NCBI Home Page NCBI Site Search page NCBI Guide that lists and describes the NCBI resources
Conserved domains on  [gi|1207153078|ref|XP_021324009|]
View 

syntaxin binding protein 6 (amisyn), like isoform X1 [Danio rerio]

Protein Classification

STXBP6 family PH domain-containing protein; PH domain-containing protein( domain architecture ID 10199837)

STXBP6 family PH (pleckstrin homology) domain-containing protein similar to PH region of syntaxin-binding protein 6 (STXBP6), which forms non-fusogenic complexes with SNAP25 and STX1A and may thereby modulate the formation of functional SNARE complexes and exocytosis| PH (pleckstrin homology) domain-containing protein similar to Caenorhabditis elegans protein C15H7.4

Graphical summary

 Zoom to residue level

show extra options »

Show site features     Horizontal zoom: ×

List of domain hits

Name Accession Description Interval E-value
PH-STXBP6 cd14681
PH-like domain of Syntaxin binding protein 6; Syntaxin binding protein 6 (STXBP6, also called ...
2-130 2.04e-80

PH-like domain of Syntaxin binding protein 6; Syntaxin binding protein 6 (STXBP6, also called Amisyn) contains, beside the N-terminal PH-like domain, a C-terminal R-SNARE-like domain, which allows it to assemble into SNARE complexes, which in turn makes the complexes inactive and inhibits exocytosis. SNARE complexes mediate membrane fusion, important for trafficking of newly synthesized proteins, recycling of pre-existing proteins and organelle formation. SNARE proteins are classified into four groups, Qa-, Qb-, Qc- and R-SNAREs, with STXBP6 being a R-SNARE. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.


:

Pssm-ID: 270200  Cd Length: 130  Bit Score: 238.69  E-value: 2.04e-80
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207153078   2 NIQSAISREIFVPRDEKLLVSIEVRRRMKRTGLSLKGR-NKKYLTFLCLSVTNSRPAKVFITKVKKFQGARQYAKRSQWS 80
Cdd:cd14681     1 SAKSAISKEIFAPRDERMLGAVQVKRRTKKKIPFLATGgQGEYLTYICLSVTNKKPAQVFITKVKQFEGSTSFVRRSQWM 80
                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|
gi 1207153078  81 VEQLRQVNGINPDKDTPEFDLVFDRTTDQWEASSAAEKCMFVQVLYHACQ 130
Cdd:cd14681    81 LEQLRQVNGIDPNKDSPEFDLVFDNGFDQWVASSASEKCTFFQILHHTCQ 130
SNARE super family cl22856
SNARE motif; SNARE (soluble N-ethylmaleimide-sensitive factor attachment protein receptor) ...
228-277 3.92e-09

SNARE motif; SNARE (soluble N-ethylmaleimide-sensitive factor attachment protein receptor) proteins consist of coiled-coil helices (called SNARE motifs) which mediate the interactions between SNARE proteins, and a transmembrane domain. The SNARE complex mediates membrane fusion, important for trafficking of newly synthesized proteins, recycling of pre-existing proteins and organelle formation. SNARE proteins are classified into four groups, Qa-, Qb-, Qc- and R-SNAREs, depending on whether the residue in the hydrophilic center layer of the four-helical bundle is a glutamine (Q) or arginine (R). Qa-, Qb- and Qc-SNAREs are localized to target organelle membranes, while R-SNARE is localized to vesicle membranes. They form unique complexes consisting of one member of each subgroup, that mediate fusion between a specific type of vesicles and their target organelle. Their SNARE motifs form twisted and parallel heterotetrameric helix bundles.


The actual alignment was detected with superfamily member cd15892:

Pssm-ID: 473982  Cd Length: 62  Bit Score: 52.08  E-value: 3.92e-09
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|
gi 1207153078 228 AVRKMGNVMRRASQVLSERGERLMKADDKTSHMLHGARHFAEAAQRLALK 277
Cdd:cd15892    10 AADSVTSAVQKASQALNERGERLGRAEEKTEDMKNSAQQFAETAHKLAMK 59
 
Name Accession Description Interval E-value
PH-STXBP6 cd14681
PH-like domain of Syntaxin binding protein 6; Syntaxin binding protein 6 (STXBP6, also called ...
2-130 2.04e-80

PH-like domain of Syntaxin binding protein 6; Syntaxin binding protein 6 (STXBP6, also called Amisyn) contains, beside the N-terminal PH-like domain, a C-terminal R-SNARE-like domain, which allows it to assemble into SNARE complexes, which in turn makes the complexes inactive and inhibits exocytosis. SNARE complexes mediate membrane fusion, important for trafficking of newly synthesized proteins, recycling of pre-existing proteins and organelle formation. SNARE proteins are classified into four groups, Qa-, Qb-, Qc- and R-SNAREs, with STXBP6 being a R-SNARE. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.


Pssm-ID: 270200  Cd Length: 130  Bit Score: 238.69  E-value: 2.04e-80
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207153078   2 NIQSAISREIFVPRDEKLLVSIEVRRRMKRTGLSLKGR-NKKYLTFLCLSVTNSRPAKVFITKVKKFQGARQYAKRSQWS 80
Cdd:cd14681     1 SAKSAISKEIFAPRDERMLGAVQVKRRTKKKIPFLATGgQGEYLTYICLSVTNKKPAQVFITKVKQFEGSTSFVRRSQWM 80
                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|
gi 1207153078  81 VEQLRQVNGINPDKDTPEFDLVFDRTTDQWEASSAAEKCMFVQVLYHACQ 130
Cdd:cd14681    81 LEQLRQVNGIDPNKDSPEFDLVFDNGFDQWVASSASEKCTFFQILHHTCQ 130
Sec3-PIP2_bind pfam15277
Exocyst complex component SEC3 N-terminal PIP2 binding PH; This is the N-terminal domain of ...
41-130 5.64e-24

Exocyst complex component SEC3 N-terminal PIP2 binding PH; This is the N-terminal domain of fungal and eukaryotic Sec3 proteins. Sec3 is a component of the exocyst complex that is involved in the docking of exocytic vesicles with fusion sites on the plasma membrane.This N-terminal domain contains a cryptic pleckstrin homology (PH) fold, and all six positively charged lysine and arginine residues in the PH domain predicted to bind the PIP2 head group are conserved. The exocyst complex is essential for many exocytic events, by tethering vesicles at the plasma membrane for fusion. In fission yeast, polarised exocytosis for growth relies on the combined action of the exocyst at cell poles and myosin-driven transport along actin cables.


Pssm-ID: 464608  Cd Length: 85  Bit Score: 92.57  E-value: 5.64e-24
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207153078  41 KKYLTFLCLSVTNSRpaKVFITKVKKFQGARqYAKRSQWSVEQLRQVNGINPDKDtpeFDLVFDRTtDQWEASSAAEKCM 120
Cdd:pfam15277   2 KKKPRYLCLSVTKSG--RVFLHKVKENSNGS-FSIGKTWPLKELRLVEGINPDKG---FDLTFDKP-YYWQANSPKEKNA 74
                          90
                  ....*....|
gi 1207153078 121 FVQVLYHACQ 130
Cdd:pfam15277  75 FIRSLVKLYR 84
R-SNARE_STXBP6 cd15892
SNARE domain of STXBP6; Syntaxin binding protein 6 (STXBP6, also called Amisyn), as well as ...
228-277 3.92e-09

SNARE domain of STXBP6; Syntaxin binding protein 6 (STXBP6, also called Amisyn), as well as its relative Syntaxin binding protein 5 (STXBP5, also called Tomosyn), contains a C-terminal R-SNARE-like domain, which allows it to assemble into SNARE complexes, which in turn makes the complexes inactive and inhibits exocytosis. In general, SNARE (soluble N-ethylmaleimide-sensitive factor attachment protein receptor) proteins consist of coiled-coil helices (called SNARE motifs) which mediate the interactions between SNARE proteins, and a transmembrane domain. The SNARE complex mediates membrane fusion, important for trafficking of newly synthesized proteins, recycling of pre-existing proteins and organelle formation. SNARE proteins are classified into four groups, Qa-, Qb-, Qc- and R-SNAREs, depending on whether the residue in the hydrophilic center layer of the four-helical bundle is a glutamine (Q) or arginine (R). Qc-, as well as Qa- and Qb-SNAREs, are localized to target organelle membranes, while R-SNARE is localized to vesicle membranes. They form unique complexes consisting of one member of each subgroup, that mediate fusion between a specific type of vesicles and their target organelle.


Pssm-ID: 277245  Cd Length: 62  Bit Score: 52.08  E-value: 3.92e-09
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|
gi 1207153078 228 AVRKMGNVMRRASQVLSERGERLMKADDKTSHMLHGARHFAEAAQRLALK 277
Cdd:cd15892    10 AADSVTSAVQKASQALNERGERLGRAEEKTEDMKNSAQQFAETAHKLAMK 59
 
Name Accession Description Interval E-value
PH-STXBP6 cd14681
PH-like domain of Syntaxin binding protein 6; Syntaxin binding protein 6 (STXBP6, also called ...
2-130 2.04e-80

PH-like domain of Syntaxin binding protein 6; Syntaxin binding protein 6 (STXBP6, also called Amisyn) contains, beside the N-terminal PH-like domain, a C-terminal R-SNARE-like domain, which allows it to assemble into SNARE complexes, which in turn makes the complexes inactive and inhibits exocytosis. SNARE complexes mediate membrane fusion, important for trafficking of newly synthesized proteins, recycling of pre-existing proteins and organelle formation. SNARE proteins are classified into four groups, Qa-, Qb-, Qc- and R-SNAREs, with STXBP6 being a R-SNARE. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.


Pssm-ID: 270200  Cd Length: 130  Bit Score: 238.69  E-value: 2.04e-80
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207153078   2 NIQSAISREIFVPRDEKLLVSIEVRRRMKRTGLSLKGR-NKKYLTFLCLSVTNSRPAKVFITKVKKFQGARQYAKRSQWS 80
Cdd:cd14681     1 SAKSAISKEIFAPRDERMLGAVQVKRRTKKKIPFLATGgQGEYLTYICLSVTNKKPAQVFITKVKQFEGSTSFVRRSQWM 80
                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|
gi 1207153078  81 VEQLRQVNGINPDKDTPEFDLVFDRTTDQWEASSAAEKCMFVQVLYHACQ 130
Cdd:cd14681    81 LEQLRQVNGIDPNKDSPEFDLVFDNGFDQWVASSASEKCTFFQILHHTCQ 130
PH-SEC3_like cd14675
PH-like domain of Sec3-like protein; Fungal Sec3, as well as its homolog in higher eukaryotes ...
2-130 3.73e-37

PH-like domain of Sec3-like protein; Fungal Sec3, as well as its homolog in higher eukaryotes Exocyst complex component 1 (EXOC1) are part of the exocyst is a conserved octameric complex involved in the docking of post-Golgi transport vesicles to sites of membrane remodeling during cellular processes such as polarization, migration, and division. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.


Pssm-ID: 270194  Cd Length: 115  Bit Score: 127.72  E-value: 3.73e-37
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207153078   2 NIQSAISREIFVPRDEKLLVSIEVRrrmkrtglslKGRNKKYLTFLCLSVTnsRPAKVFITKVKKFQGaRQYAKRSQWSV 81
Cdd:cd14675     1 AIKQAIQRSLFSPAHERLIEDVEVS----------KGGKKKRILFLCVSVT--KPGQVRLHKVKKNDN-GSFKIGKTWNL 67
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*....
gi 1207153078  82 EQLRQVNGINPDKDTPEFDLVFDRtTDQWEASSAAEKCMFVQVLYHACQ 130
Cdd:cd14675    68 KDLKKVDGKDPDKDTPEFDLHFDK-TYKWEASSVAEKEAFISSLVKLYR 115
PH-EXOC1 cd14683
PH-like domain of Exocyst complex component 1; Exocyst complex component 1 (EXOC1, also known ...
2-130 1.31e-30

PH-like domain of Exocyst complex component 1; Exocyst complex component 1 (EXOC1, also known as SEC3) is the higher eukaryotes homolog of yeast Sec3. The Exocyst is a conserved octameric complex involved in the docking of post-Golgi transport vesicles to sites of membrane remodeling during cellular processes such as polarization, migration, and division. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.


Pssm-ID: 270202  Cd Length: 117  Bit Score: 110.81  E-value: 1.31e-30
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207153078   2 NIQSAISREIFVPRDEKLLVSIEVrrrmkrtglSLKGRNKKyLTFLCLSVTNSRPAKVFITKVKKfQGARQYAKRSQWSV 81
Cdd:cd14683     1 AIRHALQREVFTPNDERLLAVVNV---------SKAGKKKK-TSFLCVAVTTERPVQVRLYQVKK-SDKGVYKKKRSWLL 69
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*....
gi 1207153078  82 EQLRQVNGINPDKDTPEFDLVFDRTTdQWEASSAAEKCMFVQVLYHACQ 130
Cdd:cd14683    70 RDLKTVDGKNPKKETPEFDLHFDKVY-KWVASNVQEKNAFISCLWKLCH 117
Sec3-PIP2_bind pfam15277
Exocyst complex component SEC3 N-terminal PIP2 binding PH; This is the N-terminal domain of ...
41-130 5.64e-24

Exocyst complex component SEC3 N-terminal PIP2 binding PH; This is the N-terminal domain of fungal and eukaryotic Sec3 proteins. Sec3 is a component of the exocyst complex that is involved in the docking of exocytic vesicles with fusion sites on the plasma membrane.This N-terminal domain contains a cryptic pleckstrin homology (PH) fold, and all six positively charged lysine and arginine residues in the PH domain predicted to bind the PIP2 head group are conserved. The exocyst complex is essential for many exocytic events, by tethering vesicles at the plasma membrane for fusion. In fission yeast, polarised exocytosis for growth relies on the combined action of the exocyst at cell poles and myosin-driven transport along actin cables.


Pssm-ID: 464608  Cd Length: 85  Bit Score: 92.57  E-value: 5.64e-24
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207153078  41 KKYLTFLCLSVTNSRpaKVFITKVKKFQGARqYAKRSQWSVEQLRQVNGINPDKDtpeFDLVFDRTtDQWEASSAAEKCM 120
Cdd:pfam15277   2 KKKPRYLCLSVTKSG--RVFLHKVKENSNGS-FSIGKTWPLKELRLVEGINPDKG---FDLTFDKP-YYWQANSPKEKNA 74
                          90
                  ....*....|
gi 1207153078 121 FVQVLYHACQ 130
Cdd:pfam15277  75 FIRSLVKLYR 84
R-SNARE_STXBP6 cd15892
SNARE domain of STXBP6; Syntaxin binding protein 6 (STXBP6, also called Amisyn), as well as ...
228-277 3.92e-09

SNARE domain of STXBP6; Syntaxin binding protein 6 (STXBP6, also called Amisyn), as well as its relative Syntaxin binding protein 5 (STXBP5, also called Tomosyn), contains a C-terminal R-SNARE-like domain, which allows it to assemble into SNARE complexes, which in turn makes the complexes inactive and inhibits exocytosis. In general, SNARE (soluble N-ethylmaleimide-sensitive factor attachment protein receptor) proteins consist of coiled-coil helices (called SNARE motifs) which mediate the interactions between SNARE proteins, and a transmembrane domain. The SNARE complex mediates membrane fusion, important for trafficking of newly synthesized proteins, recycling of pre-existing proteins and organelle formation. SNARE proteins are classified into four groups, Qa-, Qb-, Qc- and R-SNAREs, depending on whether the residue in the hydrophilic center layer of the four-helical bundle is a glutamine (Q) or arginine (R). Qc-, as well as Qa- and Qb-SNAREs, are localized to target organelle membranes, while R-SNARE is localized to vesicle membranes. They form unique complexes consisting of one member of each subgroup, that mediate fusion between a specific type of vesicles and their target organelle.


Pssm-ID: 277245  Cd Length: 62  Bit Score: 52.08  E-value: 3.92e-09
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|
gi 1207153078 228 AVRKMGNVMRRASQVLSERGERLMKADDKTSHMLHGARHFAEAAQRLALK 277
Cdd:cd15892    10 AADSVTSAVQKASQALNERGERLGRAEEKTEDMKNSAQQFAETAHKLAMK 59
PH-EXOC1_like cd14682
PH-like domain of Exocyst complex component 1-like; Exocyst complex component 1-like proteins ...
9-125 9.27e-09

PH-like domain of Exocyst complex component 1-like; Exocyst complex component 1-like proteins are short, higher eukaryotic proteins that show homology to the PH-domain of higher eukaryotic EXOC1 and yeast SEC3 which are part of the exocyst complex involved in the docking of post-Golgi transport vesicles to sites of membrane remodeling during cellular processes such as polarization, migration, and division. Their function is unknown. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.


Pssm-ID: 270201  Cd Length: 118  Bit Score: 52.49  E-value: 9.27e-09
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207153078   9 REIFVPRDEKLLVSIEVRRrmkrtglSLKGRNkkyltFLCLSVTNSRPAKVFITKVKKFQGARQYAKRSQWSVEQLRQVN 88
Cdd:cd14682    10 KKLFRPLGQTLYEFIEIEE-------QSHGRH-----YLCASVAKDKEVQISMVKHYRVCLDEKYERTEIWSLKDLEMID 77
                          90       100       110
                  ....*....|....*....|....*....|....*..
gi 1207153078  89 GINPDKDTPEFDLVFDRTTDqWEASSAAEKCMFVQVL 125
Cdd:cd14682    78 GKDADTDNPCFDMHFEEVRS-VEAYSCASKYAFARTL 113
R-SNARE_STXBP5_6 cd15873
SNARE domain of STXBP5, STXBP6 and related proteins; Syntaxin binding protein 5 (STXBP5, also ...
233-278 1.76e-06

SNARE domain of STXBP5, STXBP6 and related proteins; Syntaxin binding protein 5 (STXBP5, also called Tomosyn), as well as its relative Syntaxin binding protein 6 (STXBP6, also called Amisyn) contains a C-terminal R-SNARE-like domain, which allows it to assemble into SNARE complexes, which in turn makes the complexes inactive and inhibits exocytosis. In general, SNARE (soluble N-ethylmaleimide-sensitive factor attachment protein receptor) proteins consist of coiled-coil helices (called SNARE motifs) which mediate the interactions between SNARE proteins, and a transmembrane domain. The SNARE complex mediates membrane fusion, important for trafficking of newly synthesized proteins, recycling of pre-existing proteins and organelle formation. SNARE proteins are classified into four groups, Qa-, Qb-, Qc- and R-SNAREs, depending on whether the residue in the hydrophilic center layer of the four-helical bundle is a glutamine (Q) or arginine (R). Qc-, as well as Qa- and Qb-SNAREs, are localized to target organelle membranes, while R-SNARE is localized to vesicle membranes. They form unique complexes consisting of one member of each subgroup, that mediate fusion between a specific type of vesicles and their target organelle.


Pssm-ID: 277226  Cd Length: 61  Bit Score: 44.55  E-value: 1.76e-06
                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*.
gi 1207153078 233 GNVMRRASQVLSERGERLMKADDKTSHMLHGARHFAEAAQRLALKQ 278
Cdd:cd15873    15 ASAAARARQALNERGEKLSELEDRTAEMEDNAESFASTAKELAKKY 60
 
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.
Help | Disclaimer | Write to the Help Desk
NCBI | NLM | NIH