FERM domain C-lobe of Protein 4.1 family; The protein 4.1 family includes four well-defined members: erythroid protein 4.1 (4.1R), the best known and characterized member, 4.1G (general), 4.1N (neuronal), and 4.1 B (brain). The less well understood 4.1O/FRMD3 is not a true member of this family and is not included in this hierarchy. Besides three highly conserved domains, FERM, SAB (spectrin and actin binding domain) and CTD (C-terminal domain), the proteins from this family contain several unique domains: U1, U2 and U3. FERM domains like other members of the FERM domain superfamily have a cloverleaf architecture with three distinct lobes: (1) FERM_N (A-lobe or F1); (2) FERM_M (B-lobe, or F2); and (3) FERM_C (C-lobe or F3). The C-lobe/F3 within the FERM domain is part of the PH domain family. The brain is a particularly rich source of protein 4.1 isoforms. The various 4.1R, 4.1G, 4.1N, and 4.1B mRNAs are all expressed in distinct patterns within the brain. It is likely that 4.1 proteins play important functional roles in the brain including motor coordination and spatial learning, postmitotic differentiation, and synaptic architecture and function. In addition they are found in nonerythroid, nonneuronal cells where they may play a general structural role in nuclear architecture and/or may interact with splicing factors. The FERM C domain is the third structural domain within the FERM domain. The FERM domain is found in the cytoskeletal-associated proteins such as ezrin, moesin, radixin, 4.1R, and merlin. These proteins provide a link between the membrane and cytoskeleton and are involved in signal transduction pathways. The FERM domain is also found in protein tyrosine phosphatases (PTPs) , the tyrosine kinases FAK and JAK, in addition to other proteins involved in signaling. This domain is structurally similar to the PH and PTB domains and consequently is capable of binding to both peptides and phospholipids at different sites.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664  187 YGVDLHHAKligrffhcfspakgeDSEGVEIMLGVCSSGLLIYRDRLRINRFAWPKVLKISYKRNNFYIKIRPGEFEQFE 266
Cdd:cd13184      1 YGVDLHPAK---------------DSEGVDIMLGVCSSGLLVYRDRLRINRFAWPKVLKISYKRNNFYIKIRPGEFEQYE 65

                           90       100
                   ....*....|....*....|....*....
gi 1207165664  267 STIGFKLPNHRAAKRLWKVCVEHHTFFRL 295
Cdd:cd13184     66 TTIGFKLPNHRAAKRLWKVCVEHHTFFRL 94

4.1 protein C-terminal domain (CTD); At the C-terminus of all known 4.1 proteins is a sequence domain unique to these proteins, known as the C-terminal domain (CTD). Mammalian CTDs are associated with a growing number of protein-protein interactions, although such activities have yet to be associated with invertebrate CTDs. Mammalian CTDs are generally defined by sequence alignment as encoded by exons 18-21. Comparison of known vertebrate 4.1 proteins with invertebrate 4.1 proteins indicates that mammalian 4.1 exon 19 represents a vertebrate adaptation that extends the sequence of the CTD with a Ser/Thr-rich sequence. The CTD was first described as a 22/24-kDa domain by chymotryptic digestion of erythrocyte 4.1 (4.1R). CTD is thought to represent an independent folding structure which has gained function since the divergence of vertebrates from invertebrates.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664  975 DTPVIQTEIKTITYEALQAETDGDADPGVLMSAQTITSETTSTTTTTHITKTVKGGISETRIEKRIVISGDADIDHDEAL 1054
Cdd:pfam05902    2 EVPIVHTETKTITYESSQVDGRGDSDPGVLVSAQTITSETQSTTTTTHITKTVKGGISETRIEKRIVITGDADIDHDQAL 81

                           90       100
                   ....*....|....*....|....*.
gi 1207165664 1055 AQAIKEAKEQHPDMSVTKVVVHKETE 1080
Cdd:pfam05902   82 AQAIKEAKEQHPDMSVTKVVVHKETE 107

SAB domain; This presumed domain is found in proteins containing FERM domains pfam00373. This domain is found to bind to both spectrin and actin, hence the name SAB (Spectrin and Actin Binding) domain.

                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1207165664  475 KTKEADLTPDEQLKPQTNISELKRTFLEGGAEPAGLTEWEKRLSS-SPLR 523
Cdd:pfam04382    1 MLEDLDKTQEDLLKHQASISELKRTFMEPNPEDLGPSEWEKRLSSnSPVR 50

FERM domain C-lobe of Protein 4.1 family; The protein 4.1 family includes four well-defined members: erythroid protein 4.1 (4.1R), the best known and characterized member, 4.1G (general), 4.1N (neuronal), and 4.1 B (brain). The less well understood 4.1O/FRMD3 is not a true member of this family and is not included in this hierarchy. Besides three highly conserved domains, FERM, SAB (spectrin and actin binding domain) and CTD (C-terminal domain), the proteins from this family contain several unique domains: U1, U2 and U3. FERM domains like other members of the FERM domain superfamily have a cloverleaf architecture with three distinct lobes: (1) FERM_N (A-lobe or F1); (2) FERM_M (B-lobe, or F2); and (3) FERM_C (C-lobe or F3). The C-lobe/F3 within the FERM domain is part of the PH domain family. The brain is a particularly rich source of protein 4.1 isoforms. The various 4.1R, 4.1G, 4.1N, and 4.1B mRNAs are all expressed in distinct patterns within the brain. It is likely that 4.1 proteins play important functional roles in the brain including motor coordination and spatial learning, postmitotic differentiation, and synaptic architecture and function. In addition they are found in nonerythroid, nonneuronal cells where they may play a general structural role in nuclear architecture and/or may interact with splicing factors. The FERM C domain is the third structural domain within the FERM domain. The FERM domain is found in the cytoskeletal-associated proteins such as ezrin, moesin, radixin, 4.1R, and merlin. These proteins provide a link between the membrane and cytoskeleton and are involved in signal transduction pathways. The FERM domain is also found in protein tyrosine phosphatases (PTPs) , the tyrosine kinases FAK and JAK, in addition to other proteins involved in signaling. This domain is structurally similar to the PH and PTB domains and consequently is capable of binding to both peptides and phospholipids at different sites.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664  187 YGVDLHHAKligrffhcfspakgeDSEGVEIMLGVCSSGLLIYRDRLRINRFAWPKVLKISYKRNNFYIKIRPGEFEQFE 266
Cdd:cd13184      1 YGVDLHPAK---------------DSEGVDIMLGVCSSGLLVYRDRLRINRFAWPKVLKISYKRNNFYIKIRPGEFEQYE 65

                           90       100
                   ....*....|....*....|....*....
gi 1207165664  267 STIGFKLPNHRAAKRLWKVCVEHHTFFRL 295
Cdd:cd13184     66 TTIGFKLPNHRAAKRLWKVCVEHHTFFRL 94

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in erythrocyte membrane protein band 4.1-like protein 3 (EPB41L3) and similar proteins; EPB41L3, also termed 4.1B, or differentially expressed in adenocarcinoma of the lung protein 1 (DAL-1), belongs to the skeletal protein 4.1 family that is involved in cellular processes such as cell adhesion, migration and signaling. EPB41L3 is a tumor suppressor that has been implicated in a variety of meningiomas and carcinomas. EPB41L3 contains a FERM domain, a spectrin and actin binding (SAB) domain, and a C-terminal domain. The FERM domain is made up of three sub-domains, F1, F2, and F3. This family corresponds to the F1 sub-domain, which is also called the N-terminal ubiquitin-like structural domain of the FERM domain (FERM_N).

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664    1 MQCKITLLDGSDYTCVVEKRDKGQVLFDKVCEHLNLLEKDYFGITFRDVENQKNWLDPAKDMKKQIRGVAWNFSFNVKFY 80
Cdd:cd17203      2 MQCKVTLLDGSEYTCEVEKRSKGQVLFDKVCEHLNLLEKDYFGLTYRDSENQKNWLDPAKEIKKQIRSGAWQFSFNVKFY 81

                   ...
gi 1207165664   81 PPE 83
Cdd:cd17203     82 PPD 84

FERM central domain; This domain is the central structural domain of the FERM domain.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664   82 PEPALLSEDITRYYLCLQLRDDISSGRLPCSFATHTVLGSYTVQSELGDHDPEECGSEYTSEFRFAPQQ------TKEME 155
Cdd:pfam00373    1 DLELLLQDEVTRHLLYLQAKDDILEGRLPCSEEEALLLAALQLQAEFGDYQPSSHTSEYLSLESFLPKQllrkmkSKELE 80

                           90       100       110
                   ....*....|....*....|....*....|....*..
gi 1207165664  156 EKIIDLHKNYKGMTPAEAEMHFLENVKKLSMYGVDLH 192
Cdd:pfam00373   81 KRVLEAHKNLRGLSAEEAKLKYLQIAQSLPTYGVEFF 117

FERM adjacent (FA); This region is found adjacent to Band 4.1 / FERM domains (pfam00373) in a subset of FERM containing protein. The region has been hypothesized to play a role in regulatory adaptation, based on similarity to other protein kinase substrates.

                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....
gi 1207165664  304 KFLTLGSKFRYSGRTQAQTRRASSQIVRPAPYFQRSSSKRYTMS 347
Cdd:pfam08736    1 KFFSLGSKFRYSGRTQKQTVEDSSEILRPQPEFERSPSKRYPSR 44

DNA polymerase III subunits gamma and tau; Validated

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664  515 KRLSSSPLRSPRREEPPMIEPLELDEI------KQEVVVETQEVAETQ------EVAAALDTQENNRKVDEESDGWViiN 582
Cdd:PRK08691   354 RMLAFAPLAAASCDANAVIENTELQSPsaqtaeKETAAKKPQPRPEAEtaqtpvQTASAAAMPSEGKTAGPVSNQEN--N 431

                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664  583 KVPPFEAHKAPVETRDKSSIQPEIIVQDASPPAEPMKEFPEDVPA---EKMDPEKTTKDEAPPEKTTVEEALPEKTTVDE 659
Cdd:PRK08691   432 DVPPWEDAPDEAQTAAGTAQTSAKSIQTASEAETPPENQVSKNKAadnETDAPLSEVPSENPIQATPNDEAVETETFAHE 511

                          170       180       190
                   ....*....|....*....|....*....|..
gi 1207165664  660 ALPEKTTVDETPLEKTIEKTTVDETPPEKIHS 691
Cdd:PRK08691   512 APAEPFYGYGFPDNDCPPEDGAEIPPPDWEHA 543

FERM domain C-lobe of Protein 4.1 family; The protein 4.1 family includes four well-defined members: erythroid protein 4.1 (4.1R), the best known and characterized member, 4.1G (general), 4.1N (neuronal), and 4.1 B (brain). The less well understood 4.1O/FRMD3 is not a true member of this family and is not included in this hierarchy. Besides three highly conserved domains, FERM, SAB (spectrin and actin binding domain) and CTD (C-terminal domain), the proteins from this family contain several unique domains: U1, U2 and U3. FERM domains like other members of the FERM domain superfamily have a cloverleaf architecture with three distinct lobes: (1) FERM_N (A-lobe or F1); (2) FERM_M (B-lobe, or F2); and (3) FERM_C (C-lobe or F3). The C-lobe/F3 within the FERM domain is part of the PH domain family. The brain is a particularly rich source of protein 4.1 isoforms. The various 4.1R, 4.1G, 4.1N, and 4.1B mRNAs are all expressed in distinct patterns within the brain. It is likely that 4.1 proteins play important functional roles in the brain including motor coordination and spatial learning, postmitotic differentiation, and synaptic architecture and function. In addition they are found in nonerythroid, nonneuronal cells where they may play a general structural role in nuclear architecture and/or may interact with splicing factors. The FERM C domain is the third structural domain within the FERM domain. The FERM domain is found in the cytoskeletal-associated proteins such as ezrin, moesin, radixin, 4.1R, and merlin. These proteins provide a link between the membrane and cytoskeleton and are involved in signal transduction pathways. The FERM domain is also found in protein tyrosine phosphatases (PTPs) , the tyrosine kinases FAK and JAK, in addition to other proteins involved in signaling. This domain is structurally similar to the PH and PTB domains and consequently is capable of binding to both peptides and phospholipids at different sites.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664  187 YGVDLHHAKligrffhcfspakgeDSEGVEIMLGVCSSGLLIYRDRLRINRFAWPKVLKISYKRNNFYIKIRPGEFEQFE 266
Cdd:cd13184      1 YGVDLHPAK---------------DSEGVDIMLGVCSSGLLVYRDRLRINRFAWPKVLKISYKRNNFYIKIRPGEFEQYE 65

                           90       100
                   ....*....|....*....|....*....
gi 1207165664  267 STIGFKLPNHRAAKRLWKVCVEHHTFFRL 295
Cdd:cd13184     66 TTIGFKLPNHRAAKRLWKVCVEHHTFFRL 94

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in erythrocyte membrane protein band 4.1-like protein 3 (EPB41L3) and similar proteins; EPB41L3, also termed 4.1B, or differentially expressed in adenocarcinoma of the lung protein 1 (DAL-1), belongs to the skeletal protein 4.1 family that is involved in cellular processes such as cell adhesion, migration and signaling. EPB41L3 is a tumor suppressor that has been implicated in a variety of meningiomas and carcinomas. EPB41L3 contains a FERM domain, a spectrin and actin binding (SAB) domain, and a C-terminal domain. The FERM domain is made up of three sub-domains, F1, F2, and F3. This family corresponds to the F1 sub-domain, which is also called the N-terminal ubiquitin-like structural domain of the FERM domain (FERM_N).

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664    1 MQCKITLLDGSDYTCVVEKRDKGQVLFDKVCEHLNLLEKDYFGITFRDVENQKNWLDPAKDMKKQIRGVAWNFSFNVKFY 80
Cdd:cd17203      2 MQCKVTLLDGSEYTCEVEKRSKGQVLFDKVCEHLNLLEKDYFGLTYRDSENQKNWLDPAKEIKKQIRSGAWQFSFNVKFY 81

                   ...
gi 1207165664   81 PPE 83
Cdd:cd17203     82 PPD 84

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in erythrocyte membrane protein band 4.1-like protein 1 (EPB41L1) and similar proteins; EPB41L1, also termed neuronal protein 4.1 (4.1N), belongs to the skeletal protein 4.1 family that is involved in cellular processes such as cell adhesion, migration and signaling. It is a cytoskeleton-associated protein that may serve as a tumor suppressor in solid tumors. It suppresses hypoxia-induced epithelial-mesenchymal transition in epithelial ovarian cancer (EOC) cells. The down-regulation of EPB41L1 expression is a critical step for non-small cell lung cancer (NSCLC) development. Moreover, EPB41L1 functions as a linker protein between inositol 1,4,5-trisphosphate receptor type1 (IP3R1) and actin filaments in neurons. EPB41L1 contains a FERM domain, a spectrin and actin binding (SAB) domain, and a C-terminal domain. The FERM domain is made up of three sub-domains, F1, F2, and F3. This family corresponds to the F1 sub-domain, which is also called the N-terminal ubiquitin-like structural domain of the FERM domain (FERM_N).

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664    1 MQCKITLLDGSDYTCVVEKRDKGQVLFDKVCEHLNLLEKDYFGITFRDVENQKNWLDPAKDMKKQIRGVAWNFSFNVKFY 80
Cdd:cd17201      2 AICKVTLLDGSEYECEVEKHARGQVLFDTVCEHLNLLEKDYFGLTFCDTESQKNWLDPSKEIKKQIRSGPWHFAFTVKFY 81

                   ...
gi 1207165664   81 PPE 83
Cdd:cd17201     82 PPD 84

4.1 protein C-terminal domain (CTD); At the C-terminus of all known 4.1 proteins is a sequence domain unique to these proteins, known as the C-terminal domain (CTD). Mammalian CTDs are associated with a growing number of protein-protein interactions, although such activities have yet to be associated with invertebrate CTDs. Mammalian CTDs are generally defined by sequence alignment as encoded by exons 18-21. Comparison of known vertebrate 4.1 proteins with invertebrate 4.1 proteins indicates that mammalian 4.1 exon 19 represents a vertebrate adaptation that extends the sequence of the CTD with a Ser/Thr-rich sequence. The CTD was first described as a 22/24-kDa domain by chymotryptic digestion of erythrocyte 4.1 (4.1R). CTD is thought to represent an independent folding structure which has gained function since the divergence of vertebrates from invertebrates.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664  975 DTPVIQTEIKTITYEALQAETDGDADPGVLMSAQTITSETTSTTTTTHITKTVKGGISETRIEKRIVISGDADIDHDEAL 1054
Cdd:pfam05902    2 EVPIVHTETKTITYESSQVDGRGDSDPGVLVSAQTITSETQSTTTTTHITKTVKGGISETRIEKRIVITGDADIDHDQAL 81

                           90       100
                   ....*....|....*....|....*.
gi 1207165664 1055 AQAIKEAKEQHPDMSVTKVVVHKETE 1080
Cdd:pfam05902   82 AQAIKEAKEQHPDMSVTKVVVHKETE 107

FERM domain C-lobe of Protein tyrosine phosphatase non-receptor proteins 3 and 4 (PTPN4 and PTPN3); PTPN4 (also called PTPMEG, protein tyrosine phosphatase, megakaryocyte) is a cytoplasmic protein-tyrosine phosphatase (PTP) thought to play a role in cerebellar function. PTPMEG-knockout mice have impaired memory formation and cerebellar long-term depression. PTPN3/PTPH1 is a membrane-associated PTP that is implicated in regulating tyrosine phosphorylation of growth factor receptors, p97 VCP (valosin-containing protein, or Cdc48 in Saccharomyces cerevisiae), and HBV (Hepatitis B Virus) gene expression; it is mutated in a subset of colon cancers. PTPMEG and PTPN3/PTPH1 contains a N-terminal FERM domain, a middle PDZ domain, and a C-terminal phosphatase domain. PTP1/Tyrosine-protein phosphatase 1 from nematodes and a FERM_C repeat 1 from Tetraodon nigroviridis are also included in this cd. The FERM domain has a cloverleaf tripart structure composed of: (1) FERM_N (A-lobe or F1); (2) FERM_M (B-lobe, or F2); and (3) FERM_C (C-lobe or F3). The C-lobe within the FERM domain is part of the PH domain family. The FERM domain is found in the cytoskeletal-associated proteins such as ezrin, moesin, radixin, 4.1R, and merlin. These proteins provide a link between the membrane and cytoskeleton and are involved in signal transduction pathways. The FERM domain is also found in protein tyrosine phosphatases (PTPs) , the tyrosine kinases FAK and JAK, in addition to other proteins involved in signaling. This domain is structurally similar to the PH and PTB domains and consequently is capable of binding to both peptides and phospholipids at different sites.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664  186 MYGVDLHHAKligrffhcfspakgeDSEGVEIMLGVCSSGLLIYRDRLRINRFAWPKVLKISYKRNNFYIKIRPGEFEQF 265
Cdd:cd13189      1 LYGVELHSAR---------------DSNNLELQIGVSSAGILVFQNGIRINTFPWSKIVKISFKRKQFFIQLRREPNESR 65

                           90       100       110
                   ....*....|....*....|....*....|
gi 1207165664  266 ESTIGFKLPNHRAAKRLWKVCVEHHTFFRL 295
Cdd:cd13189     66 DTILGFNMLSYRACKNLWKSCVEHHTFFRL 95

FERM C-terminal PH-like domain;

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664  211 DSEGVEIMLGVCSSGLLIYRDRLRI-NRFAWPKVLKISYKRNNFYIKIRpgeFEQFESTIGFKLPNHRAAKRLWKVCVEH 289
Cdd:pfam09380    1 DKEGTDLWLGVSAKGILVYEDNNKIlNLFPWREIRKISFKRKKFLIKLR---DKSSEETLGFYTESSRACKYLWKLCVEQ 77

                   ....*.
gi 1207165664  290 HTFFRL 295
Cdd:pfam09380   78 HTFFRL 83

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F0 sub-domain and F1 sub-domain, found in FERM (Four.1/Ezrin/Radixin/Moesin) family proteins; FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain is present at the N-terminus of a large and diverse group of proteins that mediate linkage of the cytoskeleton to the plasma membrane. FERM-containing proteins are ubiquitous components of the cytocortex and are involved in cell transport, cell structure and signaling functions. The FERM domain is made up of three sub-domains, F1, F2, and F3. The family corresponds to the F1 sub-domain, which is also called the N-terminal ubiquitin-like structural domain of the FERM domain (FERM_N), which is structurally similar to ubiquitin.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664    1 MQCKITLLDGSDYTCVVEKRDKGQVLFDKVCEHLNLLEKDYFGITFRDVENQKNWLDPAKDMKKQIRGVA-WNFSFNVKF 79
Cdd:cd01765      1 ISCRVRLLDGTELTLEVSKKATGQELFDKVCEKLNLLEKDYFGLFYEDNDGQKHWLDLDKKISKQLKRSGpYQFYFRVKF 80

FERM domain C-lobe of FERM, RhoGEF and pleckstrin domain-containing protein 1 and related proteins; Members here include FARP1 (also called Chondrocyte-derived ezrin-like protein; PH domain-containing family C member 2), FARP2 (also called FIR/FERM domain including RhoGEF; FGD1-related Cdc42-GEF/FRG), and FRMD7(FERM domain containing 7). FARP1 and FARP2 are members of the Dbl family guanine nucleotide exchange factors (GEFs) which are upstream positive regulators of Rho GTPases. FARP1 has increased expression in differentiated chondrocytes. FARP2 is thought to regulate neurite remodeling by mediating the signaling pathways from membrane proteins to Rac. It is found in brain, lung, and testis, as well as embryonic hippocampal and cortical neurons. These members are composed of a N-terminal FERM domain, a proline-rich (PR) domain, Dbl-homology (DH), and two C-terminal PH domains. Other members in this family do not contain the DH domains such as the Human FERM domain containing protein 7 and Caenorhabditis elegans CFRM3, both of which have unknown functions. They contain an N-terminal FERM domain, a PH domain, followed by a FA (FERM adjacent) domain. The FERM domain has a cloverleaf tripart structure composed of: (1) FERM_N (A-lobe or F1); (2) FERM_M (B-lobe, or F2); and (3) FERM_C (C-lobe or F3). The C-lobe/F3 within the FERM domain is part of the PH domain family. The FERM domain is found in the cytoskeletal-associated proteins such as ezrin, moesin, radixin, 4.1R, and merlin. These proteins provide a link between the membrane and cytoskeleton and are involved in signal transduction pathways. The FERM domain is also found in protein tyrosine phosphatases (PTPs), the tyrosine kinases FAK and JAK, in addition to other proteins involved in signaling. This domain is structurally similar to the PH and PTB domains and consequently is capable of binding to both peptides and phospholipids at different sites.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664  179 ENVKKLSMYGVDLHHAKligrffhcfspakgeDSEGVEIMLGVCSSGLLIYRDRLRINRFAWPKVLKISYKRNNFYIKIR 258
Cdd:cd13193      1 ETARRCELYGIRLHPAK---------------DREGVKLNLAVAHMGILVFQGFTKINTFSWAKIRKLSFKRKRFLIKLH 65

                           90       100       110       120       130
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 1207165664  259 PGEFEQFESTIGFKLPNHRAAKRLWKVCVEHHTFFRL-VLPETPPKK--FLTLGSKF 312
Cdd:cd13193     66 PEAYGSYKDTVEFSFESRNECKSFWKKCIEHHAFFRCsEVPKPPSPKlrLFSRGSSF 122

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in FERM, RhoGEF and pleckstrin domain-containing protein 1 (FARP1) and similar proteins; This family includes the F1 sub-domain of FERM, RhoGEF and pleckstrin domain-containing proteins FARP1, FARP2, and FERM domain-containing protein 7 (FRMD7). FARP1, also termed chondrocyte-derived ezrin-like protein (CDEP), or pleckstrin homology (PH) domain-containing family C member 2 (PLEKHC2), is a neuronal activator of the RhoA GTPase. It promotes outgrowth of developing motor neuron dendrites. It also regulates excitatory synapse formation and morphology, as well as activates the GTPase Rac1 to promote F-actin assembly. FARP2, also termed FERM domain including RhoGEF (FIR), or Pleckstrin homology (PH) domain-containing family C member 3, is a Dbl-family guanine nucleotide exchange factor (GEF) that activates Rac1 or Cdc42 in response to upstream signals, suggesting roles in regulating processes such as neuronal axon guidance and bone homeostasis. It is also a key molecule involved in the response of neuronal growth cones to class-3 semaphorins. FRMD7 plays an important role in neuronal development and is involved in the regulation of F-actin, neurofilament, and microtubule dynamics. All family members contain a FERM domain that is made up of three sub-domains, F1, F2, and F3. This family corresponds to F1 sub-domain, which is also called the N-terminal ubiquitin-like structural domain of the FERM domain (FERM_N).

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664    1 MQCKITLLDGSDYTCVVEKRDKGQVLFDKVCEHLNLLEKDYFGITFRDVENQKNWLDPAKDMKKQIRGVA-WNFSFNVKF 79
Cdd:cd17098      1 LHVKVQMLDDTVHIFQVQQKALGEVLFDQVCKHLNLLESDYFGLEFTDPEGNKCWLDPEKPILRQVKRPKdVVFKFVVKF 80

                   ....*
gi 1207165664   80 YPPEP 84
Cdd:cd17098     81 YTPDP 85

FERM domain C-lobe of Novel band 4.1-like protein 4 and 5 (NBL4 and 5); NBL4 (also called Erythrocyte protein band 4.1-like 4; Epb4 1l4) plays a role the beta-catenin/Tcf signaling pathway and is thought to be involved in establishing the cell polarity or proliferation. NBL4 may be also involved in adhesion, in cell motility and/or in cell-to-cell communication. No role for NBL5 has been proposed to date. Both NBL4 and NBL5 contain a N-terminal FERM domain which has a cloverleaf tripart structure composed of: (1) FERM_N (A-lobe or F1); (2) FERM_M (B-lobe, or F2); and (3) FERM_C (C-lobe or F3). The C-lobe is a member of the PH superfamily. The FERM domain is found in the cytoskeletal-associated proteins such as ezrin, moesin, radixin, 4.1R, and merlin. These proteins provide a link between the membrane and cytoskeleton and are involved in signal transduction pathways. The FERM domain is also found in protein tyrosine phosphatases (PTPs) , the tyrosine kinases FAK and JAK, in addition to other proteins involved in signaling. This domain is structurally similar to the PH and PTB domains and consequently is capable of binding to both peptides and phospholipids at different sites.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664  188 GVDLHhakligrffhcfsPAKGEDseGVEIMLGVCSSGLLIYRDRLRINRFAWPKVLKISYKRNNFYIKIRPGEFEQFES 267
Cdd:cd13186      1 GVDLH-------------PVKGED--GNEYFLGLTPTGILVFENKTKIGLFFWPRITKLDFKGKKLKLVVKEKDDQEQEH 65

                           90       100
                   ....*....|....*....|....*..
gi 1207165664  268 TIGFKLPNHRAAKRLWKVCVEHHTFFR 294
Cdd:cd13186     66 TFVFRLPNKKACKHLWKCAVEHHAFFR 92

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in erythrocyte band 4.1-like protein 4A (EPB41L4A) and similar proteins; EPB41L4A, also termed protein NBL4, is a member of the band 4.1/Nbl4 (novel band 4.1-like protein 4) group of the FERM protein superfamily. It contains a FERM domain that is made up of three sub-domains, F1, F2, and F3. This family corresponds to the F1 sub-domain, which is also called the N-terminal ubiquitin-like structural domain of the FERM domain (FERM_N). EPB41L4A is an important component of the beta-catenin/Tcf pathway. It may be related to determination of cell polarity or proliferation.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664    1 MQCKITLLDGSDYTCVVE----KRDKGQVLFDKVCEHLNLLEKDYFGITFRDVENQKNWLDPAKDMKKQIRGVAWNFS-- 74
Cdd:cd17107      3 FYCEIVLLDESELILTIQqdgiKSSKGSVVLDVVFQHLNLLETDYFGLRYIDRQHQTHWLDPAKTLSEQLKLIGPPYTly 82

                   ....*.
gi 1207165664   75 FNVKFY 80
Cdd:cd17107     83 FGVKFY 88

FERM adjacent (FA); This region is found adjacent to Band 4.1 / FERM domains (pfam00373) in a subset of FERM containing protein. The region has been hypothesized to play a role in regulatory adaptation, based on similarity to other protein kinase substrates.

                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....
gi 1207165664  304 KFLTLGSKFRYSGRTQAQTRRASSQIVRPAPYFQRSSSKRYTMS 347
Cdd:pfam08736    1 KFFSLGSKFRYSGRTQKQTVEDSSEILRPQPEFERSPSKRYPSR 44

FERM domain C-lobe; The FERM domain has a cloverleaf tripart structure composed of: (1) FERM_N (A-lobe or F1); (2) FERM_M (B-lobe, or F2); and (3) FERM_C (C-lobe or F3). The C-lobe/F3 within the FERM domain is part of the PH domain family. The FERM domain is found in the cytoskeletal-associated proteins such as ezrin, moesin, radixin, 4.1R, and merlin. These proteins provide a link between the membrane and cytoskeleton and are involved in signal transduction pathways. The FERM domain is also found in protein tyrosine phosphatases (PTPs), the tyrosine kinases FAK and JAK, in addition to other proteins involved in signaling. This domain is structurally similar to the PH and PTB domains and consequently is capable of binding to both peptides and phospholipids at different sites.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664  202 HCFsPAKGEDSEGVEIMLGVCSSGLLIY--RDRLRINRFAWPKVLKISYKR-NNFYIKIRPgefEQFESTIGFKLPNhRA 278
Cdd:cd00836      3 EFF-PVKDKSKKGSPIILGVNPEGISVYdeLTGQPLVLFPWPNIKKISFSGaKKFTIVVAD---EDKQSKLLFQTPS-RQ 77

                           90
                   ....*....|....*.
gi 1207165664  279 AKRLWKVCVEHHTFFR 294
Cdd:cd00836     78 AKEIWKLIVGYHRFLL 93

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in FERM, ARH/RhoGEF and pleckstrin domain-containing protein 2 (FARP2) and similar proteins; FARP2, also termed FERM domain including RhoGEF (FIR), or Pleckstrin homology (PH) domain-containing family C member 3, is a Dbl-family guanine nucleotide exchange factor (GEF) that activates Rac1 or Cdc42 in response to upstream signals, suggesting roles in regulating processes such as neuronal axon guidance and bone homeostasis. It is also a key molecule involved in the response of neuronal growth cones to class-3 semaphorins. FARP2 contains a FERM domain, a Dbl-homology (DH) domain and two pleckstrin homology (PH) domains. The FERM domain is made up of three sub-domains, F1, F2, and F3. This family corresponds to the F1 sub-domain, which is also called the N-terminal ubiquitin-like structural domain of the FERM domain (FERM_N).

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664    1 MQCKITLLDGSDYTCVVEKRDKGQVLFDKVCEHLNLLEKDYFGITFRDVENQKNWLDPAKDMKKQI-RGVAWNFSFNVKF 79
Cdd:cd17190      1 LQLRVKLLDNTTEPLEIEPKADGQALLSQVFKRLNLVESDYFGLEFQNSQSNWIWLEPMKLIVKQVrRPKNTKLRLAVKF 80

                   ....*
gi 1207165664   80 YPPEP 84
Cdd:cd17190     81 FPPDP 85

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in FERM domain-containing protein 7 (FRMD7); FRMD7 plays an important role in neuronal development and is involved in the regulation of F-actin, neurofilament, and microtubule dynamics. It interacts with the Rho GTPase regulator, RhoGDIalpha, and activates the Rho subfamily member Rac1, which regulates reorganization of actin filaments and controls neuronal outgrowth. Mutations in the FRMD7 gene are responsible for the X-linked idiopathic congenital nystagmus (ICN), a disease which affects ocular motor control. FRMD7 contains a FERM domain, and a pleckstrin homology (PH) domain. The FERM domain is made up of three sub-domains, F1, F2, and F3. This family corresponds to the F1 sub-domain, which is also called the N-terminal ubiquitin-like structural domain of the FERM domain (FERM_N).

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664    4 KITLLDGSDYTCVVEKRDKGQVLFDKVCEHLNLLEKDYFGITFRDVENQKNWLDPAKDMKKQIRGVA-WNFSFNVKFYPP 82
Cdd:cd17188      5 KVQFLDDSQKVFVVDQKSTGKDLFNMSCSHLNLVEKEYFGLEFRNHAGNNVWLELLKPITKQIKNPKeLIFKFTVKFFPV 84

                   ..
gi 1207165664   83 EP 84
Cdd:cd17188     85 DP 86

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in FERM, ARH/RhoGEF and pleckstrin domain-containing protein 1 (FARP1); FARP1, also termed chondrocyte-derived ezrin-like protein (CDEP), or pleckstrin homology (PH) domain-containing family C member 2 (PLEKHC2), is a neuronal activator of the RhoA GTPase. It promotes outgrowth of developing motor neuron dendrites. It also regulates excitatory synapse formation and morphology, as well as activates the GTPase Rac1 to promote F-actin assembly. As a novel downstream signaling partner of Rif, FARP1 is involved in the regulation of semaphorin signaling in neurons. FARP1 contains a FERM domain, a Dbl-homology (DH) domain and two pleckstrin homology (PH) domains. The FERM domain is made up of three sub-domains, F1, F2, and F3. This family corresponds to the F1 sub-domain, which is also called the N-terminal ubiquitin-like structural domain of the FERM domain (FERM_N).

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664    4 KITLLDGSDYTCVVEKRDKGQVLFDKVCEHLNLLEKDYFGITFRDVENQKNWLDPAKDMKKQIRGVAWN-FSFNVKFYPP 82
Cdd:cd17189      4 KVQMLDDTQEVFEVPQRAPGKVLLDAVCSHLNLVEGDYFGLEFQDHRKVMVWLDLLKPIVKQIRRPKHVvLRFVVKFFPP 83

                   .
gi 1207165664   83 E 83
Cdd:cd17189     84 D 84

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in the ERM family proteins; The ezrin-radixin-moesin (ERM) family includes a group of closely related cytoskeletal proteins that play an essential role in microvilli formation, T-cell activation, and tumor metastasis through providing a regulated linkage between F-actin and membrane-associated proteins. These proteins may also function in signaling cascades that regulate the assembly of actin stress fibers. The ERM proteins consist of an N-terminal FERM domain, a coiled-coil (CC) domain and a C-terminal tail segment (C-tail) containing a well-defined actin-binding motif. They exist in two states, a dormant state in which the FERM domain binds to its own C-terminal tail and thereby precludes binding of some partner proteins, and an activated state, in which the FERM domain binds to one of many membrane binding proteins and the C-terminal tail binds to F-actin. The FERM domain is made up of three sub-domains, F1, F2, and F3. This family corresponds to the F1 sub-domain, which is also called the N-terminal ubiquitin-like structural domain of the FERM domain (FERM_N). Merlin, which is highly related to the members of the ezrin, radixin, and moesin (ERM) protein family that are directly attached to and functionally linked with NHE1, is included in this family.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664    4 KITLLDgSDYTCVVEKRDKGQVLFDKVCEHLNLLEKDYFGITFRDVENQKNWLDPAKDMKKQIRGV--AWNFSFNVKFYP 81
Cdd:cd17097      4 RVTTMD-AELEFSIKPKAKGRELFDLVCRTIGLRETWYFGLQYENKKGRVAWLKPDKKVLTQDVSKnnTLKFFFLVKFYP 82

FERM domain C-lobe of E3 ubiquitin ligase myosin regulatory light chain-interacting protein (MYLIP; also called inducible degrader of the LDL receptor, IDOL); MYLIP/IDOL is a regulator of the LDL receptor (LDLR) pathway via the nuclear receptor liver X receptor (LXR). In response to cellular cholesterol loading, the activation of LXR leads to the induction of MYLIP expression. MYLIP stimulates ubiquitination of the LDLR on its cytoplasmic tail, directing its degradation. The LXR-MYLIP-LDLR pathway provides a complementary pathway to sterol regulatory element-binding proteins for the feedback inhibition of cholesterol uptake. MYLIP has an N-terminal FERM domain and in some cases a C-terminal RING domain. The FERM domain has a cloverleaf tripart structure composed of: (1) FERM_N (A-lobe or F1); (2) FERM_M (B-lobe, or F2); and (3) FERM_C (C-lobe or F3). The C-lobe/F3 within the FERM domain is part of the PH domain family. The FERM domain is found in the cytoskeletal-associated proteins such as ezrin, moesin, radixin, 4.1R, and merlin. These proteins provide a link between the membrane and cytoskeleton and are involved in signal transduction pathways. The FERM domain is also found in protein tyrosine phosphatases (PTPs), the tyrosine kinases FAK and JAK, in addition to other proteins involved in signaling. This domain is structurally similar to the PH and PTB domains and consequently is capable of binding to both peptides and phospholipids at different sites.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664  187 YGVDLHHAKligrffhcfspakgeDSEGVEIMLGVCSSGLLIYRDRLR-INRFAWPKVLKISYKRNNFYIKIRPGEFEqf 265
Cdd:cd13195      1 YGVEFFEVR---------------NIEGQKLLIGVGPHGITICNDDFEvIERIPYTAIQMATSSGRVFTLTYLSDDGS-- 63

                           90       100
                   ....*....|....*....|....*....
gi 1207165664  266 ESTIGFKLPNHRAAKRLWKVCVEHHTFFR 294
Cdd:cd13195     64 VKVLEFKLPSTRAASGLYRAITEKHAFYR 92

FERM domain C-lobe of Protein tyrosine phosphatase non-receptor proteins 14 and 21 (PTPN14 and 21); This CD contains PTP members: pez/PTPN14 and PTPN21. A number of mutations in Pez have been shown to be associated with breast and colorectal cancer. The PTPN protein family belong to larger family of PTPs. PTPs are known to be signaling molecules that regulate a variety of cellular processes including cell growth, differentiation, mitotic cycle, and oncogenic transformation. The members are composed of a N-terminal FERM domain and a C-terminal PTP catalytic domain. The FERM domain has a cloverleaf tripart structure composed of: (1) FERM_N (A-lobe or F1); (2) FERM_M (B-lobe, or F2); and (3) FERM_C (C-lobe or F3). The C-lobe/F3 within the FERM domain is part of the PH domain family. Like most other ERM members they have a phosphoinositide-binding site in their FERM domain. The FERM C domain is the third structural domain within the FERM domain. The FERM domain is found in the cytoskeletal-associated proteins such as ezrin, moesin, radixin, 4.1R, and merlin. These proteins provide a link between the membrane and cytoskeleton and are involved in signal transduction pathways. The FERM domain is also found in protein tyrosine phosphatases (PTPs) , the tyrosine kinases FAK and JAK, in addition to other proteins involved in signaling. This domain is structurally similar to the PH and PTB domains and consequently is capable of binding to both peptides and phospholipids at different sites.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664  206 PAKgeDSEGVEIMLGVCSSGLLIYRDRLRINR-FAWPKVLKISYKRNNFYIkirpgEFEQFESTIGFKLPNHRAAKRLWK 284
Cdd:cd13188      7 PAK--DEQGNEVLIGASLEGIFVKHDNGRPPVfFRWEDIKNVINHKRTFSI-----ECQNSEETVQFQFEDAETAKYVWK 79

                           90
                   ....*....|.
gi 1207165664  285 VCVEHHTFFRL 295
Cdd:cd13188     80 LCVLQHKFYRQ 90

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in tyrosine-protein phosphatase non-receptors PTPN14, PTPN21, and similar proteins; This family includes tyrosine-protein phosphatase non-receptors PTPN14 and PTPN21, both of which are protein-tyrosine phosphatase (PTP). They belong to the FERM family of PTPs characterized by a conserved N-terminal FERM domain and a C-terminal PTP catalytic domain with an intervening sequence containing an acidic region and a putative SH3 domain-binding sequence. The FERM domain is made up of three sub-domains, F1, F2, and F3. This family corresponds to the F1 sub-domain, which is also called the N-terminal ubiquitin-like structural domain of the FERM domain (FERM_N). PTPN14 plays a role in the nucleus during cell proliferation. PTPN21 interacts with a Tec tyrosine kinase family member, the epithelial and endothelial tyrosine kinase (Etk, also known as Bmx), modulates Stat3 activation, and plays a role in the regulation of cell growth and differentiation.

                           10        20        30        40        50        60        70
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 1207165664    4 KITLLDGSDYTCVVEKRDKGQVLFDKVCEHLNLLEKDYFGITFRDVENQKNWLDPAKDMKKQIRGVAWNFS--FNVKFY 80
Cdd:cd17099      7 RIQLLDNTVLECTLSPESTGQDCLEYVAQRLELREIEYFGLRYVNKKGQLRWVDLEKPLKKQLDKHAHEPLlyFGVMFY 85

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in tyrosine-protein phosphatase non-receptor type 13 (PTPN13) and similar proteins; This family includes tyrosine-protein phosphatase non-receptor type 13 (PTPN13), FERM and PDZ domain-containing protein 2 (FRMPD2), and FERM domain-containing proteins FRMD1 and FRMD6. All family members contain a FERM domain that is made up of three sub-domains, F1, F2, and F3. This family corresponds to the F1 sub-domain, which is also called the N-terminal ubiquitin-like structural domain of the FERM domain (FERM_N).

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664    7 LLDGSDYTCVVEKRDKGQVLFDKVCEHLNLLEKDYFGITFR--------DVEN------QKNWLDPAKDMKKQIRGVaWN 72
Cdd:cd17101      8 LLNGQRLQVAVDVKTTVQDLFDQVCDHLGLQETELFGLAVLkdgeyfflDPDTklskyaPKGWKSEAKKGLKGGKPV-FT 86

                           90
                   ....*....|.
gi 1207165664   73 FSFNVKFYPPE 83
Cdd:cd17101     87 LYFRVKFYVDN 97

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in the ERM family proteins, Ezrin, Radixin, and Moesin; The ezrin-radixin-moesin (ERM) family includes a group of closely related cytoskeletal proteins that plays an essential role in microvilli formation, T-cell activation, and tumor metastasis through providing a regulated linkage between F-actin and membrane-associated proteins. These proteins may also function in signaling cascades that regulate the assembly of actin stress fibers. The ERM proteins consist of an N-terminal FERM domain, a coiled-coil (CC) domain and a C-terminal tail segment (C-tail) containing a well-defined actin-binding motif. They exist in two states, a dormant state in which the FERM domain binds to its own C-terminal tail and thereby precludes binding of some partner proteins, and an activated state, in which the FERM domain binds to one of many membrane binding proteins and the C-terminal tail binds to F-actin. The FERM domain is made up of three sub-domains, F1, F2, and F3. This family corresponds to the F1 sub-domain, which is also called the N-terminal ubiquitin-like structural domain of the FERM domain (FERM_N).

                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 1207165664   23 GQVLFDKVCEHLNLLEKDYFGITFRDVENQKNWLD-----PAKDMKKQirgVAWNFSFNVKFYP 81
Cdd:cd17187     22 GKQLFDQVVKTIGLREIWFFGLQYVDSKGYSTWLKlnkkvLSQDVKKE---NPLQFKFRAKFYP 82

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in tyrosine-protein phosphatase non-receptor type 14 (PTPN14) and similar proteins; PTPN14, also termed protein-tyrosine phosphatase pez, or PTPD2, or PTP36, is a widely expressed non-transmembrane cytosolic protein tyrosine phosphatase (PTP). It belongs to the FERM family of PTPs characterized by a conserved N-terminal FERM domain and a C-terminal PTP catalytic domain with an intervening sequence containing an acidic region and a putative SH3 domain-binding sequence. The FERM domain is made up of three sub-domains, F1, F2, and F3. This family corresponds to the F1 sub-domain, which is also called the N-terminal ubiquitin-like structural domain of the FERM domain (FERM_N). PTPN14 plays a role in the nucleus during cell proliferation. It forms a complex with Kibra and LATS1 proteins and negatively regulates the key Hippo pathway protein Yes-associated protein (YAP) oncogenic function by controlling its localization. It specifically regulates p130 Crk-associated substrate (p130Cas) phosphorylation at tyrosine residue 128 (Y128) in colorectal cancer (CRC) cells. Moreover, PTPN14 may be a critical enzyme in regulating endothelial cell function. It plays a crucial role in organogenesis by inducing transforming growth factor beta (TGFbeta) and epithelial-mesenchymal transition (EMT). It also acts as a modifier of angiogenesis and hereditary haemorrhagic telangiectasia. It regulates the lymphatic function and choanal development through the interaction with the vascular endothelial growth factor receptor 3 (VEGFR3), a receptor tyrosine kinase essential for lymphangiogenesis. Furthermore, PTPN14 functions as a regulator of cell motility through its action on cell-cell adhesion. Beta-Catenin, a central component of adherens junctions, has been identified as a PTPN14 substrate. PTPN14 works as a novel sperm-motility biomarker and a potential mitochondrial protein.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664    4 KITLLDGSDYTCVVEKRDKGQVLFDKVCEHLNLLEKDYFGITFRDVENQKNWLDPAKDMKKQIRGVAWN--FSFNVKFYP 81
Cdd:cd17191      7 RIRLLDSNVIECTLSVESTGQECLEAVAQRLELRETHYFGLWFLSKSQQARWVELEKPLKKQLDKFANEplLFFGVMFYV 86

                   .
gi 1207165664   82 P 82
Cdd:cd17191     87 P 87

FERM domain C-lobe/F3 of the ERM family; The ERM family includes ezrin, radixin, moesin and merlin. They are composed of a N-terminal FERM (ERM) domain (also called N-ERMAD (N-terminal ERM association domain)), a coiled coil region (CRR), and a C-terminal domain CERMAD (C-terminal ERM association domain) which has an F-actin-binding site (ABD). Two actin-binding sites have been identified in the middle and N-terminal domains. Merlin is structurally similar to the ERM proteins, but instead of an actin-binding domain (ABD), it contains a C-terminal domain (CTD), just like the proteins from the 4.1 family. Activated ezrin, radixin and moesin are thought to be involved in the linking of actin filaments to CD43, CD44, ICAM1-3 cell adhesion molecules, various membrane channels and receptors, such as the Na+/H+ exchanger-3 (NHE3), cystic fibrosis transmembrane conductance regulator (CFTR), and the beta2-adrenergic receptor. The ERM proteins exist in two states, a dormant state in which the FERM domain binds to its own C-terminal tail and thereby precludes binding of some partner proteins, and an activated state, in which the FERM domain binds to one of many membrane binding proteins and the C-terminal tail binds to F-actin. The FERM domain has a cloverleaf tripart structure composed of: (1) FERM_N (A-lobe or F1); (2) FERM_M (B-lobe, or F2); and (3) FERM_C (C-lobe or F3). The C-lobe/F3 within the FERM domain of ERM is part of the PH domain family. The FERM domain is found in the cytoskeletal-associated proteins such as ezrin, moesin, radixin, 4.1R, and merlin. These proteins provide a link between the membrane and cytoskeleton and are involved in signal transduction pathways. The FERM domain is also found in protein tyrosine phosphatases (PTPs), the tyrosine kinases FAK and JAK, in addition to other proteins involved in signaling. This domain is structurally similar to the PH and PTB domains and consequently is capable of binding to both peptides and phospholipids at different sites.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664  186 MYGVDLHHAKligrffhcfspakgeDSEGVEIMLGVCSSGLLIYR--DRL--RINrFAWPKVLKISYKRNNFYIKIRPGE 261
Cdd:cd13194      1 MYGVNYFEIK---------------NKKGTDLWLGVDALGLNIYEpdNKLtpKIG-FPWSEIRNISFNDKKFVIKPIDKK 64

                           90       100       110
                   ....*....|....*....|....*....|..
gi 1207165664  262 FEQFEstigFKLPNHRAAKRLWKVCVEHHTFF 293
Cdd:cd13194     65 APDFV----FYSPRLRINKRILDLCMGNHELY 92

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in moesin and similar proteins; Moesin, also termed membrane-organizing extension spike protein, is a member of the ezrin/radixin/moesin (ERM) family of cytoskeletal proteins that plays an essential role in microvilli formation, T-cell activation, and tumor metastasis through providing a regulated linkage between F-actin and membrane-associated proteins. These proteins may also function in signaling cascades that regulate the assembly of actin stress fibers. The ERM proteins consist of an N-terminal FERM domain, a coiled-coil (CC) domain and a C-terminal tail segment (C-tail) containing a well-defined actin-binding motif. The C-terminal domain can fold back to bind to the FERM domain forming an autoinhibited conformation. The FERM domain is made up of three sub-domains, F1, F2, and F3. This family corresponds to F1 sub-domain, which is also called the N-terminal ubiquitin-like structural domain of the FERM domain (FERM_N). Moesin is involved in mitotic spindle function through stabilizing cell shape and microtubules at the cell cortex. It is required for the formation of F-actin networks that mediate endosome biogenesis or maturation and transport through the degradative pathway.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207165664    1 MQCKITLLDgSDYTCVVEKRDKGQVLFDKVCEHLNLLEKDYFGITFRDVENQKNWLD-----PAKDMKKQIRGVawnFSF 75
Cdd:cd17237      2 ISVRVTTMD-AELEFAIQPNTTGKQLFDQVVKTIGLREVWFFGLQYQDTKGFSTWLKlnkkvTAQDVRKESPLL---FKF 77

                   ....*.
gi 1207165664   76 NVKFYP 81
Cdd:cd17237     78 RAKFYP 83