGYYGCVATNEIGdiYTETLLH 87
IgI_3_Contactin cd04968
Third immunoglobulin (Ig) domain of contactin; member of the I-set of Ig superfamily (IgSF) ...
163-246 3.56e-06

Third immunoglobulin (Ig) domain of contactin; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the third immunoglobulin (Ig) domain of contactins. Contactins are neural cell adhesion molecules and are comprised of six Ig domains followed by four fibronectin type III (FnIII) domains anchored to the membrane by glycosylphosphatidylinositol. The first four Ig domains form the intermolecular binding fragment, which arranges as a compact U-shaped module via contacts between Ig domains 1 and 4, and between Ig domains 2 and 3. Contactin-2 (TAG-1, axonin-1) may play a part in the neuronal processes of neurite outgrowth, axon guidance and fasciculation, and neuronal migration. This group also includes contactin-1 and contactin-5. The different contactins show different expression patterns in the central nervous system. During development and in adulthood, contactin-2 is transiently expressed in subsets of central and peripheral neurons. Contactin-5 is expressed specifically in the rat postnatal nervous system, peaking at about 3 weeks postnatal, and a lack of contactin-5 (NB-2) results in an impairment of neuronal activity in the rat auditory system. Contactin-5 is highly expressed in the adult human brain in the occipital lobe and in the amygdala. Contactin-1 is differentially expressed in tumor tissues and may, through a RhoA mechanism, facilitate invasion and metastasis of human lung adenocarcinoma. This group belongs to the I-set of IgSF domains.


Pssm-ID: 409357 [Multi-domain]  Cd Length: 88  Bit Score: 44.85  E-value: 3.56e-06
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 163 PKI-SNISSDVTVNEGSNVTLVCMANGRPEPVITWRHL---TPLGREFEGEEEYLEILGITREQSGKYECKAANeVSSAD 238
Cdd:cd04968     1 PSIkVRFPADTYALKGQTVTLECFALGNPVPQIKWRKVdgsPSSQWEITTSEPVLEIPNVQFEDEGTYECEAEN-SRGKD 79

                  ....*...
gi 1720387172 239 VKQVKVTV 246
Cdd:cd04968    80 TVQGRIIV 87
Ig4_L1-NrCAM_like cd04978
Fourth immunoglobulin (Ig)-like domain of L1, Ng-CAM (Neuron-glia CAM cell adhesion molecule), ...
249-334 4.06e-06

Fourth immunoglobulin (Ig)-like domain of L1, Ng-CAM (Neuron-glia CAM cell adhesion molecule), and NrCAM (Ng-CAM-related); The members here are composed of the fourth immunoglobulin (Ig)-like domain of L1, Ng-CAM (Neuron-glia CAM cell adhesion molecule), and NrCAM (Ng-CAM-related). These proteins belong to the L1 subfamily of cell adhesion molecules (CAMs) and are comprised of an extracellular region having six Ig-like domains and five fibronectin type III domains, a transmembrane region and an intracellular domain. These molecules are primarily expressed in the nervous system. L1 is associated with an X-linked recessive disorder, X-linked hydrocephalus, MASA syndrome, or spastic paraplegia type 1, that involves abnormalities of axonal growth.


Pssm-ID: 409367 [Multi-domain]  Cd Length: 89  Bit Score: 44.75  E-value: 4.06e-06
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 249 PPTITESksneatTGRQASLKCEASAVPAPDFEWyrddtRINsANGLEIKSTEGQ-----SSLTVTNVTEEHYGNYTCVA 323
Cdd:cd04978     6 PPSLVLS------PGETGELICEAEGNPQPTITW-----RLN-GVPIEPAPEDMRrtvdgRTLIFSNLQPNDTAVYQCNA 73
                          90
                  ....*....|...
gi 1720387172 324 ANKLG--VTNASL 334
Cdd:cd04978    74 SNVHGylLANAFL 86
Ig_Perlecan_like cd05743
Immunoglobulin (Ig)-like domain of the human basement membrane heparan sulfate proteoglycan ...
263-328 5.86e-06

Immunoglobulin (Ig)-like domain of the human basement membrane heparan sulfate proteoglycan perlecan and similar proteins; The members here are composed of the immunoglobulin (Ig)-like domain of the human basement membrane heparan sulfate proteoglycan perlecan, also known as HSPG2, and similar proteins. Perlecan consists of five domains: domain I has three putative heparan sulfate attachment sites, domain II has four LDL receptor-like repeats, and one Ig-like repeat, domain III resembles the short arm of laminin chains, domain IV has multiple Ig-like repeats (21 repeats in human perlecan), and domain V resembles the globular G domain of the laminin A chain and internal repeats of EGF. Perlecan may participate in a variety of biological functions including cell binding, LDL-metabolism, basement membrane assembly and selective permeability, calcium binding, and growth- and neurite-promoting activities.


Pssm-ID: 143220  Cd Length: 78  Bit Score: 44.02  E-value: 5.86e-06
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 1720387172 263 GRQASLKCEASAVPAPDFEWYRDDTRINSANGLEIKSTEGQSSLTVTNVTEEHYGNYTCVAANKLG 328
Cdd:cd05743     1 GETVEFTCVATGVPTPIINWRLNWGHVPDSARVSITSEGGYGTLTIRDVKESDQGAYTCEAINTRG 66
Ig_2 pfam13895
Immunoglobulin domain; This domain contains immunoglobulin-like domains.
164-246 6.41e-06

Immunoglobulin domain; This domain contains immunoglobulin-like domains.


Pssm-ID: 464026 [Multi-domain]  Cd Length: 79  Bit Score: 43.92  E-value: 6.41e-06
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 164 KISNISSDVTVNEGSNVTLVCMANGRPEPVITWRHltplGREFEGEEEYLEILGITREQSGKYECKAANEVSSADVKQVK 243
Cdd:pfam13895   1 KPVLTPSPTVVTEGEPVTLTCSAPGNPPPSYTWYK----DGSAISSSPNFFTLSVSAEDSGTYTCVARNGRGGKVSNPVE 76

                  ...
gi 1720387172 244 VTV 246
Cdd:pfam13895  77 LTV 79
Ig3_L1-CAM cd05876
Third immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM); The members here ...
169-237 8.10e-06

Third immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM); The members here are composed of the third immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM). L1 belongs to the L1 subfamily of cell adhesion molecules (CAMs) and is comprised of an extracellular region having six Ig-like domains, five fibronectin type III domains, a transmembrane region and an intracellular domain. L1 is primarily expressed in the nervous system and is involved in its development and function. L1 is associated with an X-linked recessive disorder, X-linked hydrocephalus, MASA syndrome, or spastic paraplegia type 1, that involves abnormalities of axonal growth. This group also contains the chicken neuron-glia cell adhesion molecule, Ng-CAM.


Pssm-ID: 409460 [Multi-domain]  Cd Length: 83  Bit Score: 43.75  E-value: 8.10e-06
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|...
gi 1720387172 169 SSDVTVNEGSNVTLVCMANGRPEPVITWRH----LTPLGREFEGEEEYLEILGITREQSGKYECKAANEVSSA 237
Cdd:cd05876     2 SSSLVALRGQSLVLECIAEGLPTPTVKWLRpsgpLPPDRVKYQNHNKTLQLLNVGESDDGEYVCLAENSLGSA 74
IgI_titin_I1-like cd20951
Immunoglobulin domain I1 of the titin I-band and similar proteins; a member of the I-set of ...
263-335 8.77e-06

Immunoglobulin domain I1 of the titin I-band and similar proteins; a member of the I-set of IgSF domains; The members here are composed of the immunoglobulin domain I1 of the titin I-band and similar proteins. Titin is a key component in the assembly and functioning of vertebrate striated muscles. By providing connections at the level of individual microfilaments, it contributes to the fine balance of forces between the two halves of the sarcomere. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. The two sheets are linked together by a conserved disulfide bond between B strand and F strand. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. The Ig I1 domain of the titin I-band is a member of the I-set Ig domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand but lack a C" strand. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis.


Pssm-ID: 409543 [Multi-domain]  Cd Length: 94  Bit Score: 43.95  E-value: 8.77e-06
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 1720387172 263 GRQASLKCEASAVPAPDFEWYRDDTRINSANG---LEIKSTEGQSSLTVTNVTEEHYGNYTCVAANKLGV--TNASLV 335
Cdd:cd20951    15 KSDAKLRVEVQGKPDPEVKWYKNGVPIDPSSIpgkYKIESEYGVHVLHIRRVTVEDSAVYSAVAKNIHGEasSSASVV 92
IgI_NCAM-1_like cd05732
Immunoglobulin (Ig)-like I-set domain of Neural Cell Adhesion Molecule 1 (NCAM-1) and similar ...
161-234 1.04e-05

Immunoglobulin (Ig)-like I-set domain of Neural Cell Adhesion Molecule 1 (NCAM-1) and similar proteins; The members here are composed of the fourth immunoglobulin (Ig)-like domain of Neural Cell Adhesion Molecule (NCAM-1). NCAM plays important roles in the development and regeneration of the central nervous system, in synaptogenesis and neural migration. NCAM mediates cell-cell and cell-substratum recognition and adhesion via homophilic (NCAM-NCAM), and heterophilic (NCAM-non-NCAM), interactions. NCAM is expressed as three major isoforms having different intracellular extensions. The extracellular portion of NCAM has five N-terminal Ig-like domains and two fibronectin type III domains. The double zipper adhesion complex model for NCAM homophilic binding involves Ig1, Ig2, and Ig3. By this model, Ig1 and Ig2 mediate dimerization of NCAM molecules situated on the same cell surface (cis interactions), and Ig3 domains mediate interactions between NCAM molecules expressed on the surface of opposing cells (trans interactions), through binding to the Ig1 and Ig2 domains. The adhesive ability of NCAM is modulated by the addition of polysialic acid chains to the fifth Ig-like domain. Also included in this group is NCAM-2 (also known as OCAM/mamFas II and RNCAM) NCAM-2 is differentially expressed in the developing and mature olfactory epithelium (OE). One of the unique features of I-set domains is the lack of a C" strand. The structures of this group show that the Ig domain lacks this strand and thus is a member of the I-set of Ig domains.


Pssm-ID: 409395 [Multi-domain]  Cd Length: 96  Bit Score: 43.67  E-value: 1.04e-05
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 161 VPPKISNISsDVTVNEGSNVTLVCMANGRPEPVITWRHLT---------PLGREFEGEEEYLEILGITREQ---SGKYEC 228
Cdd:cd05732     1 VQPKITYLE-NQTAVELEQITLTCEAEGDPIPEITWRRATrgisfeegdLDGRIVVRGHARVSSLTLKDVQltdAGRYDC 79

                  ....*.
gi 1720387172 229 KAANEV 234
Cdd:cd05732    80 EASNRI 85
IgI_1_Contactin-5 cd05848
First immunoglobulin (Ig) domain of contactin-5; member of the I-set of Ig superfamily domains; ...
264-329 1.06e-05

First immunoglobulin (Ig) domain of contactin-5; member of the I-set of Ig superfamily domains; The members here are composed of the first immunoglobulin (Ig) domain of the neural cell adhesion molecule contactin-5. Contactins are comprised of six Ig domains followed by four fibronectin type III (FnIII) domains, anchored to the membrane by glycosylphosphatidylinositol. The different contactins show different expression patterns in the central nervous system. In rats, a lack of contactin-5 (NB-2) results in an impairment of the neuronal activity in the auditory system. Contactin-5 is expressed specifically in the postnatal nervous system, peaking at about 3 weeks postnatal. Contactin-5 is highly expressed in the adult human brain in the occipital lobe and in the amygdala; lower levels of expression have been detected in the corpus callosum, caudate nucleus, and spinal cord. This group belongs to the I-set of IgSF domains.


Pssm-ID: 409435  Cd Length: 96  Bit Score: 43.78  E-value: 1.06e-05
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1720387172 264 RQASLKCEASAVPAPDFEWYRDDTRINSANGLEIKSTEGqsSLTVTNVTE-EHYGNYTCVAANKLGV 329
Cdd:cd05848    20 KKVILNCEARGNPVPTYRWLRNGTEIDTESDYRYSLIDG--NLIISNPSEvKDSGRYQCLATNSIGS 84
IgI_NCAM-2 cd05870
Immunoglobulin (Ig)-like I-set domain of Neural Cell Adhesion Molecule 2 (NCAM-2); The members ...
161-234 1.12e-05

Immunoglobulin (Ig)-like I-set domain of Neural Cell Adhesion Molecule 2 (NCAM-2); The members here are composed of the fourth Ig domain of Neural Cell Adhesion Molecule NCAM-2 (also known as OCAM/mamFas II and RNCAM). NCAM-2 is organized similarly to NCAM, including five N-terminal Ig-like domains and two fibronectin type III domains. NCAM-2 is differentially expressed in the developing and mature olfactory epithelium (OE), and may function like NCAM, as an adhesion molecule. One of the unique features of I-set domains is the lack of a C" strand. The structures of this group show that the Ig domain lacks this strand and thus is a member of the I-set of Ig domains.


Pssm-ID: 143278 [Multi-domain]  Cd Length: 98  Bit Score: 43.81  E-value: 1.12e-05
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 161 VPPKISNISSDVTVnEGSNVTLVCMANGRPEPVITWRHLT-----------PLGREFEGEEEYLEILGITR---EQSGKY 226
Cdd:cd05870     1 VQPHIIQLKNETTV-ENGAATLSCKAEGEPIPEITWKRASdghtfsegdksPDGRIEVKGQHGESSLHIKDvklSDSGRY 79

                  ....*...
gi 1720387172 227 ECKAANEV 234
Cdd:cd05870    80 DCEAASRI 87
Ig3_L1-CAM_like cd05731
Third immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM), and similar ...
169-237 1.14e-05

Third immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM), and similar domains; The members here are composed of the third immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM). L1 belongs to the L1 subfamily of cell adhesion molecules (CAMs) and is comprised of an extracellular region having six Ig-like domains and five fibronectin type III domains, a transmembrane region and an intracellular domain. L1 is primarily expressed in the nervous system and is involved in its development and function. L1 is associated with an X-linked recessive disorder, X-linked hydrocephalus, MASA syndrome, and spastic paraplegia type 1, that involves abnormalities of axonal growth. This group also contains the chicken neuron-glia cell adhesion molecule, Ng-CAM and human neurofascin.


Pssm-ID: 409394 [Multi-domain]  Cd Length: 83  Bit Score: 43.17  E-value: 1.14e-05
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|...
gi 1720387172 169 SSDVTVNEGSNVTLVCMANGRPEPVITWRHL---TPLGREFEGE-EEYLEILGITREQSGKYECKAANEVSSA 237
Cdd:cd05731     2 ESSTMVLRGGVLLLECIAEGLPTPDIRWIKLggeLPKGRTKFENfNKTLKIENVSEADSGEYQCTASNTMGSA 74
Ig6_Contactin-2 cd05854
Sixth immunoglobulin (Ig) domain of contactin-2; The members here are composed of the sixth ...
252-344 1.16e-05

Sixth immunoglobulin (Ig) domain of contactin-2; The members here are composed of the sixth immunoglobulin (Ig) domain of the neural cell adhesion molecule contactin-2-like. Contactins are comprised of six Ig domains followed by four fibronectin type III (FnIII) domains anchored to the membrane by glycosylphosphatidylinositol. Contactin-2 (TAG-1, axonin-1) facilitates cell adhesion by homophilic binding between molecules in apposed membranes. It may play a part in the neuronal processes of neurite outgrowth, axon guidance and fasciculation, and neuronal migration. The first four Ig domains form the intermolecular binding fragment, which arranges as a compact U-shaped module by contacts between IG domains 1 and 4, and domains 2 and 3. The different contactins show different expression patterns in the central nervous system. During development and in adulthood, contactin-2 is transiently expressed in subsets of central and peripheral neurons. Contactin-2 is also expressed in retinal amacrine cells (AC) in the developing chick retina, corresponding to the period of formation and maturation of AC processes.


Pssm-ID: 409440  Cd Length: 102  Bit Score: 43.88  E-value: 1.16e-05
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 252 ITESKSN-EATTGRQASLKCEASAVPAPD--FEWYRDDTRIN--SANG----LEIKSTEGqsSLTVTNVTEEHYGNYTCV 322
Cdd:cd05854     5 ITLAPSSaDINQGENLTLQCHASHDPTMDltFTWSLDDFPIDldKPNGhyrrMEVKETIG--DLVIVNAQLSHAGTYTCT 82
                          90       100
                  ....*....|....*....|..
gi 1720387172 323 AANKLGVTNASLVLfrpgSVRG 344
Cdd:cd05854    83 AQTVVDSASASATL----VVRG 100
IgI_3_NCAM-1 cd05730
Third immunoglobulin (Ig)-like domain of Neural Cell Adhesion Molecule 1 (NCAM-1); member of ...
162-238 1.21e-05

Third immunoglobulin (Ig)-like domain of Neural Cell Adhesion Molecule 1 (NCAM-1); member of the I-set of IgSF domains; The members here are composed of the third immunoglobulin (Ig)-like domain of Neural Cell Adhesion Molecule (NCAM-1). NCAM plays important roles in the development and regeneration of the central nervous system, in synaptogenesis and neural migration. NCAM mediates cell-cell and cell-substratum recognition and adhesion via homophilic (NCAM-NCAM), and heterophilic (NCAM-non-NCAM), interactions. NCAM is expressed as three major isoforms having different intracellular extensions. The extracellular portion of NCAM has five N-terminal Ig-like domains and two fibronectin type III domains. The double zipper adhesion complex model for NCAM homophilic binding involves Ig1, Ig2, and Ig3. By this model, Ig1 and Ig2 mediate dimerization of NCAM molecules situated on the same cell surface (cis interactions), and Ig3 domains mediate interactions between NCAM molecules expressed on the surface of opposing cells (trans interactions) through binding to the Ig1 and Ig2 domains. The adhesive ability of NCAM is modulated by the addition of polysialic acid chains to the fifth Ig-like domain.


Pssm-ID: 143207 [Multi-domain]  Cd Length: 95  Bit Score: 43.38  E-value: 1.21e-05
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 162 PP--KISNISSDVTVNEGSNVTLVCMANGRPEPVITW-RHLTPLGREFEGEE-----EYLEILGITREQSGKYECKAANE 233
Cdd:cd05730     1 PPtiRARQSEVNATANLGQSVTLACDADGFPEPTMTWtKDGEPIESGEEKYSfnedgSEMTILDVDKLDEAEYTCIAENK 80

                  ....*
gi 1720387172 234 VSSAD 238
Cdd:cd05730    81 AGEQE 85
IgI_hNeurofascin_like cd05875
Immunoglobulin (Ig)-like domain of human neurofascin (NF); member of the I-set of Ig ...
250-338 1.71e-05

Immunoglobulin (Ig)-like domain of human neurofascin (NF); member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the first immunoglobulin (Ig)-like domain of human neurofascin (NF). NF belongs to the L1 subfamily of cell adhesion molecules (CAMs) and is comprised of an extracellular region having six Ig-like domains and five fibronectin type III domains, a transmembrane region, and a cytoplasmic domain. NF has many alternatively spliced isoforms having different temporal expression patterns during development. NF participates in axon subcellular targeting and synapse formation, however little is known of the functions of the different isoforms. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lacks a C" strand.


Pssm-ID: 409459  Cd Length: 95  Bit Score: 43.04  E-value: 1.71e-05
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 250 PTITESKSNEATTGRQASL--KCEASAVPAPDFEWYRDDTRINSANGLEIKSTEGQSSLTVT----NVTEEHYGNYTCVA 323
Cdd:cd05875     1 PTITKQSAKDYIVDPRDNIliECEAKGNPVPTFHWTRNGKFFNVAKDPRVSMRRRSGTLVIDfrggGRPEDYEGEYQCFA 80
                          90
                  ....*....|....*
gi 1720387172 324 ANKLGVTNASLVLFR 338
Cdd:cd05875    81 RNKFGTALSNKIRLQ 95
IgC_1_Robo cd07693
First immunoglobulin (Ig)-like constant domain in Robo (roundabout) receptors, and similar ...
163-196 2.09e-05

First immunoglobulin (Ig)-like constant domain in Robo (roundabout) receptors, and similar domains; The members here are composed of the first immunoglobulin (Ig)-like domain in Roundabout (Robo) receptors. Robo receptors play a role in the development of the central nervous system (CNS), and are receptors of Slit protein. Slit is a repellant secreted by the neural cells in the midline. Slit acts through Robo to prevent most neurons from crossing the midline from either side. Three mammalian Robo homologs (Robo1, Robo2, and Robo3), and three mammalian Slit homologs (Slit1, Slit2, Slit3), have been identified. Commissural axons, which cross the midline, express low levels of Robo; longitudinal axons, which avoid the midline, express high levels of Robo. Robo1, Robo2, and Robo3 are expressed by commissural neurons in the vertebrate spinal cord and Slit1, Slit2,and Slit3 are expressed at the ventral midline. Robo3 is a divergent member of the Robo family which instead of being a positive regulator of Slit responsiveness, antagonizes Slit responsiveness in precrossing axons. The Slit-Robo interaction is mediated by the second leucine-rich repeat (LRR) domain of Slit and the two N-terminal Ig domains of Robo, Ig1 and Ig2. The primary Robo binding site for Slit2 has been shown by surface plasmon resonance experiments and mutational analysis to be is the Ig1 domain, while the Ig2 domain has been proposed to harbor a weak secondary binding site.


Pssm-ID: 409490 [Multi-domain]  Cd Length: 99  Bit Score: 42.92  E-value: 2.09e-05
                          10        20        30
                  ....*....|....*....|....*....|....
gi 1720387172 163 PKISNISSDVTVNEGSNVTLVCMANGRPEPVITW 196
Cdd:cd07693     1 PRIVEHPSDLIVSKGDPATLNCKAEGRPTPTIQW 34
IgI_7_Dscam cd20954
Seventh immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar ...
249-328 2.12e-05

Seventh immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar domains; a member of the I-set of IgSF domains; The members here are composed of the seventh immunoglobulin domain of the Drosophila melanogaster Down syndrome cell adhesion molecule (DSCAM) protein and similar proteins. Down syndrome cell adhesion molecule (DSCAM) is a cell adhesion molecule that plays critical roles in neural development, including axon guidance and branching, axon target recognition, self-avoidance and synaptic formation. DSCAM belongs to the immunoglobulin superfamily and contributes to defects in the central nervous system in Down syndrome patients. Vertebrate DSCAMs differ from Drosophila Dscam1 in that they lack the extensive alternative splicing that occurs in the insect gene. Drosophila melanogaster Dscam has 38,016 isoforms generated by the alternative splicing of four variable exon clusters, which allows every neuron in the fly to display a distinctive set of Dscam proteins on its cell surface. Drosophila Dscam1 is a cell-surface protein that plays important roles in neural development and axon tiling of neurons. It is shown that thousands of isoforms bind themselves through specific homophilic (self-binding) interactions, a process which mediates cellular self-recognition. Drosophila Dscam2 is also alternatively spliced and plays a key role in the development of two visual system neurons, monopolar cells L1 and L2. This group is a member of the I-set Ig domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand but lack a C" strand.


Pssm-ID: 409546 [Multi-domain]  Cd Length: 96  Bit Score: 42.68  E-value: 2.12e-05
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 249 PPT-ITESKSNEATTGRQASLKCEASAVPAPDFEW----------YRDdtrINSANGLEIkstEGQSSLTVTNVTEEHYG 317
Cdd:cd20954     1 PPRwIVEPVDANVAAGQDVMLHCQADGFPTPTVTWkkatgstpgeYKD---LLYDPNVRI---LPNGTLVFGHVQKENEG 74
                          90
                  ....*....|.
gi 1720387172 318 NYTCVAANKLG 328
Cdd:cd20954    75 HYLCEAKNGIG 85
IgI_VEGFR-2 cd05864
Immunoglobulin (Ig)-like domain of vascular endothelial growth factor receptor 2 (VEGFR-2); ...
259-327 3.16e-05

Immunoglobulin (Ig)-like domain of vascular endothelial growth factor receptor 2 (VEGFR-2); member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the immunoglobulin (Ig)-like domain of vascular endothelial growth factor receptor 2 (VEGFR-2). The VEGFRs have an extracellular component with seven Ig-like domains, a transmembrane segment, and an intracellular tyrosine kinase domain interrupted by a kinase-insert domain. VEGFRs bind VEGFs with high affinity at the Ig-like domains. VEGFR-2 (KDR/Flk-1) is a major mediator of the mitogenic, angiogenic and microvascular permeability-enhancing effects of VEGF-A; VEGF-A is important to the growth and maintenance of vascular endothelial cells and to the development of new blood- and lymphatic-vessels in physiological and pathological states. VEGF-A also interacts with VEGFR-1, which it binds more strongly than VEGFR-2. VEGFR-1 and VEGFR-2 may mediate a chemotactic and a survival signal in hematopoietic stem cells or leukemia cells. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409450  Cd Length: 89  Bit Score: 42.22  E-value: 3.16e-05
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 1720387172 259 EATTGRQASLKCEASAVPAPDFEWYRDDTRINSANGLEIKStegqsSLTVTNVTEEHYGNYTCVAANKL 327
Cdd:cd05864    13 EAKVGERVRIPVKYLGYPPPEIKWYKNGIPIESNHTIKAGH-----VLTIMEVTEKDAGNYTVVLTNPI 76
IgI_2_RPTP_IIa_LAR_like cd05738
Second immunoglobulin (Ig)-like domain of the receptor protein tyrosine phosphatase (RPTP)-F; ...
264-328 3.68e-05

Second immunoglobulin (Ig)-like domain of the receptor protein tyrosine phosphatase (RPTP)-F; member of the I-set of IgSF domains; The members here are composed of the second immunoglobulin (Ig)-like domain found in the receptor protein tyrosine phosphatase (RPTP)-F, also known as LAR. LAR belongs to the RPTP type IIa subfamily. Members of this subfamily are cell adhesion molecule-like proteins involved in central nervous system (CNS) development. They have large extracellular portions comprised of multiple Ig-like domains and two to nine fibronectin type III (FNIII) domains and a cytoplasmic portion having two tandem phosphatase domains.


Pssm-ID: 409400 [Multi-domain]  Cd Length: 91  Bit Score: 41.92  E-value: 3.68e-05
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1720387172 264 RQASLKCEASAVPAPDFEWYRD--DTRINSANGlEIKSTEgQSSLTVTNVTEEHYGNYTCVAANKLG 328
Cdd:cd05738    15 RTATMLCAASGNPDPEISWFKDflPVDTATSNG-RIKQLR-SGALQIENSEESDQGKYECVATNSAG 79
Ig3_Peroxidasin cd05745
Third immunoglobulin (Ig)-like domain of peroxidasin; The members here are composed of the ...
176-236 3.85e-05

Third immunoglobulin (Ig)-like domain of peroxidasin; The members here are composed of the third immunoglobulin (Ig)-like domain in peroxidasin. Peroxidasin has a peroxidase domain and interacting extracellular motifs containing four Ig-like domains. It has been suggested that peroxidasin is secreted and has functions related to the stabilization of the extracellular matrix. It may play a part in various other important processes such as removal and destruction of cells which have undergone programmed cell death and protection of the organism against non-self.


Pssm-ID: 143222 [Multi-domain]  Cd Length: 74  Bit Score: 41.46  E-value: 3.85e-05
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 1720387172 176 EGSNVTLVCMANGRPEPVITW-RHLTPLG---REFEGEEEYLEILGITREQSGKYECKAANEVSS 236
Cdd:cd05745     1 EGQTVDFLCEAQGYPQPVIAWtKGGSQLSvdrRHLVLSSGTLRISRVALHDQGQYECQAVNIVGS 65
IgI_NCAM-1 cd05869
Immunoglobulin (Ig)-like I-set domain of Neural Cell Adhesion Molecule 1 (NCAM-1); The members ...
250-336 4.34e-05

Immunoglobulin (Ig)-like I-set domain of Neural Cell Adhesion Molecule 1 (NCAM-1); The members here are composed of the fourth Ig domain of Neural Cell Adhesion Molecule 1(NCAM-1). NCAM plays important roles in the development and regeneration of the central nervous system, in synaptogenesis and neural migration. NCAM mediates cell-cell and cell-substratum recognition and adhesion via homophilic (NCAM-NCAM) and heterophilic (NCAM-non-NCAM) interactions. NCAM is expressed as three major isoforms having different intracellular extensions. The extracellular portion of NCAM has five N-terminal Ig-like domains and two fibronectin type III domains. The double zipper adhesion complex model for NCAM homophilic binding involves Ig1, Ig2, and Ig3. By this model, Ig1 and Ig2 mediate dimerization of NCAM molecules situated on the same cell surface (cis interactions), and Ig3 domains mediate interactions between NCAM molecules expressed on the surface of opposing cells (trans interactions), through binding to the Ig1 and Ig2 domains. The adhesive ability of NCAM is modulated by the addition of polysialic acid chains to the fifth Ig-like domain. One of the unique features of I-set domains is the lack of a C" strand. The structures of this group show that the Ig domain lacks this strand and thus is a member of the I-set of Ig domains.


Pssm-ID: 143277 [Multi-domain]  Cd Length: 97  Bit Score: 41.89  E-value: 4.34e-05
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 250 PTITESKSNEATT-GRQASLKCEASAVPAPDFEWyRDDTRINSANG------LEIKSTEGQSSLTVTNVTEEHYGNYTCV 322
Cdd:cd05869     3 PKITYVENQTAMElEEQITLTCEASGDPIPSITW-RTSTRNISSEEktldghIVVRSHARVSSLTLKYIQYTDAGEYLCT 81
                          90
                  ....*....|....
gi 1720387172 323 AANKLGVTNASLVL 336
Cdd:cd05869    82 ASNTIGQDSQSMYL 95
IgI_2_MuSK cd20968
agrin-responsive second immunoglobulin-like domains (Ig2) of the Muscle-specific kinase (MuSK) ...
164-246 4.41e-05

agrin-responsive second immunoglobulin-like domains (Ig2) of the Muscle-specific kinase (MuSK) ectodomain; a member of the I-set of Ig superfamily domains; The members here are composed of the second immunoglobulin-like (Ig) domains of the Muscle-specific kinase (MuSK) ectodomain. MuSK is a receptor tyrosine kinase specifically expressed in skeletal muscle, where it plays a central role in the formation and maintenance of the neuromuscular junction (NMJ). MuSK is activated by agrin, a neuron-derived heparan sulfate proteoglycan. The activation of MUSK in myotubes regulates the formation of NMJs through the regulation of different processes including the specific expression of genes in subsynaptic nuclei, the reorganization of the actin cytoskeleton and the clustering of the acetylcholine receptors (AChR) in the postsynaptic membrane. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Unlike the V-set, one of the distinctive features of I-set domains is the lack of a C" strand. The structure of the MuSK lacks this strand and thus it belongs to the I-set of the IgSF. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis.


Pssm-ID: 409560 [Multi-domain]  Cd Length: 88  Bit Score: 41.84  E-value: 4.41e-05
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 164 KISNISSDVTVNEGSNVTLVCMANGRPEPVITW----RHLTPLGREFEGEEEYLEILGITREQSGKYECKAANEVSSADV 239
Cdd:cd20968     1 KITRPPTNVTIIEGLKAVLPCTTMGNPKPSVSWikgdDLIKENNRIAVLESGSLRIHNVQKEDAGQYRCVAKNSLGIAYS 80

                  ....*..
gi 1720387172 240 KQVKVTV 246
Cdd:cd20968    81 KPVTIEV 87
IgC2_3_Dscam cd20957
Third immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar domains; ...
162-237 4.62e-05

Third immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar domains; a member of the Constant 2 (C2)-set of IgSF domains; The members here are composed of the third immunoglobulin domain of the Drosophila melanogaster Down syndrome cell adhesion molecule (DSCAM) protein and similar proteins. Down syndrome cell adhesion molecule (DSCAM) is a cell adhesion molecule that plays critical roles in neural development, including axon guidance and branching, axon target recognition, self-avoidance and synaptic formation. DSCAM belongs to the immunoglobulin superfamily and contributes to defects in the central nervous system in Down syndrome patients. Vertebrate DSCAMs differ from Drosophila Dscam1 in that they lack the extensive alternative splicing that occurs in the insect gene. Drosophila melanogaster Dscam has 38,016 isoforms generated by the alternative splicing of four variable exon clusters, which allows every neuron in the fly to display a distinctive set of Dscam proteins on its cell surface. Drosophila Dscam1 is a cell-surface protein that plays important roles in neural development and axon tiling of neurons. It is shown that thousands of isoforms bind themselves through specific homophilic (self-binding) interactions, a process which mediates cellular self-recognition. Drosophila Dscam2 is also alternatively spliced and plays a key role in the development of two visual system neurons, monopolar cells L1 and L2. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. This group belongs to the C2-set of IgSF domains, having A, B, and E strands in one beta-sheet and A', G, F, C, and C' in the other. Unlike other Ig domain sets, the C2-set lacks the D strand.


Pssm-ID: 409549 [Multi-domain]  Cd Length: 88  Bit Score: 41.75  E-value: 4.62e-05
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 162 PPKISNISSDVTVNEGSNVTLVCMANGRPEPVITW----RHLTPLGREFEGEEEYLEILGITREQSGKYECKAANEVSSA 237
Cdd:cd20957     1 PLSATIDPPVQTVDFGRTAVFNCSVTGNPIHTVLWmkdgKPLGHSSRVQILSEDVLVIPSVKREDKGMYQCFVRNDGDSA 80
IgI_7_Dscam cd20954
Seventh immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar ...
162-246 4.90e-05

Seventh immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar domains; a member of the I-set of IgSF domains; The members here are composed of the seventh immunoglobulin domain of the Drosophila melanogaster Down syndrome cell adhesion molecule (DSCAM) protein and similar proteins. Down syndrome cell adhesion molecule (DSCAM) is a cell adhesion molecule that plays critical roles in neural development, including axon guidance and branching, axon target recognition, self-avoidance and synaptic formation. DSCAM belongs to the immunoglobulin superfamily and contributes to defects in the central nervous system in Down syndrome patients. Vertebrate DSCAMs differ from Drosophila Dscam1 in that they lack the extensive alternative splicing that occurs in the insect gene. Drosophila melanogaster Dscam has 38,016 isoforms generated by the alternative splicing of four variable exon clusters, which allows every neuron in the fly to display a distinctive set of Dscam proteins on its cell surface. Drosophila Dscam1 is a cell-surface protein that plays important roles in neural development and axon tiling of neurons. It is shown that thousands of isoforms bind themselves through specific homophilic (self-binding) interactions, a process which mediates cellular self-recognition. Drosophila Dscam2 is also alternatively spliced and plays a key role in the development of two visual system neurons, monopolar cells L1 and L2. This group is a member of the I-set Ig domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand but lack a C" strand.


Pssm-ID: 409546 [Multi-domain]  Cd Length: 96  Bit Score: 41.91  E-value: 4.90e-05
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 162 PPKISNISSDVTVNEGSNVTLVCMANGRPEPVITWRHLTP--LG---------REFEGEEEYLEILGITREQSGKYECKA 230
Cdd:cd20954     1 PPRWIVEPVDANVAAGQDVMLHCQADGFPTPTVTWKKATGstPGeykdllydpNVRILPNGTLVFGHVQKENEGHYLCEA 80
                          90
                  ....*....|....*.
gi 1720387172 231 ANEVSSADVKQVKVTV 246
Cdd:cd20954    81 KNGIGSGLSKVIFLKV 96
Ig4_Peroxidasin cd05746
Fourth immunoglobulin (Ig)-like domain of peroxidasin; The members here are composed of the ...
268-336 5.14e-05

Fourth immunoglobulin (Ig)-like domain of peroxidasin; The members here are composed of the fourth immunoglobulin (Ig)-like domain in peroxidasin. Peroxidasin has a peroxidase domain and interacting extracellular motifs containing four Ig-like domains. It has been suggested that peroxidasin is secreted, and has functions related to the stabilization of the extracellular matrix. It may play a part in various other important processes such as removal and destruction of cells which have undergone programmed cell death and protection of the organism against non-self.


Pssm-ID: 143223  Cd Length: 69  Bit Score: 41.01  E-value: 5.14e-05
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 1720387172 268 LKCEASAVPAPDFEWYRDDTRINSANGLEIkSTEGqsSLTVTNVTEEHYGNYTCVAANKLGVTNASLVL 336
Cdd:cd05746     3 IPCSAQGDPEPTITWNKDGVQVTESGKFHI-SPEG--YLAIRDVGVADQGRYECVARNTIGYASVSMVL 68
IgI_4_Dscam cd20956
Fourth immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar domains; ...
162-237 6.30e-05

Fourth immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar domains; a member of the I-set of IgSF domains; The members here are composed of the fourth immunoglobulin domain of the Drosophila melanogaster Down syndrome cell adhesion molecule (DSCAM) protein and similar proteins. Down syndrome cell adhesion molecule (DSCAM) is a cell adhesion molecule that plays critical roles in neural development, including axon guidance and branching, axon target recognition, self-avoidance and synaptic formation. DSCAM belongs to the immunoglobulin superfamily and contributes to defects in the central nervous system in Down syndrome patients. Vertebrate DSCAMs differ from Drosophila Dscam1 in that they lack the extensive alternative splicing that occurs in the insect gene. Drosophila melanogaster Dscam has 38,016 isoforms generated by the alternative splicing of four variable exon clusters, which allows every neuron in the fly to display a distinctive set of Dscam proteins on its cell surface. Drosophila Dscam1 is a cell-surface protein that plays important roles in neural development and axon tiling of neurons. It is shown that thousands of isoforms bind themselves through specific homophilic (self-binding) interactions, a process which mediates cellular self-recognition. Drosophila Dscam2 is also alternatively spliced and plays a key role in the development of two visual system neurons, monopolar cells L1 and L2. This group is a member of the I-set Ig domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand but lack a C" strand.


Pssm-ID: 409548 [Multi-domain]  Cd Length: 96  Bit Score: 41.39  E-value: 6.30e-05
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 162 PPKISNISSDVTVNEGSNVTLVCMANGRPEPVITWR----------------HLTPLGRefegEEEYLEILGITREQSGK 225
Cdd:cd20956     1 APVLLETFSEQTLQPGPSVSLKCVASGNPLPQITWTldgfpipesprfrvgdYVTSDGD----VVSYVNISSVRVEDGGE 76
                          90
                  ....*....|..
gi 1720387172 226 YECKAANEVSSA 237
Cdd:cd20956    77 YTCTATNDVGSV 88
Ig5_Contactin-1 cd05852
Fifth immunoglobulin (Ig) domain of contactin-1; The members here are composed of the fifth ...
260-336 6.96e-05

Fifth immunoglobulin (Ig) domain of contactin-1; The members here are composed of the fifth immunoglobulin (Ig) domain of the neural cell adhesion molecule contactin-1. Contactins are comprised of six Ig domains followed by four fibronectin type III (FnIII) domains anchored to the membrane by glycosylphosphatidylinositol. Contactin-1 is differentially expressed in tumor tissues and may through a RhoA mechanism, facilitate invasion and metastasis of human lung adenocarcinoma.


Pssm-ID: 409438  Cd Length: 89  Bit Score: 41.14  E-value: 6.96e-05
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1720387172 260 ATTGRQASLKCEASAVPAPDFEWYRDDTRInsANGLEIKSTEgQSSLTVTNVTEEHYGNYTCVAANKLGVTNASLVL 336
Cdd:cd05852    14 AAKGGRVIIECKPKAAPKPKFSWSKGTELL--VNNSRISIWD-DGSLEILNITKLDEGSYTCFAENNRGKANSTGVL 87
IgV_1_Necl-2 cd05881
First (N-terminal) immunoglobulin (Ig)-like domain of nectin-like molecule 2; member of the ...
69-146 7.19e-05

First (N-terminal) immunoglobulin (Ig)-like domain of nectin-like molecule 2; member of the V-set of Ig superfamily (IgSF) domains; The members here are composed of the N-terminal immunoglobulin (Ig)-like domain of nectin-like molecule-2, Necl-2 (also known as cell adhesion molecule 1 (CADM1), SynCAM1, IGSF4A, Tslc1, sgIGSF, and RA175). Nectin-like molecules have similar domain structures to those of nectins. At least five nectin-like molecules have been identified (Necl-1 - Necl-5). They all have an extracellular region containing three Ig-like domains, a transmembrane region, and a cytoplasmic region. The N-terminal Ig-like domain of the extracellular region, belongs to the V-type subfamily of Ig domains, is essential to cell-cell adhesion, and plays a part in the interaction with the envelope glycoprotein D of various viruses. Necl-2 has Ca(2+)-independent homophilic and heterophilic cell-cell adhesion activity. Necl-2 is expressed in a wide variety of tissues and is a putative tumour suppressor gene, which is downregulated in aggressive neuroblastoma.


Pssm-ID: 409465  Cd Length: 94  Bit Score: 41.14  E-value: 7.19e-05
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172  69 TDNITVRQGDTAILRCVVEDKNSKVAWL---NRSGIIFagHDKWSL-DPRVELEKRHALEYSLRIQKVDVYDEGSYTCSV 144
Cdd:cd05881     3 TEDVTVVEGEVATISCRVKNSDDSVIQLlnpNRQTIYF--RDFRPLkDSRFQLVNFSSSELRVSLTNVSISDEGRYFCQL 80

                  ..
gi 1720387172 145 QT 146
Cdd:cd05881    81 YT 82
Ig4_Peroxidasin cd05746
Fourth immunoglobulin (Ig)-like domain of peroxidasin; The members here are composed of the ...
180-242 7.53e-05

Fourth immunoglobulin (Ig)-like domain of peroxidasin; The members here are composed of the fourth immunoglobulin (Ig)-like domain in peroxidasin. Peroxidasin has a peroxidase domain and interacting extracellular motifs containing four Ig-like domains. It has been suggested that peroxidasin is secreted, and has functions related to the stabilization of the extracellular matrix. It may play a part in various other important processes such as removal and destruction of cells which have undergone programmed cell death and protection of the organism against non-self.


Pssm-ID: 143223  Cd Length: 69  Bit Score: 40.63  E-value: 7.53e-05
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1720387172 180 VTLVCMANGRPEPVITWR----HLTPLGREFEGEEEYLEILGITREQSGKYECKAANEVSSADVKQV 242
Cdd:cd05746     1 VQIPCSAQGDPEPTITWNkdgvQVTESGKFHISPEGYLAIRDVGVADQGRYECVARNTIGYASVSMV 67
Ig_Titin_like cd05748
Immunoglobulin (Ig)-like domain of titin and similar proteins; The members here are composed ...
276-334 1.09e-04

Immunoglobulin (Ig)-like domain of titin and similar proteins; The members here are composed of the immunoglobulin (Ig)-like domain found in titin-like proteins and similar proteins. Titin (also called connectin) is a fibrous sarcomeric protein specifically found in vertebrate striated muscle. Titin is a giant protein; depending on isoform composition, it ranges from 2970 to 3700 kDa, and is of a length that spans half a sarcomere. Titin largely consists of multiple repeats of Ig-like and fibronectin type 3 (FN-III)-like domains. Titin connects the ends of myosin thick filaments to Z disks and extends along the thick filament to the H zone. It appears to function similarly to an elastic band, keeping the myosin filaments centered in the sarcomere during muscle contraction or stretching. Within the sarcomere, titin is also attached to or is associated with myosin binding protein C (MyBP-C). MyBP-C appears to contribute to the generation of passive tension by titin and like titin has repeated Ig-like and FN-III domains. Also included in this group are worm twitchin and insect projectin, thick filament proteins of invertebrate muscle which also have repeated Ig-like and FN-III domains.


Pssm-ID: 409406 [Multi-domain]  Cd Length: 82  Bit Score: 40.27  E-value: 1.09e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*....
gi 1720387172 276 PAPDFEWYRDDTRINSANGLEIKSTEGQSSLTVTNVTEEHYGNYTCVAANKLGVTNASL 334
Cdd:cd05748    20 PTPTVTWSKDGQPLKETGRVQIETTASSTSLVIKNAKRSDSGKYTLTLKNSAGEKSATI 78
IgI_3_Robo cd05725
Third immunoglobulin (Ig)-like domain in Robo (roundabout) receptors; member of the I-set of ...
66-142 1.37e-04

Third immunoglobulin (Ig)-like domain in Robo (roundabout) receptors; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the third immunoglobulin (Ig)-like domain in Robo (roundabout) receptors. Robo receptors play a role in the development of the central nervous system (CNS), and are receptors of Slit protein. Slit is a repellant secreted by the neural cells in the midline. Slit acts through Robo to prevent most neurons from crossing the midline from either side. Three mammalian Robo homologs (Robo1, Robo2, Robo3), and three mammalian Slit homologs (Slit-1,Slit-2, Slit-3), have been identified. Commissural axons, which cross the midline, express low levels of Robo; longitudinal axons, which avoid the midline, express high levels of Robo. Robo1, Robo2, and Robo3 are expressed by commissural neurons in the vertebrate spinal cord and Slit-1, Slit-2, and Slit-3 are expressed at the ventral midline. Robo-3 is a divergent member of the Robo family which instead of being a positive regulator of Slit responsiveness, antagonizes Slit responsiveness in precrossing axons. The Slit-Robo interaction is mediated by the second leucine-rich repeat (LRR) domain of Slit and the two N-terminal Ig domains of Robo, Ig1 and Ig2. The primary Robo binding site for Slit2 has been shown by surface plasmon resonance experiments and mutational analysis to be the Ig1 domain, while the Ig2 domain has been proposed to harbor a weak secondary binding site. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409390 [Multi-domain]  Cd Length: 83  Bit Score: 40.07  E-value: 1.37e-04
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 1720387172  66 NRGTDNITVRQGDTAILRCVVE-DKNSKVAWLNRSGIIfaghdkwsldPRVELEKRHalEYSLRIQKVDVYDEGSYTC 142
Cdd:cd05725     1 VKRPQNQVVLVDDSAEFQCEVGgDPVPTVRWRKEDGEL----------PKGRYEILD--DHSLKIRKVTAGDMGSYTC 66
IgI_LRIG1-like cd05763
Immunoglobulin (Ig)-like ectodomain of the LRIG1 (Leucine-rich Repeats And Immunoglobulin-like ...
262-334 1.39e-04

Immunoglobulin (Ig)-like ectodomain of the LRIG1 (Leucine-rich Repeats And Immunoglobulin-like Domains Protein 1) and similar proteins; member of the I-set of IgSF domains; The members here are composed of subgroup of the immunoglobulin (Ig) domain found in the Ig superfamily. The Ig superfamily is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. A predominant feature of most Ig domains is a disulfide bridge connecting the two beta-sheets with a tryptophan residue packed against the disulfide bond. The ectodomain of LRIG1 has two distinct regions: the proposed 15 LRRs and three Ig-like domains closer to the membrane. LRIG1 has been reported to interact with many receptor tyrosine kinases, GDNF/c-Ret, E-cadherin, JAK/STAT, c-Met, and the EGFR family signaling systems. Immunoglobulin Superfamily (IgSF) domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. The structure of the LRIG1 extracellular Ig domain lacks a C" strand and thus is better described as a member of the I-set of IgSF domains.


Pssm-ID: 409420 [Multi-domain]  Cd Length: 91  Bit Score: 40.30  E-value: 1.39e-04
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 1720387172 262 TGRQASLKCEASAVPAPDFEWYRD-DTRINSANGLEIKSTEGQSSLTVTNVTEEHYGNYTCVAANKLG--VTNASL 334
Cdd:cd05763    13 AGSTARLECAATGHPTPQIAWQKDgGTDFPAARERRMHVMPEDDVFFIVDVKIEDTGVYSCTAQNSAGsiSANATL 88
IgI_Twitchin_like cd20949
C-terminal immunoglobulin-like domain of the myosin-associated giant protein kinase Twitchin, ...
250-338 1.40e-04

C-terminal immunoglobulin-like domain of the myosin-associated giant protein kinase Twitchin, and similar domains; member of the I-set IgSF domains; The members here are composed of the C-terminal immunoglobulin-like domain of the myosin-associated giant protein kinase Twitchin and similar proteins, including Caenorhabditis elegans and Aplysia californica Twitchin, Drosophila melanogaster Projectin, and similar proteins. These are very large muscle proteins containing multiple immunoglobulin (Ig)-like and fibronectin type III (FN3) domains and a single kinase domain near the C-terminus. In humans these proteins are called Titin. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. The Ig-like domain of the Twitchin is a member of the I-set IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand but lack a C" strand. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins (titin, telokin, and twitchin), the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D.


Pssm-ID: 409541 [Multi-domain]  Cd Length: 89  Bit Score: 40.39  E-value: 1.40e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 250 PTITESKSneattGRQASLKCEASAVPAPDFEWYRDDTRINSANGLEIKSTEGQSSLTVTNVTEEHYGNYTCVAANKLGV 329
Cdd:cd20949     6 AYVTTVKE-----GQSATILCEVKGEPQPNVTWHFNGQPISASVADMSKYRILADGLLINKVTQDDTGEYTCRAYQVNSI 80

                  ....*....
gi 1720387172 330 tnASLVLFR 338
Cdd:cd20949    81 --ASDMQER 87
IgI_3_RPTP_IIa_LAR_like cd05739
Third immunoglobulin (Ig)-like domain of the receptor protein tyrosine phosphatase (RPTP)-F ...
249-333 1.43e-04

Third immunoglobulin (Ig)-like domain of the receptor protein tyrosine phosphatase (RPTP)-F (also known as LAR), type IIa; member of the I-set of IgSF domains; The members here are composed of the third immunoglobulin (Ig)-like domain found in the receptor protein tyrosine phosphatase (RPTP)-F, also known as LAR. LAR belongs to the RPTP type IIa subfamily. Members of this subfamily are cell adhesion molecule-like proteins involved in central nervous system (CNS) development. They have large extracellular portions comprised of multiple Ig-like domains and two to nine fibronectin type III (FNIII) domains and a cytoplasmic portion having two tandem phosphatase domains. Included in this group is Drosophila LAR (DLAR).


Pssm-ID: 409401  Cd Length: 82  Bit Score: 39.88  E-value: 1.43e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 249 PPTItesksNEATTGRQASLKCEASAVPAPDFEWYRDDTRINSANGLEIksteGQSSLTVTNVTEEhyGNYTCVAANKLG 328
Cdd:cd05739     3 PPSN-----HEVMPGGSVNLTCVAVGAPMPYVKWMKGGEELTKEDEMPV----GRNVLELTNIYES--ANYTCVAISSLG 71

                  ....*
gi 1720387172 329 VTNAS 333
Cdd:cd05739    72 MIEAT 76
IgI_APEG-1_like cd20975
Immunoglobulin-like domain of human Aortic Preferentially Expressed Protein-1 (APEG-1) and ...
171-233 1.58e-04

Immunoglobulin-like domain of human Aortic Preferentially Expressed Protein-1 (APEG-1) and similar proteins; a member of the I-set of IgSF domains; The members here are composed of the immunoglobulin I-set (IgI) domain of the Human Aortic Preferentially Expressed Protein-1 (APEG-1) and similar proteins. APEG-1 is a novel specific smooth muscle differentiation marker predicted to play a role in the growth and differentiation of arterial smooth muscle cells (SMCs). The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Unlike the V-set, one of the distinctive features of I-set domains is the lack of a C" strand. The structure of the human APEG-1 lacks this strand and thus it belongs to the I-set of the IgSF. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis.


Pssm-ID: 409567  Cd Length: 91  Bit Score: 40.15  E-value: 1.58e-04
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1720387172 171 DVTVNEGSNVTLVCMANGRPEPVITW-RHLTPL-------GREFEGEEEYLEILGITREQSGKYECKAANE 233
Cdd:cd20975     9 DQSVREGQDVIMSIRVQGEPKPVVSWlRNRQPVrpdqrrfAEEAEGGLCRLRILAAERGDAGFYTCKAVNE 79
IgI_M-protein_C cd05891
C-terminal immunoglobulin (Ig)-like domain of M-protein; member of the I-set of Ig superfamily ...
263-328 1.71e-04

C-terminal immunoglobulin (Ig)-like domain of M-protein; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the C-terminal immunoglobulin (Ig)-like domain of M-protein (also known as myomesin-2). M-protein is a structural protein localized to the M-band, a transverse structure in the center of the sarcomere, and is a candidate for M-band bridges. M-protein is modular consisting mainly of repetitive IG-like and fibronectin type III (FnIII) domains and has a muscle-type specific expression pattern. M-protein is present in fast fibers.


Pssm-ID: 143299  Cd Length: 92  Bit Score: 40.28  E-value: 1.71e-04
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1720387172 263 GRQASLKCEASAVPAPDFEWYRDDTRINSANGLEIKSTEGQ-SSLTVTNVTEEHYGNYTCVAANKLG 328
Cdd:cd05891    16 GKTLNLTCTVFGNPDPEVIWFKNDQDIELSEHYSVKLEQGKyASLTIKGVTSEDSGKYSINVKNKYG 82
IgI_NrCAM cd05874
Immunoglobulin (Ig)-like domain of NrCAM (Ng (neuronglia) CAM-related cell adhesion molecule); ...
250-338 1.92e-04

Immunoglobulin (Ig)-like domain of NrCAM (Ng (neuronglia) CAM-related cell adhesion molecule); member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the first immunoglobulin (Ig)-like domain of NrCAM (Ng (neuronglia) CAM-related cell adhesion molecule). NrCAM belongs to the L1 subfamily of cell adhesion molecules (CAMs) and is comprised of an extracellular region having six Ig-like domains and five fibronectin type III domains, a transmembrane region, and an intracellular domain. NrCAM is primarily expressed in the nervous system.


Pssm-ID: 409458  Cd Length: 95  Bit Score: 39.97  E-value: 1.92e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 250 PTIT-ESKSNEATTGRQA-SLKCEASAVPAPDFEWYRDDTR--INSANGLEIKSTEGQSSLTVTN--VTEEHYGNYTCVA 323
Cdd:cd05874     1 PTIThQSPKDYIVDPRENiVIQCEAKGKPPPSFSWTRNGTHfdIDKDPKVTMKPNTGTLVINIMNgeKAEAYEGVYQCTA 80
                          90
                  ....*....|....*
gi 1720387172 324 ANKLGVTNASLVLFR 338
Cdd:cd05874    81 RNERGAAVSNNIVIR 95
IgC2_3_Dscam cd20957
Third immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar domains; ...
242-325 1.98e-04

Third immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar domains; a member of the Constant 2 (C2)-set of IgSF domains; The members here are composed of the third immunoglobulin domain of the Drosophila melanogaster Down syndrome cell adhesion molecule (DSCAM) protein and similar proteins. Down syndrome cell adhesion molecule (DSCAM) is a cell adhesion molecule that plays critical roles in neural development, including axon guidance and branching, axon target recognition, self-avoidance and synaptic formation. DSCAM belongs to the immunoglobulin superfamily and contributes to defects in the central nervous system in Down syndrome patients. Vertebrate DSCAMs differ from Drosophila Dscam1 in that they lack the extensive alternative splicing that occurs in the insect gene. Drosophila melanogaster Dscam has 38,016 isoforms generated by the alternative splicing of four variable exon clusters, which allows every neuron in the fly to display a distinctive set of Dscam proteins on its cell surface. Drosophila Dscam1 is a cell-surface protein that plays important roles in neural development and axon tiling of neurons. It is shown that thousands of isoforms bind themselves through specific homophilic (self-binding) interactions, a process which mediates cellular self-recognition. Drosophila Dscam2 is also alternatively spliced and plays a key role in the development of two visual system neurons, monopolar cells L1 and L2. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. This group belongs to the C2-set of IgSF domains, having A, B, and E strands in one beta-sheet and A', G, F, C, and C' in the other. Unlike other Ig domain sets, the C2-set lacks the D strand.


Pssm-ID: 409549 [Multi-domain]  Cd Length: 88  Bit Score: 39.82  E-value: 1.98e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 242 VKVTVnYPPTITesksneATTGRQASLKCEASAVPAPDFEWYRDDTRINSANGLEIKStegQSSLTVTNVTEEHYGNYTC 321
Cdd:cd20957     2 LSATI-DPPVQT------VDFGRTAVFNCSVTGNPIHTVLWMKDGKPLGHSSRVQILS---EDVLVIPSVKREDKGMYQC 71

                  ....
gi 1720387172 322 VAAN 325
Cdd:cd20957    72 FVRN 75
IgI_VEGFR cd04976
Immunoglobulin (Ig)-like domain of vascular endothelial growth factor receptor (VEGFR); member ...
259-336 2.08e-04

Immunoglobulin (Ig)-like domain of vascular endothelial growth factor receptor (VEGFR); member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the immunoglobulin (Ig)-like domain of vascular endothelial growth factor receptor (VEGFR). The VEGFRs have an extracellular component with seven Ig-like domains, a transmembrane segment, and an intracellular tyrosine kinase domain interrupted by a kinase-insert domain. The VEGFR family consists of three members, VEGFR-1 (Flt-1), VEGFR-2 (KDR/Flk-1), and VEGFR-3 (Flt-4). VEGFRs bind VEGFs with high affinity at the Ig-like domains. VEGF-A is important to the growth and maintenance of vascular endothelial cells and to the development of new blood- and lymphatic-vessels in physiological and pathological states. VEGFR-2 is a major mediator of the mitogenic, angiogenic, and microvascular permeability-enhancing effects of VEGF-A. VEGFR-1 may play an inhibitory part in these processes by binding VEGF and interfering with its interaction with VEGFR-2. VEGFR-1 has a signaling role in mediating monocyte chemotaxis. VEGFR-1 and VEGFR-2 may mediate a chemotactic and a survival signal in hematopoietic stem cells or leukemia cells. VEGFR-3 has been shown to be involved in tumor angiogenesis and growth. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409365  Cd Length: 90  Bit Score: 39.89  E-value: 2.08e-04
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 1720387172 259 EATTG-RQASLKCEASAVPAPDFEWYRDDTRINSANGleIKStegQSSLTVTNVTEEHYGNYTCVAANKLGVTNASLVL 336
Cdd:cd04976    13 EATAGkRSVRLPMKVKAYPPPEVVWYKDGLPLTEKAR--YLT---RHSLIIKEVTEEDTGNYTILLSNKQSNVFKNLTA 86
IgI_3_Robo cd05725
Third immunoglobulin (Ig)-like domain in Robo (roundabout) receptors; member of the I-set of ...
170-240 2.10e-04

Third immunoglobulin (Ig)-like domain in Robo (roundabout) receptors; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the third immunoglobulin (Ig)-like domain in Robo (roundabout) receptors. Robo receptors play a role in the development of the central nervous system (CNS), and are receptors of Slit protein. Slit is a repellant secreted by the neural cells in the midline. Slit acts through Robo to prevent most neurons from crossing the midline from either side. Three mammalian Robo homologs (Robo1, Robo2, Robo3), and three mammalian Slit homologs (Slit-1,Slit-2, Slit-3), have been identified. Commissural axons, which cross the midline, express low levels of Robo; longitudinal axons, which avoid the midline, express high levels of Robo. Robo1, Robo2, and Robo3 are expressed by commissural neurons in the vertebrate spinal cord and Slit-1, Slit-2, and Slit-3 are expressed at the ventral midline. Robo-3 is a divergent member of the Robo family which instead of being a positive regulator of Slit responsiveness, antagonizes Slit responsiveness in precrossing axons. The Slit-Robo interaction is mediated by the second leucine-rich repeat (LRR) domain of Slit and the two N-terminal Ig domains of Robo, Ig1 and Ig2. The primary Robo binding site for Slit2 has been shown by surface plasmon resonance experiments and mutational analysis to be the Ig1 domain, while the Ig2 domain has been proposed to harbor a weak secondary binding site. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409390 [Multi-domain]  Cd Length: 83  Bit Score: 39.69  E-value: 2.10e-04
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....
gi 1720387172 170 SDVTVNEGSNVTLVCMANGRPEPVITWRHL---TPLGREFEGEEEYLEILGITREQSGKYECKAANEVSSADVK 240
Cdd:cd05725     5 QNQVVLVDDSAEFQCEVGGDPVPTVRWRKEdgeLPKGRYEILDDHSLKIRKVTAGDMGSYTCVAENMVGKIEAS 78
IgI_SALM5_like cd05764
Immunoglobulin domain of human Synaptic Adhesion-Like Molecule 5 (SALM5) and similar proteins; ...
163-232 2.25e-04

Immunoglobulin domain of human Synaptic Adhesion-Like Molecule 5 (SALM5) and similar proteins; member of the I-set of IgSF domains; This group contains the immunoglobulin domain of human Synaptic Adhesion-Like Molecule 5 (SALM5) and similar proteins. The SALM (for synaptic adhesion-like molecules; also known as Lrfn for leucine-rich repeat and fibronectin type III domain containing) family of adhesion molecules consists of five known members: SALM1/Lrfn2, SALM2/Lrfn1, SALM3/Lrfn4, SALM4/Lrfn3, and SALM5/Lrfn5. SALMs share a similar domain structure, containing leucine-rich repeats (LRRs), an immunoglobulin (Ig) domain, and a fibronectin III (FNIII) domain, followed by a transmembrane domain and a C-terminal PDZ-binding motif. SALM5 is implicated in autism spectrum disorders (ASDs) and schizophrenia, induces presynaptic differentiation in contacting axons. SALM5 interacts with the Ig domains of LAR (Leukocyte common Antigen-Related) family receptor protein tyrosine phosphatases (LAR-RPTPs; LAR, PTPdelta, and PTPsigma). In addition, PTPdelta is implicated in ASDs, ADHD, bipolar disorder, and restless leg syndrome. Studies have shown that LAR-RPTPs are novel and splicing-dependent presynaptic ligands for SALM5, and that they mediate SALM5-dependent presynaptic differentiation. Furthermore, SALM5 maintains AMPA receptor (AMPAR)-mediated excitatory synaptic transmission through mechanisms involving the interaction of SALM5 with LAR-RPTPs. This group belongs to the I-set of immunoglobulin superfamily (IgSF) domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand but lack a C" strand.


Pssm-ID: 409421 [Multi-domain]  Cd Length: 88  Bit Score: 39.77  E-value: 2.25e-04
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1720387172 163 PKISNISSDVTVNEGSNVTLVCMANGRPEPVITWRhlTPLGREFEGEEEYLE-------ILGITREQSGKYECKAAN 232
Cdd:cd05764     1 PLITRHTHELRVLEGQRATLRCKARGDPEPAIHWI--SPEGKLISNSSRTLVydngtldILITTVKDTGAFTCIASN 75
I-set pfam07679
Immunoglobulin I-set domain;
65-142 2.32e-04

Immunoglobulin I-set domain;


Pssm-ID: 400151 [Multi-domain]  Cd Length: 90  Bit Score: 39.55  E-value: 2.32e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172  65 FNRGTDNITVRQGDTAILRCVVE-DKNSKVAWL-NRSGIifaghdkwSLDPRVELEKRHAlEYSLRIQKVDVYDEGSYTC 142
Cdd:pfam07679   3 FTQKPKDVEVQEGESARFTCTVTgTPDPEVSWFkDGQPL--------RSSDRFKVTYEGG-TYTLTISNVQPDDSGKYTC 73
IgI_1_Titin_Z1z2-like cd20974
First Ig-like domain of the giant muscle protein titin Z1z2 in the sarcomeric Z-disk and ...
263-328 2.40e-04

First Ig-like domain of the giant muscle protein titin Z1z2 in the sarcomeric Z-disk and similar proteins; a member of the I-set of IgSF domains; The members here are composed of the first immunoglobulin (Ig)-like domain of the giant muscle protein titin Z1z2 in the sarcomeric Z-disk and similar proteins. Titin is a key component in the assembly and functioning of vertebrate striated muscles. By providing connections at the level of individual microfilaments, it contributes to the fine balance of forces between the two halves of the sarcomere. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Unlike the V-set, one of the distinctive features of I-set domains is the lack of a C" strand. The structure of the titin Z1z2 lacks this strand and thus it belongs to the I-set of the IgSF. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis.


Pssm-ID: 409566 [Multi-domain]  Cd Length: 93  Bit Score: 39.64  E-value: 2.40e-04
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 1720387172 263 GRQASLKCEASAVPAPDFEWYRDDTRINSAN--GLEIKSTEGQSSLTVTNVTEEHYGNYTCVAANKLG 328
Cdd:cd20974    15 GSTATFEAHVSGKPVPEVSWFRDGQVISTSTlpGVQISFSDGRAKLSIPAVTKANSGRYSLTATNGSG 82
Ig2_PTK7 cd05760
Second immunoglobulin (Ig)-like domain of protein tyrosine kinase (PTK) 7; The members here ...
244-328 2.94e-04

Second immunoglobulin (Ig)-like domain of protein tyrosine kinase (PTK) 7; The members here are composed of the second immunoglobulin (Ig)-like domain in protein tyrosine kinase (PTK) 7, also known as CCK4. PTK7 is a subfamily of the receptor protein tyrosine kinase family, and is referred to as an RPTK-like molecule. RPTKs transduce extracellular signals across the cell membrane and play important roles in regulating cell proliferation, migration, and differentiation. PTK7 is organized as an extracellular portion having seven Ig-like domains, a single transmembrane region, and a cytoplasmic tyrosine kinase-like domain. PTK7 is considered a pseudokinase as it has several unusual residues in some of the highly conserved tyrosine kinase (TK) motifs; it is predicted to lack TK activity. PTK7 may function as a cell-adhesion molecule. PTK7 mRNA is expressed at high levels in placenta, melanocytes, liver, lung, pancreas, and kidney. PTK7 is overexpressed in several cancers, including melanoma and colon cancer lines.


Pssm-ID: 409417  Cd Length: 95  Bit Score: 39.53  E-value: 2.94e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 244 VTVNYPPTITESKSNEATTgrqasLKCEASAVPAPDFEWYRDDTRINSANGLEIKSTEgQSSLTVTNVTEEHYGNYTCVA 323
Cdd:cd05760     2 VVLKHPASAAEIQPSSRVT-----LRCHIDGHPRPTYQWFRDGTPLSDGQGNYSVSSK-ERTLTLRSAGPDDSGLYYCCA 75

                  ....*
gi 1720387172 324 ANKLG 328
Cdd:cd05760    76 HNAFG 80
Ig_DSCAM cd05734
Immunoglobulin (Ig)-like domain of Down Syndrome Cell Adhesion molecule (DSCAM); The members ...
177-242 3.32e-04

Immunoglobulin (Ig)-like domain of Down Syndrome Cell Adhesion molecule (DSCAM); The members here are composed of the immunoglobulin (Ig)-like domain of Down Syndrome Cell Adhesion molecule (DSCAM). DSCAM is a cell adhesion molecule expressed largely in the developing nervous system. The gene encoding DSCAM is located at human chromosome 21q22, the locus associated with the intellectual disability phenotype of Down Syndrome. DSCAM is predicted to be the largest member of the IG superfamily. It has been demonstrated that DSCAM can mediate cation-independent homophilic intercellular adhesion.


Pssm-ID: 409397 [Multi-domain]  Cd Length: 97  Bit Score: 39.40  E-value: 3.32e-04
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 1720387172 177 GSNVTLVCMANGRPEPVITWRH-----------LTPL-GREFEGEEEYLEILGITREQSGKYECKAANEVsSADVKQV 242
Cdd:cd05734    16 GKAVVLNCSADGYPPPTIVWKHskgsgvpqfqhIVPLnGRIQLLSNGSLLIKHVLEEDSGYYLCKVSNDV-GADISKS 92
IgI_3_Contactin cd04968
Third immunoglobulin (Ig) domain of contactin; member of the I-set of Ig superfamily (IgSF) ...
256-328 3.46e-04

Third immunoglobulin (Ig) domain of contactin; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the third immunoglobulin (Ig) domain of contactins. Contactins are neural cell adhesion molecules and are comprised of six Ig domains followed by four fibronectin type III (FnIII) domains anchored to the membrane by glycosylphosphatidylinositol. The first four Ig domains form the intermolecular binding fragment, which arranges as a compact U-shaped module via contacts between Ig domains 1 and 4, and between Ig domains 2 and 3. Contactin-2 (TAG-1, axonin-1) may play a part in the neuronal processes of neurite outgrowth, axon guidance and fasciculation, and neuronal migration. This group also includes contactin-1 and contactin-5. The different contactins show different expression patterns in the central nervous system. During development and in adulthood, contactin-2 is transiently expressed in subsets of central and peripheral neurons. Contactin-5 is expressed specifically in the rat postnatal nervous system, peaking at about 3 weeks postnatal, and a lack of contactin-5 (NB-2) results in an impairment of neuronal activity in the rat auditory system. Contactin-5 is highly expressed in the adult human brain in the occipital lobe and in the amygdala. Contactin-1 is differentially expressed in tumor tissues and may, through a RhoA mechanism, facilitate invasion and metastasis of human lung adenocarcinoma. This group belongs to the I-set of IgSF domains.


Pssm-ID: 409357 [Multi-domain]  Cd Length: 88  Bit Score: 39.07  E-value: 3.46e-04
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|...
gi 1720387172 256 KSNEATTGRQASLKCEASAVPAPDFEWYRDDTRINSANglEIKSTEGqsSLTVTNVTEEHYGNYTCVAANKLG 328
Cdd:cd04968     9 ADTYALKGQTVTLECFALGNPVPQIKWRKVDGSPSSQW--EITTSEP--VLEIPNVQFEDEGTYECEAENSRG 77
Ig_Titin_like cd05748
Immunoglobulin (Ig)-like domain of titin and similar proteins; The members here are composed ...
172-244 3.79e-04

Immunoglobulin (Ig)-like domain of titin and similar proteins; The members here are composed of the immunoglobulin (Ig)-like domain found in titin-like proteins and similar proteins. Titin (also called connectin) is a fibrous sarcomeric protein specifically found in vertebrate striated muscle. Titin is a giant protein; depending on isoform composition, it ranges from 2970 to 3700 kDa, and is of a length that spans half a sarcomere. Titin largely consists of multiple repeats of Ig-like and fibronectin type 3 (FN-III)-like domains. Titin connects the ends of myosin thick filaments to Z disks and extends along the thick filament to the H zone. It appears to function similarly to an elastic band, keeping the myosin filaments centered in the sarcomere during muscle contraction or stretching. Within the sarcomere, titin is also attached to or is associated with myosin binding protein C (MyBP-C). MyBP-C appears to contribute to the generation of passive tension by titin and like titin has repeated Ig-like and FN-III domains. Also included in this group are worm twitchin and insect projectin, thick filament proteins of invertebrate muscle which also have repeated Ig-like and FN-III domains.


Pssm-ID: 409406 [Multi-domain]  Cd Length: 82  Bit Score: 38.72  E-value: 3.79e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 172 VTVNEGSNVTLVCMANGRPEPVITW----RHLTPLGREFEGEEEYLEILGI---TREQSGKYECKAANEVS--SADVKqV 242
Cdd:cd05748     2 IVVRAGESLRLDIPIKGRPTPTVTWskdgQPLKETGRVQIETTASSTSLVIknaKRSDSGKYTLTLKNSAGekSATIN-V 80

                  ..
gi 1720387172 243 KV 244
Cdd:cd05748    81 KV 82
IgI_2_FGFR cd05857
Second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor; member of ...
254-331 3.81e-04

Second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor; member of the I-set of IgSF domains; The members here are composed of the second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor. FGF receptors bind FGF signaling polypeptides. FGFs participate in multiple processes such as morphogenesis, development, and angiogenesis. FGFs bind to four FGF receptor tyrosine kinases (FGFR1, FGFR2, FGFR3, FGFR4). Receptor diversity is controlled by alternative splicing producing splice variants with different ligand binding characteristics and different expression patterns. FGFRs have an extracellular region comprised of three IG-like domains, a single transmembrane helix, and an intracellular tyrosine kinase domain. Ligand binding and specificity reside in the Ig-like domains 2 and 3, and the linker region that connects these two. FGFR activation and signaling depend on FGF-induced dimerization, a process involving cell surface heparin or heparin sulfate proteoglycans.


Pssm-ID: 409443 [Multi-domain]  Cd Length: 95  Bit Score: 39.07  E-value: 3.81e-04
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 1720387172 254 ESKSNEATTGRQASLKCEASAVPAPDFEWYRDDTRINSANGLE-IKSTEGQSSLTVTNVTEEHYGNYTCVAANKLGVTN 331
Cdd:cd05857    10 EKKLHAVPAANTVKFRCPAAGNPTPTMRWLKNGKEFKQEHRIGgYKVRNQHWSLIMESVVPSDKGNYTCVVENEYGSIN 88
IgI_Myotilin_C cd05892
C-terminal immunoglobulin (Ig)-like domain of myotilin; member of the I-set of Ig superfamily ...
249-330 4.25e-04

C-terminal immunoglobulin (Ig)-like domain of myotilin; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the C-terminal immunoglobulin (Ig)-like domain of myotilin. Mytolin belongs to the palladin-myotilin-myopalladin family. Proteins belonging to the latter family contain multiple Ig-like domains and function as scaffolds, modulating the actin cytoskeleton. Myotilin is most abundant in skeletal and cardiac muscle and is involved in maintaining sarcomere integrity. It binds to alpha-actinin, filamin, and actin. Mutations in myotilin lead to muscle disorders. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409473  Cd Length: 92  Bit Score: 38.98  E-value: 4.25e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 249 PPTITESKSNEATTGRQASLKCEASAVPAPDFEWYRDD--TRINSANGLEIKSTEGQSSLTVTNVTEEHYGNYTCVAANK 326
Cdd:cd05892     1 PMFIQKPQNKKVLEGDPVRLECQISAIPPPQIFWKKNNemLQYNTDRISLYQDNCGRICLLIQNANKKDAGWYTVSAVNE 80

                  ....
gi 1720387172 327 LGVT 330
Cdd:cd05892    81 AGVV 84
Ig3_L1-CAM cd05876
Third immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM); The members here ...
260-328 4.49e-04

Third immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM); The members here are composed of the third immunoglobulin (Ig)-like domain of the L1 cell adhesion molecule (CAM). L1 belongs to the L1 subfamily of cell adhesion molecules (CAMs) and is comprised of an extracellular region having six Ig-like domains, five fibronectin type III domains, a transmembrane region and an intracellular domain. L1 is primarily expressed in the nervous system and is involved in its development and function. L1 is associated with an X-linked recessive disorder, X-linked hydrocephalus, MASA syndrome, or spastic paraplegia type 1, that involves abnormalities of axonal growth. This group also contains the chicken neuron-glia cell adhesion molecule, Ng-CAM.


Pssm-ID: 409460 [Multi-domain]  Cd Length: 83  Bit Score: 38.74  E-value: 4.49e-04
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 1720387172 260 ATTGRQASLKCEASAVPAPDFEWYRDDTRINSANGleiKSTEGQSSLTVTNVTEEHYGNYTCVAANKLG 328
Cdd:cd05876     7 ALRGQSLVLECIAEGLPTPTVKWLRPSGPLPPDRV---KYQNHNKTLQLLNVGESDDGEYVCLAENSLG 72
IgI_TrKABC_d5 cd04971
Fifth domain (immunoglobulin-like) of Trk receptors TrkA, TrkB, and TrkC; member of the I-set ...
276-335 5.06e-04

Fifth domain (immunoglobulin-like) of Trk receptors TrkA, TrkB, and TrkC; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the fifth domain of Trk receptors TrkA, TrkB, and TrkC, an immunoglobulin (Ig)-like domain which binds to neurotrophin. The Trk family of receptors are tyrosine kinase receptors. They are activated by dimerization, leading to autophosphorylation of intracellular tyrosine residues, and triggering the signal transduction pathway. TrkA, TrkB, and TrkC share significant sequence homology and domain organization. The first three domains are leucine-rich domains while the fourth and fifth domains are Ig-like domains playing a part in ligand binding. TrkA, TrkB, and TrkC mediate the trophic effects of the neurotrophin Nerve Growth Factor (NGF) family. TrkA is recognized by NGF. TrkB is recognized by brain-derived neurotrophic factor (BDNF) and neurotrophin (NT)-4. TrkC is recognized by NT-3. NT-3 is promiscuous as in some cell systems it activates TrkA and TrkB receptors. TrkA is a receptor found in all major NGF targets, including the sympathetic, trigeminal, and dorsal root ganglia, cholinergic neurons of the basal forebrain, and the striatum. TrKB transcripts are found throughout multiple structures of the central and peripheral nervous systems. The TrkC gene is expressed throughout the mammalian nervous system. This group belongs to the I-set of IgSF domains.


Pssm-ID: 409360  Cd Length: 96  Bit Score: 38.92  E-value: 5.06e-04
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1720387172 276 PAPDFEWYRDDTRINSANG-----LEIKSTEGQSS--LTVTNVTEEHYGNYTCVAANKLGVTNASLV 335
Cdd:cd04971    26 PKPTLTWYHNGAVLNESDYirteiHYEAATPTEYHgcLKFDNPTHVNNGNYTLVASNEYGQDSKSIS 92
IgI_3_FGFR2 cd05858
Third immunoglobulin (Ig)-like domain of fibroblast growth factor receptor 2 (FGFR2); member ...
261-333 5.08e-04

Third immunoglobulin (Ig)-like domain of fibroblast growth factor receptor 2 (FGFR2); member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the third immunoglobulin (Ig)-like domain of human fibroblast growth factor receptor 2 (FGFR2). Fibroblast growth factors (FGFs) participate in morphogenesis, development, angiogenesis, and wound healing. These FGF-stimulated processes are mediated by four FGFR tyrosine kinases (FGRF1-4). FGFRs are comprised of an extracellular portion consisting of three Ig-like domains, a transmembrane helix, and a cytoplasmic portion having protein tyrosine kinase activity. The highly conserved Ig-like domains 2 and 3, and the linker region between D2 and D3 define a general binding site for FGFs. FGFR2 is required for male sex determination. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409444  Cd Length: 105  Bit Score: 39.17  E-value: 5.08e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 261 TTGRQASLKCEASAVPAPDFEWYRDDTRINSANG------LEIKSTEGQSS-------LTVTNVTEEHYGNYTCVAANKL 327
Cdd:cd05858    14 VVGTDAEFVCKVYSDAQPHIQWLKHVEKNGSKYGpdglpyVEVLKTAGVNTtdkeievLYLRNVTFEDAGEYTCLAGNSI 93

                  ....*.
gi 1720387172 328 GVTNAS 333
Cdd:cd05858    94 GISHHS 99
IgI_Lingo-1 cd20969
Immunoglobulin I-set domain of the Leucine-rich repeat and immunoglobin-like domain-containing ...
172-237 5.31e-04

Immunoglobulin I-set domain of the Leucine-rich repeat and immunoglobin-like domain-containing protein 1 (Lingo-1); The members here are composed of the immunoglobulin I-set (IgI) domain of the Leucine-rich repeat and immunoglobin-like domain-containing protein 1 (Lingo-1). Human Lingo-1 is a central nervous system-specific transmembrane glycoprotein also known as LERN-1, which functions as a negative regulator of neuronal survival, axonal regeneration, and oligodendrocyte differentiation and myelination. Lingo-1 is a key component of the Nogo receptor signaling complex (RTN4R/NGFR) in RhoA activation responsible for some inhibition of axonal regeneration by myelin-associated factors. The ligand-binding ectodomain of human Lingo-1 contains a bimodular, kinked structure composed of leucine-rich repeat (LRR) and immunoglobulin (Ig)-like modules. Diseases associated with Lingo-1 include mental retardation, autosomal recessive 64 and essential tremor. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Unlike the V-set, one of the distinctive features of I-set domains is the lack of a C" strand. The structure of the Lingo-1 lacks this strand and thus it belongs to the I-set of the IgSF. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis.


Pssm-ID: 409561  Cd Length: 92  Bit Score: 38.91  E-value: 5.31e-04
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|...
gi 1720387172 172 VTVNEGSNVTLVCMANGRPEPVITW----RHLTPLGREFEGEEEYLEILGITREQ---SGKYECKAANEVSSA 237
Cdd:cd20969    12 VFVDEGHTVQFVCRADGDPPPAILWlsprKHLVSAKSNGRLTVFPDGTLEVRYAQvqdNGTYLCIAANAGGND 84
IgC2_CEACAM5-like cd20948
Fifth immunoglobulin (Ig)-like domain of the carcinoembryonic antigen (CEA) related cell ...
268-336 5.63e-04

Fifth immunoglobulin (Ig)-like domain of the carcinoembryonic antigen (CEA) related cell adhesion molecule 5 (CEACAM5) and similar domains; member of the C2-set IgSF domains; The members here are composed of the fifth immunoglobulin (Ig)-like domain of the carcinoembryonic antigen (CEA) related cell adhesion molecule 5 (CEACAM5) and similar domains. The CEA family is a group of anchored or secreted glycoproteins, expressed by epithelial cells, leukocytes, endothelial cells and placenta. The CEA family is divided into the CEACAM and pregnancy-specific glycoprotein (PSG) subfamilies. Carcinoembryonic antigen-related cell adhesion molecule 5 (CEACAM5), also known as CD66e (Cluster of Differentiation 66e), is a cell surface glycoprotein that plays a role in cell adhesion, intracellular signaling and tumor progression. Diseases associated with CEACAM5 include lung cancer and rectum cancer. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. This group belongs to the C2-set of IgSF domains, having A, B, and E strands in one beta-sheet and A', G, F, C' in the other. Unlike other Ig domain sets, the C2-set lacks the D strand.


Pssm-ID: 409540  Cd Length: 76  Bit Score: 38.25  E-value: 5.63e-04
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 1720387172 268 LKCEASAVPAPDFEWYRDDTRINSANGLEIkstegqssltvTNVTEEHYGNYTCVAANKLGVTNASLVL 336
Cdd:cd20948    15 LSCHAASNPPAQYSWTINGTFQTSSQELFL-----------PAITENNEGTYTCSAHNSLTGKNISLVL 72
IgI_Perlecan_like cd05754
Immunoglobulin (Ig)-like domain found in Perlecan and similar proteins; member of the I-set of ...
251-337 6.50e-04

Immunoglobulin (Ig)-like domain found in Perlecan and similar proteins; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the third immunoglobulin (Ig)-like domain found in Perlecan. Perlecan is a large multi-domain heparin sulfate proteoglycan, important in tissue development and organogenesis. Perlecan can be represented as 5 major portions; its fourth major portion (domain IV) is a tandem repeat of immunoglobulin-like domains (Ig2-Ig15) which can vary in size due to alternative splicing. Perlecan binds many cellular and extracellular ligands. Its domain IV region has many binding sites. Some of these have been mapped at the level of individual Ig-like domains, including a site restricted to the Ig5 domain for heparin/sulfatide, a site restricted to the Ig3 domain for nidogen-1 and nidogen-2, a site restricted to Ig4-5 for fibronectin, and sites restricted to Ig2 and to Ig13-15 for fibulin-2. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409412  Cd Length: 85  Bit Score: 38.31  E-value: 6.50e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 251 TITESKSNEATTGRQASLKCEA-SAVPAPDFEWYRDD----TRINSANGLeikstegqssLTVTNVTEEHYGNYTCVAAN 325
Cdd:cd05754     4 TVEEPRSQEVRPGADVSFICRAkSKSPAYTLVWTRVNgtlpSRAMDFNGI----------LTIRNVQLSDAGTYVCTGSN 73
                          90
                  ....*....|..
gi 1720387172 326 KLGVTNASLVLF 337
Cdd:cd05754    74 MLDTDEATATLY 85
IgI_1_hemolin-like cd20979
First immunoglobulin (Ig)-like domain of hemolin, and similar domains; a member of the I-set ...
75-155 7.21e-04

First immunoglobulin (Ig)-like domain of hemolin, and similar domains; a member of the I-set of IgSF domains; The members here are composed of the first immunoglobulin (Ig)-like domain of hemolin and similar proteins. Hemolin, an insect immunoglobulin superfamily (IgSF) member containing four Ig-like domains, is a lipopolysaccharide-binding immune protein induced during bacterial infection. Hemolin shares significant sequence similarity with the first four Ig-like domains of the transmembrane cell adhesion molecules (CAMs) of the L1 family. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. The first Ig-like domain of hemolin is a member of the I-set Ig domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand but lack a C" strand. I-set domains are found in several cell adhesion molecules, including vascular (VCAM), intercellular (ICAM), neural (NCAM) and mucosal addressin (MADCAM) cell adhesion molecules, as well as junction adhesion molecules (JAM).


Pssm-ID: 409571  Cd Length: 91  Bit Score: 38.32  E-value: 7.21e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172  75 RQGDTAILRCVVE--DKNSKVAWLnRSGIIFaghdKWSLDPRVELEKRHALEYSlriqKVDVYDEGSYTCSVQTQHEPKT 152
Cdd:cd20979    13 REGQPTVLECVTEggDQGVKYSWL-KDGKSF----NWQEHNVAQRKDEGSLVFL----KPQASDEGQYQCFAETPAGVAS 83

                  ...
gi 1720387172 153 SQV 155
Cdd:cd20979    84 SRV 86
Ig5_Contactin cd04969
Fifth immunoglobulin (Ig) domain of contactin; The members here are composed of the fifth ...
174-237 8.38e-04

Fifth immunoglobulin (Ig) domain of contactin; The members here are composed of the fifth immunoglobulin (Ig) domain of contactins. Contactins are neural cell adhesion molecules and are comprised of six Ig domains followed by four fibronectin type III (FnIII) domains anchored to the membrane by glycosylphosphatidylinositol. The first four Ig domains form the intermolecular binding fragment, which arranges as a compact U-shaped module via contacts between Ig domains 1 and 4, and between Ig domains 2 and 3. Contactin-2 (TAG-1, axonin-1) may play a part in the neuronal processes of neurite outgrowth, axon guidance and fasciculation, and neuronal migration. This group also includes contactin-1 and contactin-5. The different contactins show different expression patterns in the central nervous system. During development and in adulthood, contactin-2 is transiently expressed in subsets of central and peripheral neurons. Contactin-5 is expressed specifically in the rat postnatal nervous system, peaking at about 3 weeks postnatal, and a lack of contactin-5 (NB-2) results in an impairment of neuronal activity in the rat auditory system. Contactin-5 is highly expressed in the adult human brain in the occipital lobe and in the amygdala. Contactin-1 is differentially expressed in tumor tissues and may, through a RhoA mechanism, facilitate invasion and metastasis of human lung adenocarcinoma.


Pssm-ID: 409358 [Multi-domain]  Cd Length: 89  Bit Score: 38.21  E-value: 8.38e-04
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 1720387172 174 VNEGSNVTLVCMANGRPEPVITWRH----LTPLGREFEGEEEYLEILGITREQSGKYECKAANEVSSA 237
Cdd:cd04969    14 AAKGGDVIIECKPKASPKPTISWSKgtelLTNSSRICILPDGSLKIKNVTKSDEGKYTCFAVNFFGKA 81
IgI_2_FGFRL1-like cd05856
Second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor_like-1 ...
177-234 8.39e-04

Second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor_like-1(FGFRL1); member of the I-set of IgSF domains; The members here are composed of the second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor like-1(FGFRL1). FGFRL1 is comprised of a signal peptide, three extracellular Ig-like modules, a transmembrane segment, and a short intracellular domain. FGFRL1 is expressed preferentially in skeletal tissues. Similar to FGF receptors, the expressed protein interacts specifically with heparin and with FGF2. FGFRL1 does not have a protein tyrosine kinase domain at its C-terminus; neither does its cytoplasmic domain appear to interact with a signaling partner. It has been suggested that FGFRL1 may not have any direct signaling function, but instead acts as a decoy receptor trapping FGFs and preventing them from binding other receptors.


Pssm-ID: 409442  Cd Length: 92  Bit Score: 38.30  E-value: 8.39e-04
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|...
gi 1720387172 177 GSNVTLVCMANGRPEPVITW-RHLTPLGREFEGEEEYL----EILGITREQSGKYECKAANEV 234
Cdd:cd05856    19 GSSVRLKCVASGNPRPDITWlKDNKPLTPPEIGENKKKkwtlSLKNLKPEDSGKYTCHVSNRA 81
IgI_4_Robo cd05726
Fourth immunoglobulin (Ig)-like domain in Robo (roundabout) receptors; member of the I-set of ...
171-245 8.90e-04

Fourth immunoglobulin (Ig)-like domain in Robo (roundabout) receptors; member of the I-set of Ig superfamily (IgSF) domains; Members here are composed the fourth immunoglobulin (Ig)-like domain in Robo (roundabout) receptors. Robo receptors play a role in the development of the central nervous system (CNS), and are receptors of Slit protein. Slit is a repellant secreted by the neural cells in the midline. Slit acts through Robo to prevent most neurons from crossing the midline from either side. Three mammalian Robo homologs (Robo1, Robo2, Robo3), and three mammalian Slit homologs (Slit-1, Slit-2, Slit-3), have been identified. Commissural axons, which cross the midline, express low levels of Robo; longitudinal axons, which avoid the midline, express high levels of Robo. Robo1, Robo2, and Robo3 are expressed by commissural neurons in the vertebrate spinal cord and Slit-1, Slit-2, and Slit-3 are expressed at the ventral midline. Robo-3 is a divergent member of the Robo family which instead of being a positive regulator of Slit responsiveness, antagonizes Slit responsiveness in precrossing axons. The Slit-Robo interaction is mediated by the second leucine-rich repeat (LRR) domain of Slit and the two N-terminal Ig domains of Robo, Ig1 and Ig2. The primary Robo binding site for Slit2 has been shown by surface plasmon resonance experiments and mutational analysis to be the Ig1 domain, while the Ig2 domain has been proposed to harbor a weak secondary binding site. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409391 [Multi-domain]  Cd Length: 98  Bit Score: 38.40  E-value: 8.90e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 171 DVTVNEGSNVTLVCMANGRPEPVITWRH------------LTPLGREFEGEEEYLEILGITREQSGKYECKAANEVSSAD 238
Cdd:cd05726     8 DQVVALGRTVTFQCETKGNPQPAIFWQKegsqnllfpyqpPQPSSRFSVSPTGDLTITNVQRSDVGYYICQALNVAGSIL 87

                  ....*...
gi 1720387172 239 VK-QVKVT 245
Cdd:cd05726    88 AKaQLEVT 95
IgC1_hNephrin_like cd05773
Immunoglobulin-like domain of human nephrin and similar proteins; member of the C1-set of Ig ...
266-336 1.00e-03

Immunoglobulin-like domain of human nephrin and similar proteins; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the immunoglobulin-like domain in human nephrin and similar proteins. Nephrin is an integral component of the slit diaphragm and is a central component of the glomerular ultrafilter. Nephrin plays a structural role and has a role in signaling. Nephrin is a transmembrane protein having a short intracellular portion, an extracellular portion comprised of eight Ig-like domains, and one fibronectin type III-like domain. The extracellular portions of nephrin from neighboring foot processes of separate podocyte cells may interact with each other, and in association with other components of the slit diaphragm form a porous molecular sieve within the slit pore. The intracellular portion of nephrin is associated with linker proteins, which connect nephrin to the actin cytoskeleton. The intracellular portion is tyrosine phosphorylated, and mediates signaling from the slit diaphragm into the podocytes.


Pssm-ID: 143250  Cd Length: 109  Bit Score: 38.37  E-value: 1.00e-03
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1720387172 266 ASLKCEASAVPAPDFEWYRDDTRINSANGLEIKSTEGQ-----SSLTVTNVTE-EHYGNYTCVAANKLGVTNASLVL 336
Cdd:cd05773    26 ANLVCQAQGVPRVQFRWAKNGVPLDLGNPRYEETTEHTgtvhtSILTIINVSAaLDYALFTCTAHNSLGEDSLDIQL 102
IgI_2_Robo cd05724
Second immunoglobulin (Ig)-like domain in Robo (roundabout) receptors; member of the I-set of ...
254-329 1.06e-03

Second immunoglobulin (Ig)-like domain in Robo (roundabout) receptors; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the second immunoglobulin (Ig)-like domain in Robo (roundabout) receptors. Robo receptors play a role in the development of the central nervous system (CNS), and are receptors of the Slit protein. Slit is a repellant secreted by the neural cells in the midline. Slit acts through Robo to prevent most neurons from crossing the midline from either side. Three mammalian Robo homologs (Robo1, Robo2, and Robo3), and three mammalian Slit homologs (Slit-1,Slit-2, Slit-3), have been identified. Commissural axons, which cross the midline, express low levels of Robo; longitudinal axons, which avoid the midline, express high levels of Robo. Robo1, Robo2, and Robo3 are expressed by commissural neurons in the vertebrate spinal cord and Slit-1, Slit-2, Slit-3 are expressed at the ventral midline. Robo-3 is a divergent member of the Robo family which instead of being a positive regulator of Slit responsiveness, antagonizes Slit responsiveness in precrossing axons. The Slit-Robo interaction is mediated by the second leucine-rich repeat (LRR) domain of Slit and the two N-terminal Ig domains of Robo, Ig1 and Ig2. The primary Robo binding site for Slit-2 has been shown by surface plasmon resonance experiments and mutational analysis to be the Ig1 domain, while the Ig2 domain has been proposed to harbor a weak secondary binding site. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409389 [Multi-domain]  Cd Length: 87  Bit Score: 37.77  E-value: 1.06e-03
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1720387172 254 ESKSNEATTGRQASLKCEAS-AVPAPDFEWYRDDTRINSANglEIKSTEGQSSLTVTNVTEEHYGNYTCVAANKLGV 329
Cdd:cd05724     3 EPSDTQVAVGEMAVLECSPPrGHPEPTVSWRKDGQPLNLDN--ERVRIVDDGNLLIAEARKSDEGTYKCVATNMVGE 77
IgI_5_KIRREL3-like cd05758
Fifth immunoglobulin (Ig)-like domain of Kirrel (kin of irregular chiasm-like) 3, and similar ...
249-328 1.23e-03

Fifth immunoglobulin (Ig)-like domain of Kirrel (kin of irregular chiasm-like) 3, and similar domains; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the fifth immunoglobulin (Ig)-like domain of Kirrel (kin of irregular chiasm-like) 3 (also known as Neph2). This protein has five Ig-like domains, one transmembrane domain, and a cytoplasmic tail. Included in this group is mammalian Kirrel (also known as Neph1), Kirrel2 (also known as Neph3), and Drosophila RST (also known as irregular chiasm C-roughest) protein. These proteins contain multiple Ig domains, have properties of cell adhesion molecules, and are important in organ development.


Pssm-ID: 319310  Cd Length: 98  Bit Score: 37.90  E-value: 1.23e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 249 PPTITESKSNEATTGRQASLKCEASAVPAPD-FEWYRDDTRINSANG----LEIKSTEGQ--SSLTVTNVTEEHYG-NYT 320
Cdd:cd05758     2 PPIITAEATQPAILGEKARLECLVFSSPPPDrIVWSWDEGFLESGSSgrfsVETFPTEPGviSVLHISGTQRSDFQtSFN 81

                  ....*...
gi 1720387172 321 CVAANKLG 328
Cdd:cd05758    82 CSAWNRFG 89
IgI_1_Titin-A168_like cd20971
First immunoglobulin-like domains A168 within the A-band segment of human cardiac titin, and ...
260-333 1.36e-03

First immunoglobulin-like domains A168 within the A-band segment of human cardiac titin, and similar domains; a member of the I-set of IgSF domains; The members here are composed of the first immunoglobulin-like domain A168 within the A-band segment of human cardiac titin. Titin is a key component in the assembly and functioning of vertebrate striated muscles. By providing connections at the level of individual microfilaments, it contributes to the fine balance of forces between the two halves of the sarcomere. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Unlike the V-set, one of the distinctive features of I-set domains is the lack of a C" strand. The structures of the titin-A168169 lacks this strand and thus it belongs to the I-set of the IgSF. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis.


Pssm-ID: 409563  Cd Length: 93  Bit Score: 37.45  E-value: 1.36e-03
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 1720387172 260 ATTGRQASLKCEASAVPAPDFEWYRDDTRI-NSANGLEIKSTEGQSSLTVTNVT-EEHYGNYTCVAANKLGvtNAS 333
Cdd:cd20971    13 VRYQSNATLVCKVTGHPKPIVKWYRQGKEIiADGLKYRIQEFKGGYHQLIIASVtDDDATVYQVRATNQGG--SVS 86
Ig6_Contactin cd04970
Sixth immunoglobulin (Ig) domain of contactin; The members here are composed of the sixth ...
249-344 1.56e-03

Sixth immunoglobulin (Ig) domain of contactin; The members here are composed of the sixth immunoglobulin (Ig) domain of contactins. Contactins are neural cell adhesion molecules and are comprised of six Ig domains followed by four fibronectin type III (FnIII) domains anchored to the membrane by glycosylphosphatidylinositol. The first four Ig domains form the intermolecular binding fragment, which arranges as a compact U-shaped module via contacts between Ig domains 1 and 4, and between Ig domains 2 and 3. Contactin-2 (TAG-1, axonin-1) may play a part in the neuronal processes of neurite outgrowth, axon guidance and fasciculation, and neuronal migration. This group also includes contactin-1 and contactin-5. The different contactins show different expression patterns in the central nervous system. During development and in adulthood, contactin-2 is transiently expressed in subsets of central and peripheral neurons. Contactin-5 is expressed specifically in the rat postnatal nervous system, peaking at about 3 weeks postnatal, and a lack of contactin-5 (NB-2) results in an impairment of neuronal activity in the rat auditory system. Contactin-5 is highly expressed in the adult human brain in the occipital lobe and in the amygdala. Contactin-1 is differentially expressed in tumor tissues and may, through a RhoA mechanism, facilitate invasion and metastasis of human lung adenocarcinoma.


Pssm-ID: 409359  Cd Length: 102  Bit Score: 37.53  E-value: 1.56e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 249 PPTITESKSN-EATTGRQASLKCEASAVPAPD--FEWYRDDTRIN-SANGLEIKSTEGQSS---LTVTNVTEEHYGNYTC 321
Cdd:cd04970     2 ATRITLAPSNaDITVGENATLQCHASHDPTLDltFTWSFNGVPIDlEKIEGHYRRRYGKDSngdLEIVNAQLKHAGRYTC 81
                          90       100
                  ....*....|....*....|...
gi 1720387172 322 VAANKLGVTNASLVLfrpgSVRG 344
Cdd:cd04970    82 TAQTVVDSDSASATL----VVRG 100
IgI_1_Palladin_C cd05893
First C-terminal immunoglobulin (Ig)-like domain of palladin; member of the I-set of Ig ...
263-328 1.59e-03

First C-terminal immunoglobulin (Ig)-like domain of palladin; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the C-terminal immunoglobulin (Ig)-like domain of palladin. Palladin belongs to the palladin-myotilin-myopalladin family. Proteins belonging to this family contain multiple Ig-like domains and function as scaffolds, modulating actin cytoskeleton. Palladin binds to alpha-actinin ezrin, vasodilator-stimulated phosphoprotein VASP, SPIN90 (also known as DIP or mDia interacting protein), and Src. Palladin also binds F-actin directly, via its Ig3 domain. Palladin is expressed as several alternatively spliced isoforms, having various combinations of Ig-like domains, in a cell-type-specific manner. It has been suggested that palladin's different Ig-like domains may be specialized for distinct functions. This group belongs to the I-set of IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409474  Cd Length: 92  Bit Score: 37.38  E-value: 1.59e-03
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 1720387172 263 GRQASLKCEASAVPAPDFEWYRDDTRIN--SANGLEIKSTEGQSSLTVTNVTEEHYGNYTCVAANKLG 328
Cdd:cd05893    15 GMPVTFTCRVAGNPKPKIYWFKDGKQISpkSDHYTIQRDLDGTCSLHTTASTLDDDGNYTIMAANPQG 82
IgI_3_hemolin-like cd20977
Third immunoglobulin (Ig)-like domain of hemolin, and similar domains; a member of the I-set ...
249-330 1.65e-03

Third immunoglobulin (Ig)-like domain of hemolin, and similar domains; a member of the I-set of IgSF domains; The members here are composed of the third immunoglobulin (Ig)-like domain of hemolin and similar proteins. Hemolin, an insect immunoglobulin superfamily (IgSF) member containing four Ig-like domains, is a lipopolysaccharide-binding immune protein induced during bacterial infection. Hemolin shares significant sequence similarity with the first four Ig-like domains of the transmembrane cell adhesion molecules (CAMs) of the L1 family. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. The third Ig-like domain of hemolin is a member of the I-set Ig domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand but lack a C" strand. I-set domains are found in several cell adhesion molecules, including vascular (VCAM), intercellular (ICAM), neural (NCAM) and mucosal addressin (MADCAM) cell adhesion molecules, as well as junction adhesion molecules (JAM).


Pssm-ID: 409569  Cd Length: 93  Bit Score: 37.37  E-value: 1.65e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 249 PPTITESKSNEATTGRQASLKCEASAVPAPDFEWYRDDTRINSaNGLEIKSTEGQSS---LTVTNVTEEHYGNYTCVAAN 325
Cdd:cd20977     1 PVPQYVSKDMMAKAGDVTMIYCMYGSNPTAHPNYFKNGKDVNG-NPEDRITRHNRTSgkrLLFKTTLPEDEGVYTCEVDN 79

                  ....*
gi 1720387172 326 KLGVT 330
Cdd:cd20977    80 GVGKP 84
Ig0_BSG1 cd20940
Immunoglobulin-like Ig0 domain of basigin-1 (BSG1) and similar proteins; The members here are ...
257-325 1.81e-03

Immunoglobulin-like Ig0 domain of basigin-1 (BSG1) and similar proteins; The members here are composed of the immunoglobulin (Ig) domain of the collagenase stimulatory factor, basigin-1 (BSG1; also known as Cluster of Differentiation 147 (CD147) and Extracellular Matrix Metalloproteinase Inducer (EMMPRIN)) and similar proteins. CD147 is a transmembrane glycoprotein that belongs to the immunoglobulin superfamily. It is expressed in nearly all cells including platelets and fibroblasts and is involved in inflammatory diseases, and cancer progression. CD147 is highly expressed in several cancers and used as a prognostic marker. The two primary isoforms of CD147 that are related to cancer progression have been identified: CD147 Ig1-Ig2 (also called Basigin-2) that is ubiquitously expressed in most tissues and CD147 Ig0-Ig1-Ig2 (also called Basigin-1) that is retinal specific and implicated in retinoblastoma. Studies showed that CD147 Ig0 domain is a potent stimulator of interleukin-6 and suggest that the CD147 Ig0 dimer is the functional unit required for activity.


Pssm-ID: 409534  Cd Length: 116  Bit Score: 37.64  E-value: 1.81e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 257 SNEATTGRQASLKCEASAVPAPDFEWY-----RDDTRINSANG-----LEIKSTEGQ---SSLTVTNVTEEHYGNYTCVA 323
Cdd:cd20940     9 SQQRLVGDSVELHCEAVGSPIPEIQWWfegqePNEICSQLWDGarldrVHINATYHQhatSTISIDNLTEEDTGTYECRA 88

                  ..
gi 1720387172 324 AN 325
Cdd:cd20940    89 SN 90
IgI_2_Axl_Tyro3_like cd05749
Second immunoglobulin (Ig)-like domain of Axl/Tyro3 family receptor tyrosine kinases (RTKs); ...
171-232 1.85e-03

Second immunoglobulin (Ig)-like domain of Axl/Tyro3 family receptor tyrosine kinases (RTKs); member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the second immunoglobulin (Ig)-like domain in the Axl/Tyro3 family of receptor tyrosine kinases (RTKs). This family includes Axl (also known as Ark, Ufo, and Tyro7), Tyro3 (also known as Sky, Rse, Brt, Dtk, and Tif), and Mer (also known as Nyk, c-Eyk, and Tyro12). Axl/Tyro3 family receptors have an extracellular portion with two Ig-like domains followed by two fibronectin-types III (FNIII) domains, a membrane-spanning single helix, and a cytoplasmic tyrosine kinase domain. Axl, Tyro3, and Mer are widely expressed in adult tissues, though they show higher expression in the brain, lymphatic and vascular systems, and testis. Axl, Tyro3, and Mer bind the vitamin K dependent protein Gas6 with high affinity, and in doing so activate their tyrosine kinase activity. Axl/Gas6 signaling may play a part in cell adhesion processes, prevention of apoptosis, and cell proliferation.


Pssm-ID: 409407  Cd Length: 82  Bit Score: 37.06  E-value: 1.85e-03
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 1720387172 171 DVTVNEGSNVTLVCMANGRPEPV--ITWRHLTPLGREFEGEEEYLEILGITreQSGKYECKAAN 232
Cdd:cd05749     8 DLAVTANTPFNLTCQAVGPPEPVeiLWWQGGSPLGGPPAPSPSVLNVPGLN--ETTKFSCEAHN 69
IgV_SIRP cd16097
Immunoglobulin (Ig)-like variable (V) domain of the Signal-Regulatory Protein (SIRP); The ...
72-142 2.62e-03

Immunoglobulin (Ig)-like variable (V) domain of the Signal-Regulatory Protein (SIRP); The members here are composed of the immunoglobulin (Ig)-like domain of the Signal-Regulatory Protein (SIRP). The SIRPs belong to the "paired receptors" class of membrane proteins that comprise several genes coding for proteins with similar extracellular regions, but very different transmembrane/cytoplasmic regions with different (activating or inhibitory) signaling potentials. They are commonly on NK cells, but are also on many myeloid cells. Their extracellular region contains three immunoglobulin superfamily domains, a single V-set, and two C1-set IgSF domains. Their cytoplasmic tails that contain either ITIMs or transmembrane regions have positively charged residues that allow an association with adaptor proteins, such as DAP12/KARAP, containing ITAMs. There are 3 distinct SIRP members: alpha, beta, and gamma. SIRP alpha (also known as CD172a or SRC homology 2 domain-containing protein tyrosine phosphatase substrate 1/Shps-1) is a membrane receptor that interacts with a ligand CD47 expressed on many cells and gives an inhibitory signal through immunoreceptor tyrosine-based inhibition motifs in the cytoplasmic region that interact with phosphatases SHP-1 and SHP-2. SIRP beta has a short cytoplasmic region and associates with a transmembrane adapter protein DAP12 containing immunoreceptor tyrosine-based activation motifs to give an activating signal. SIRP gamma contains a very short cytoplasmic region lacking obvious signaling motifs, but also binds CD47 with much less affinity. Members of this group contain standard Ig superfamily V-set AGFCC'C"/DEB domain topology.


Pssm-ID: 409516  Cd Length: 111  Bit Score: 37.15  E-value: 2.62e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172  72 ITVRQGDTAILRCVVEDKN--SKVAWLNRSG----IIFagHDKWSLDPRV----ELEKRHALEYSLRIQKVDVYDEGSYT 141
Cdd:cd16097     9 VSVAAGESATLHCTVTSLIpvGPIQWFRGAGpgreLIY--NQKEGHFPRVttvsDLTKRNNMDFSIRISNITPADAGTYY 86

                  .
gi 1720387172 142 C 142
Cdd:cd16097    87 C 87
IgI_2_KIRREL3-like cd05759
Second immunoglobulin (Ig)-like domain of Kirrel (kin of irregular chiasm-like) 3, and similar ...
250-326 3.01e-03

Second immunoglobulin (Ig)-like domain of Kirrel (kin of irregular chiasm-like) 3, and similar domains; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the second immunoglobulin (Ig)-like domain of Kirrel (kin of irregular chiasm-like) 3 (also known as Neph2). This protein has five Ig-like domains, one transmembrane domain, and a cytoplasmic tail. Included in this group is mammalian Kirrel (Neph1), Kirrel2 (Neph3), and Drosophila RST (irregular chiasm C-roughest) protein. These proteins contain multiple Ig domains, have properties of cell adhesion molecules, and are important in organ development.


Pssm-ID: 409416  Cd Length: 98  Bit Score: 36.66  E-value: 3.01e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 250 PTITESKSNEATTGRQASLKCEAS-AVPAPDFEWYRDDTRINSAngleIKSTE---------GQSSLTVTNVTEEHYGNY 319
Cdd:cd05759     2 PVIEGGPVISLQAGVPYNLTCRARgAKPAAEIIWFRDGEQLEGA----VYSKEllkdgkretTVSTLLITPSDLDTGRTF 77

                  ....*..
gi 1720387172 320 TCVAANK 326
Cdd:cd05759    78 TCRARNE 84
Ig_Perlecan_like cd05743
Immunoglobulin (Ig)-like domain of the human basement membrane heparan sulfate proteoglycan ...
177-232 3.79e-03

Immunoglobulin (Ig)-like domain of the human basement membrane heparan sulfate proteoglycan perlecan and similar proteins; The members here are composed of the immunoglobulin (Ig)-like domain of the human basement membrane heparan sulfate proteoglycan perlecan, also known as HSPG2, and similar proteins. Perlecan consists of five domains: domain I has three putative heparan sulfate attachment sites, domain II has four LDL receptor-like repeats, and one Ig-like repeat, domain III resembles the short arm of laminin chains, domain IV has multiple Ig-like repeats (21 repeats in human perlecan), and domain V resembles the globular G domain of the laminin A chain and internal repeats of EGF. Perlecan may participate in a variety of biological functions including cell binding, LDL-metabolism, basement membrane assembly and selective permeability, calcium binding, and growth- and neurite-promoting activities.


Pssm-ID: 143220  Cd Length: 78  Bit Score: 35.93  E-value: 3.79e-03
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|...
gi 1720387172 177 GSNVTLVCMANGRPEPVITWR----HLTPLGREFEGEEEYLEILGI--TREQ-SGKYECKAAN 232
Cdd:cd05743     1 GETVEFTCVATGVPTPIINWRlnwgHVPDSARVSITSEGGYGTLTIrdVKESdQGAYTCEAIN 63
Ig_C5_MyBP-C cd05894
C5 immunoglobulin (Ig) domain of cardiac myosin binding protein C (MyBP-C); The members here ...
263-334 4.02e-03

C5 immunoglobulin (Ig) domain of cardiac myosin binding protein C (MyBP-C); The members here are composed of the C5 immunoglobulin (Ig) domain of cardiac myosin binding protein C (MyBP-C). MyBP-C consists of repeated domains, Ig and fibronectin type 3, and various linkers. Three isoforms of MYBP-C exist: slow-skeletal (ssMyBP-C), fast-skeletal (fsMyBP-C), and cardiac (cMyBP-C). cMYBP-C has insertions between and inside domains and an additional cardiac-specific Ig domain at the N-terminus. For cMYBP_C an interaction has been demonstrated between this C5 domain and the Ig C8 domain.


Pssm-ID: 409475  Cd Length: 86  Bit Score: 35.97  E-value: 4.02e-03
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|...
gi 1720387172 263 GRQASLKCEASAVPAPDFEWYRDDTRINSANG-LEIKSTEGQSSLTVTNVTEEHYGNYTCVAANKLGVTNASL 334
Cdd:cd05894    10 GNKLRLDVPISGEPAPTVTWSRGDKAFTATEGrVRVESYKDLSSFVIEGAEREDEGVYTITVTNPVGEDHASL 82
IgC2_CEACAM5-like cd20948
Fifth immunoglobulin (Ig)-like domain of the carcinoembryonic antigen (CEA) related cell ...
169-246 4.34e-03

Fifth immunoglobulin (Ig)-like domain of the carcinoembryonic antigen (CEA) related cell adhesion molecule 5 (CEACAM5) and similar domains; member of the C2-set IgSF domains; The members here are composed of the fifth immunoglobulin (Ig)-like domain of the carcinoembryonic antigen (CEA) related cell adhesion molecule 5 (CEACAM5) and similar domains. The CEA family is a group of anchored or secreted glycoproteins, expressed by epithelial cells, leukocytes, endothelial cells and placenta. The CEA family is divided into the CEACAM and pregnancy-specific glycoprotein (PSG) subfamilies. Carcinoembryonic antigen-related cell adhesion molecule 5 (CEACAM5), also known as CD66e (Cluster of Differentiation 66e), is a cell surface glycoprotein that plays a role in cell adhesion, intracellular signaling and tumor progression. Diseases associated with CEACAM5 include lung cancer and rectum cancer. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. This group belongs to the C2-set of IgSF domains, having A, B, and E strands in one beta-sheet and A', G, F, C' in the other. Unlike other Ig domain sets, the C2-set lacks the D strand.


Pssm-ID: 409540  Cd Length: 76  Bit Score: 35.55  E-value: 4.34e-03
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 1720387172 169 SSDVTVNEGSNVTLVCMANGRPEPVITWRhltpLGREFEGEEEYLEILGITREQSGKYECKAANEVSSADVKQVKVTV 246
Cdd:cd20948     2 PSDTYYLSGENLNLSCHAASNPPAQYSWT----INGTFQTSSQELFLPAITENNEGTYTCSAHNSLTGKNISLVLSVT 75
IgC2_CD22_d3 cd20937
Third immunoglobulin domain in Cluster of Differentiation (CD) 22; member of the Constant 2 ...
164-248 4.65e-03

Third immunoglobulin domain in Cluster of Differentiation (CD) 22; member of the Constant 2 (C2)-set of IgSF domains; The members here are composed of the third immunoglobulin domain in Cluster of Differentiation (CD) 22 (also known as Siglec-2). CD22, a sialic-acid binding immunoglobulin type-lectin (Siglec) family member, is an inhibitory co-receptor of the B-cell receptor (BCR). The inhibitory function of CD22 and its restricted expression on B cells makes CD22 an attractive target against dysregulated B cells that cause autoimmune diseases and B-cell-derived cancers. CD22 plays a vital role in establishing a baseline level of B-cell inhibition, and thus is an important determinant of homeostasis in humoral immunity. Siglecs are primarily expressed on immune cells and recognize sialic acid-containing glycan ligands. Siglecs are organized as an extracellular module composed of Ig-like domains (an N-terminal variable set of Ig-like carbohydrate recognition domains, and 1 to 16 constant Ig-like domains), followed by transmembrane and short cytoplasmic domains. Human Siglecs are classified into two subgroups, one subgroup is comprised of sialoadhesin (Siglec-1), CD22 (Siglec-2), and MAG (Siglec-4, myelin-associated glycoprotein), the other subgroup is comprised of CD33-related Siglecs which include CD33 (Siglec-3) and human Siglecs 5-11. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. This group belongs to the C2-set of IgSF domains, having A, B, and E strands in one beta-sheet and A', G, F, C' in the other. Unlike other Ig domain sets, the C2-set lacks the D strand.


Pssm-ID: 409531  Cd Length: 88  Bit Score: 35.93  E-value: 4.65e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 164 KISNISSDVTVNEGSNVTLVC-MANGRPE-PVITW-RHLTPLGREFEGEEEYLEIlgiTREQSGKYECKAANEVSSADVK 240
Cdd:cd20937     4 EIKVTPSDAIVREGDSVTMTCeVSSSNPEyTTVSWlKDGTSLKKQNTFTLNLREV---TKDQSGKYCCQVSNDVGPGRSE 80

                  ....*...
gi 1720387172 241 QVKVTVNY 248
Cdd:cd20937    81 EVFLQVQY 88
IgI_Twitchin_like cd20949
C-terminal immunoglobulin-like domain of the myosin-associated giant protein kinase Twitchin, ...
172-238 4.77e-03

C-terminal immunoglobulin-like domain of the myosin-associated giant protein kinase Twitchin, and similar domains; member of the I-set IgSF domains; The members here are composed of the C-terminal immunoglobulin-like domain of the myosin-associated giant protein kinase Twitchin and similar proteins, including Caenorhabditis elegans and Aplysia californica Twitchin, Drosophila melanogaster Projectin, and similar proteins. These are very large muscle proteins containing multiple immunoglobulin (Ig)-like and fibronectin type III (FN3) domains and a single kinase domain near the C-terminus. In humans these proteins are called Titin. The Ig superfamily (IgSF) is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. The Ig-like domain of the Twitchin is a member of the I-set IgSF domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand but lack a C" strand. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the hemolymph protein hemolin, the muscle proteins (titin, telokin, and twitchin), the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D.


Pssm-ID: 409541 [Multi-domain]  Cd Length: 89  Bit Score: 36.15  E-value: 4.77e-03
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....
gi 1720387172 172 VTVNEGSNVTLVCMANGRPEPVITW-------RHLTPLGREFEGEEEYLEILGITREQSGKYECKAANEVSSAD 238
Cdd:cd20949     9 TTVKEGQSATILCEVKGEPQPNVTWhfngqpiSASVADMSKYRILADGLLINKVTQDDTGEYTCRAYQVNSIAS 82
ig pfam00047
Immunoglobulin domain; Members of the immunoglobulin superfamily are found in hundreds of ...
168-240 4.82e-03

Immunoglobulin domain; Members of the immunoglobulin superfamily are found in hundreds of proteins of different functions. Examples include antibodies, the giant muscle kinase titin and receptor tyrosine kinases. Immunoglobulin-like domains may be involved in protein-protein and protein-ligand interactions.


Pssm-ID: 395002  Cd Length: 86  Bit Score: 36.02  E-value: 4.82e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 168 ISSDVTVNEGSNVTLVCMAN-GRPEPVITWRH---LTPLGREFEGEEEYLEILGI-----TREQSGKYECKAANEVSSAD 238
Cdd:pfam00047   2 APPTVTVLEGDSATLTCSAStGSPGPDVTWSKeggTLIESLKVKHDNGRTTQSSLlisnvTKEDAGTYTCVVNNPGGSAT 81

                  ..
gi 1720387172 239 VK 240
Cdd:pfam00047  82 LS 83
IgI_2_Dscam cd20953
Second immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar domains; ...
250-336 5.86e-03

Second immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar domains; a member of the I-set of IgSF domains; The members here are composed of the second immunoglobulin domain of the Drosophila melanogaster Down syndrome cell adhesion molecule (DSCAM) protein and similar proteins. DSCAM is a cell adhesion molecule that plays critical roles in neural development, including axon guidance and branching, axon target recognition, self-avoidance and synaptic formation. DSCAM belongs to the immunoglobulin superfamily and contributes to defects in the central nervous system in Down syndrome patients. Vertebrate DSCAMs differ from Drosophila Dscam1 in that they lack the extensive alternative splicing that occurs in the insect gene. Drosophila melanogaster Dscam has 38,016 isoforms generated by the alternative splicing of four variable exon clusters, which allows every neuron in the fly to display a distinctive set of Dscam proteins on its cell surface. Drosophila Dscam1 is a cell-surface protein that plays important roles in neural development and axon tiling of neurons. It is shown that thousands of isoforms bind themselves through specific homophilic (self-binding) interactions, a process which mediates cellular self-recognition. Drosophila Dscam2 is also alternatively spliced and plays a key role in the development of two visual system neurons, monopolar cells L1 and L2. This group is a member of the I-set Ig domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set Ig domains, members of the I-set have a discontinuous A strand but lack a C" strand.


Pssm-ID: 409545  Cd Length: 95  Bit Score: 35.98  E-value: 5.86e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720387172 250 PTITESKSNEATTGRQASLKCEASAVPAPDFEWYR--DDTRINSANGLEIKSTEGQSSLTVTNVTEEHYGNYTCVAANKL 327
Cdd:cd20953     5 PGLSKSQPLTVSSASSIALLCPAQGYPAPSFRWYKfiEGTTRKQAVVLNDRVKQVSGTLIIKDAVVEDSGKYLCVVNNSV 84

                  ....*....
gi 1720387172 328 GVTNASLVL 336
Cdd:cd20953    85 GGESVETVL 93
IgV_B7-H3 cd20934
Immunoglobulin Variable (IgV) domain of B7-H3, a member of the B7 family of immune checkpoint ...
126-147 6.69e-03

Immunoglobulin Variable (IgV) domain of B7-H3, a member of the B7 family of immune checkpoint molecules; The members here are composed of the immunoglobulin variable (IgV) domain of B7-H3 also known as CD276), a member of the B7 family of immune checkpoint molecules. B7-H3 is an important immune checkpoint member of the B7 family and shares homology with other B7 ligands such as programmed death ligand 1 (PD-L1). The B7 family molecules interact with CD28 on T-cells to provide co-stimulatory signals that regulate T-cell activation and T-helper cell differentiation. Although B7-H3 has been shown to have both co-stimulatory and co-inhibitory effects on T-cell responses, the most current studies describe B7-H3 as a T cell inhibitor that promotes tumor aggressiveness and proliferation. Moreover, B7-H3 is highly overexpressed on a wide range of human solid cancers and promotes tumor growth, metastasis, and drug resistance. Thus, B7-H3 expression in tumors often correlates with both negative prognosis and poor clinical outcome in cancer patients. B7-H3 protein contains a predicted signal peptide, V- and C-like Ig domains (IgV and IgC), a transmembrane region, and an intracellular tail.


Pssm-ID: 409528  Cd Length: 115  Bit Score: 36.04  E-value: 6.69e-03
                          10        20
                  ....*....|....*....|..
gi 1720387172 126 SLRIQKVDVYDEGSYTCSVQTQ 147
Cdd:cd20934    79 SLRLQRVRVADEGSYTCFVSVQ 100
IgI_Myomesin_like_C cd05737
C-terminal immunoglobulin (Ig)-like domain of myomesin and M-protein; member of the I-set of ...
263-328 7.58e-03

C-terminal immunoglobulin (Ig)-like domain of myomesin and M-protein; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the C-terminal immunoglobulin (Ig)-like domain of myomesin and M-protein (also known as myomesin-2). Myomesin and M-protein are both structural proteins localized to the M-band, a transverse structure in the center of the sarcomere, and are candidates for M-band bridges. Both proteins are modular, consisting mainly of repetitive Ig-like and fibronectin type III (FnIII) domains. Myomesin is expressed in all types of vertebrate striated muscle; M-protein has a muscle-type specific expression pattern. Myomesin is present in both slow and fast fibers; M-protein is present only in fast fibers. It has been suggested that myomesin acts as a molecular spring with alternative splicing as a means of modifying its elasticity.


Pssm-ID: 319300  Cd Length: 92  Bit Score: 35.64  E-value: 7.58e-03
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1720387172 263 GRQASLKCEASAVPAPDFEWYRDDTRINSANGLEIKSTEGQS-SLTVTNVTEEHYGNYTCVAANKLG 328
Cdd:cd05737    16 GKTLNLTCNVWGDPPPEVSWLKNDQALAFLDHCNLKVEAGRTvYFTINGVSSEDSGKYGLVVKNKYG 82
Ig_3 pfam13927
Immunoglobulin domain; This family contains immunoglobulin-like domains.
71-144 7.96e-03

Immunoglobulin domain; This family contains immunoglobulin-like domains.


Pssm-ID: 464046 [Multi-domain]  Cd Length: 78  Bit Score: 34.85  E-value: 7.96e-03
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 1720387172  71 NITVRQGDTAILRCVVEDKNS-KVAWLnRSGiifaghdKWSLDPRVELEKRHALEYSLRIQKVDVYDEGSYTCSV 144
Cdd:pfam13927  10 SVTVREGETVTLTCEATGSPPpTITWY-KNG-------EPISSGSTRSRSLSGSNSTLTISNVTRSDAGTYTCVA 76
IgI_NCAM-1 cd05869
Immunoglobulin (Ig)-like I-set domain of Neural Cell Adhesion Molecule 1 (NCAM-1); The members ...
161-197 9.08e-03

Immunoglobulin (Ig)-like I-set domain of Neural Cell Adhesion Molecule 1 (NCAM-1); The members here are composed of the fourth Ig domain of Neural Cell Adhesion Molecule 1(NCAM-1). NCAM plays important roles in the development and regeneration of the central nervous system, in synaptogenesis and neural migration. NCAM mediates cell-cell and cell-substratum recognition and adhesion via homophilic (NCAM-NCAM) and heterophilic (NCAM-non-NCAM) interactions. NCAM is expressed as three major isoforms having different intracellular extensions. The extracellular portion of NCAM has five N-terminal Ig-like domains and two fibronectin type III domains. The double zipper adhesion complex model for NCAM homophilic binding involves Ig1, Ig2, and Ig3. By this model, Ig1 and Ig2 mediate dimerization of NCAM molecules situated on the same cell surface (cis interactions), and Ig3 domains mediate interactions between NCAM molecules expressed on the surface of opposing cells (trans interactions), through binding to the Ig1 and Ig2 domains. The adhesive ability of NCAM is modulated by the addition of polysialic acid chains to the fifth Ig-like domain. One of the unique features of I-set domains is the lack of a C" strand. The structures of this group show that the Ig domain lacks this strand and thus is a member of the I-set of Ig domains.


Pssm-ID: 143277 [Multi-domain]  Cd Length: 97  Bit Score: 35.34  E-value: 9.08e-03
                          10        20        30
                  ....*....|....*....|....*....|....*..
gi 1720387172 161 VPPKISNISSDVTVNEGSNVTLVCMANGRPEPVITWR 197
Cdd:cd05869     1 AKPKITYVENQTAMELEEQITLTCEASGDPIPSITWR 37
 
Blast search parameters
Data Source: Precalculated data, version = cdd.v.3.21
Preset Options:Database: CDSEARCH/cdd   Low complexity filter: no  Composition Based Adjustment: yes   E-value threshold: 0.01

References:

  • Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
  • Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
  • Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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