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Conserved domains on  [gi|34222920|sp|Q8R3T5|]
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RecName: Full=Syntaxin-binding protein 6

Protein Classification

STXBP6 family PH domain-containing protein; PH domain-containing protein( domain architecture ID 10199836)

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

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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 ...
 2-131 9.91e-94

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: 269.51  E-value: 9.91e-94
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 34222920   2 SAKSAISKEIFAPLDERMLGAVQVKRRTKKKIPFLATGGQGEYLTYICLSVTNKKPTQASITKVKQFEGSTSFVRRSQWM 81
Cdd:cd14681   1 SAKSAISKEIFAPRDERMLGAVQVKRRTKKKIPFLATGGQGEYLTYICLSVTNKKPAQVFITKVKQFEGSTSFVRRSQWM 80

                        90       100       110       120       130
                ....*....|....*....|....*....|....*....|....*....|
gi 34222920  82 LEQLRQVNGIDPNRDSAEFDLLFENAFDQWVASTASEKCTFFQILHHTCQ 131
Cdd:cd14681  81 LEQLRQVNGIDPNKDSPEFDLVFDNGFDQWVASSASEKCTFFQILHHTCQ 130
R-SNARE_STXBP6 cd15892
SNARE domain of STXBP6; Syntaxin binding protein 6 (STXBP6, also called Amisyn), as well as ...
 149-210 2.45e-40

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: 131.81  E-value: 2.45e-40
                        10        20        30        40        50        60
                ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 34222920 149 MGGNSILHSAADSVTSAVQKASQALNERGERLGRAEEKTEDMKNSAQQFAETAHKLAMKHKC 210
Cdd:cd15892   1 MGGNSILHSAADSVTSAVQKASQALNERGERLGRAEEKTEDMKNSAQQFAETAHKLAMKHKC 62
 
Name Accession Description Interval E-value
PH-STXBP6 cd14681
PH-like domain of Syntaxin binding protein 6; Syntaxin binding protein 6 (STXBP6, also called ...
 2-131 9.91e-94

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: 269.51  E-value: 9.91e-94
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 34222920   2 SAKSAISKEIFAPLDERMLGAVQVKRRTKKKIPFLATGGQGEYLTYICLSVTNKKPTQASITKVKQFEGSTSFVRRSQWM 81
Cdd:cd14681   1 SAKSAISKEIFAPRDERMLGAVQVKRRTKKKIPFLATGGQGEYLTYICLSVTNKKPAQVFITKVKQFEGSTSFVRRSQWM 80

                        90       100       110       120       130
                ....*....|....*....|....*....|....*....|....*....|
gi 34222920  82 LEQLRQVNGIDPNRDSAEFDLLFENAFDQWVASTASEKCTFFQILHHTCQ 131
Cdd:cd14681  81 LEQLRQVNGIDPNKDSPEFDLVFDNGFDQWVASSASEKCTFFQILHHTCQ 130
R-SNARE_STXBP6 cd15892
SNARE domain of STXBP6; Syntaxin binding protein 6 (STXBP6, also called Amisyn), as well as ...
 149-210 2.45e-40

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: 131.81  E-value: 2.45e-40
                        10        20        30        40        50        60
                ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 34222920 149 MGGNSILHSAADSVTSAVQKASQALNERGERLGRAEEKTEDMKNSAQQFAETAHKLAMKHKC 210
Cdd:cd15892   1 MGGNSILHSAADSVTSAVQKASQALNERGERLGRAEEKTEDMKNSAQQFAETAHKLAMKHKC 62
Sec3-PIP2_bind pfam15277
Exocyst complex component SEC3 N-terminal PIP2 binding PH; This is the N-terminal domain of ...
 41-132 4.16e-21

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: 83.33  E-value: 4.16e-21
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 34222920    41 QGEYLTYICLSVTNKKptQASITKVKQFEGStSFVRRSQWMLEQLRQVNGIDPNRDsaeFDLLFeNAFDQWVASTASEKC 120
Cdd:pfam15277   1 KKKKPRYLCLSVTKSG--RVFLHKVKENSNG-SFSIGKTWPLKELRLVEGINPDKG---FDLTF-DKPYYWQANSPKEKN 73

                          90
                  ....*....|..
gi 34222920   121 TFFQILHHTCQR 132
Cdd:pfam15277  74 AFIRSLVKLYRK 85
Synaptobrevin pfam00957
Synaptobrevin;
175-207 7.42e-04

Synaptobrevin;


Pssm-ID: 395764  Cd Length: 89  Bit Score: 37.13  E-value: 7.42e-04
                          10        20        30
                  ....*....|....*....|....*....|...
gi 34222920   175 ERGERLGRAEEKTEDMKNSAQQFAETAHKLAMK 207
Cdd:pfam00957  28 ERGEKLDLLVDKTENLQSSAQQFRRQARKLKRK 60
 
Name Accession Description Interval E-value
PH-STXBP6 cd14681
PH-like domain of Syntaxin binding protein 6; Syntaxin binding protein 6 (STXBP6, also called ...
 2-131 9.91e-94

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: 269.51  E-value: 9.91e-94
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 34222920   2 SAKSAISKEIFAPLDERMLGAVQVKRRTKKKIPFLATGGQGEYLTYICLSVTNKKPTQASITKVKQFEGSTSFVRRSQWM 81
Cdd:cd14681   1 SAKSAISKEIFAPRDERMLGAVQVKRRTKKKIPFLATGGQGEYLTYICLSVTNKKPAQVFITKVKQFEGSTSFVRRSQWM 80

                        90       100       110       120       130
                ....*....|....*....|....*....|....*....|....*....|
gi 34222920  82 LEQLRQVNGIDPNRDSAEFDLLFENAFDQWVASTASEKCTFFQILHHTCQ 131
Cdd:cd14681  81 LEQLRQVNGIDPNKDSPEFDLVFDNGFDQWVASSASEKCTFFQILHHTCQ 130
R-SNARE_STXBP6 cd15892
SNARE domain of STXBP6; Syntaxin binding protein 6 (STXBP6, also called Amisyn), as well as ...
 149-210 2.45e-40

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: 131.81  E-value: 2.45e-40
                        10        20        30        40        50        60
                ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 34222920 149 MGGNSILHSAADSVTSAVQKASQALNERGERLGRAEEKTEDMKNSAQQFAETAHKLAMKHKC 210
Cdd:cd15892   1 MGGNSILHSAADSVTSAVQKASQALNERGERLGRAEEKTEDMKNSAQQFAETAHKLAMKHKC 62
PH-SEC3_like cd14675
PH-like domain of Sec3-like protein; Fungal Sec3, as well as its homolog in higher eukaryotes ...
 2-131 5.33e-35

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: 120.01  E-value: 5.33e-35
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 34222920   2 SAKSAISKEIFAPLDERMLGAVQVKRRTKKKipflatggqgeylTYICLSVTNKKPTQASITKVKQFEGsTSFVRRSQWM 81
Cdd:cd14675   1 AIKQAIQRSLFSPAHERLIEDVEVSKGGKKK-------------RILFLCVSVTKPGQVRLHKVKKNDN-GSFKIGKTWN 66

                        90       100       110       120       130
                ....*....|....*....|....*....|....*....|....*....|
gi 34222920  82 LEQLRQVNGIDPNRDSAEFDLLFEnAFDQWVASTASEKCTFFQILHHTCQ 131
Cdd:cd14675  67 LKDLKKVDGKDPDKDTPEFDLHFD-KTYKWEASSVAEKEAFISSLVKLYR 115
PH-EXOC1 cd14683
PH-like domain of Exocyst complex component 1; Exocyst complex component 1 (EXOC1, also known ...
 2-131 1.82e-26

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: 98.10  E-value: 1.82e-26
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 34222920   2 SAKSAISKEIFAPLDERMLGAVQVKRRTKKKIPflatggqgeylTYICLSVTNKKPTQASITKVKQFEGSTsFVRRSQWM 81
Cdd:cd14683   1 AIRHALQREVFTPNDERLLAVVNVSKAGKKKKT-----------SFLCVAVTTERPVQVRLYQVKKSDKGV-YKKKRSWL 68

                        90       100       110       120       130
                ....*....|....*....|....*....|....*....|....*....|
gi 34222920  82 LEQLRQVNGIDPNRDSAEFDLLFENAFdQWVASTASEKCTFFQILHHTCQ 131
Cdd:cd14683  69 LRDLKTVDGKNPKKETPEFDLHFDKVY-KWVASNVQEKNAFISCLWKLCH 117
Sec3-PIP2_bind pfam15277
Exocyst complex component SEC3 N-terminal PIP2 binding PH; This is the N-terminal domain of ...
 41-132 4.16e-21

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: 83.33  E-value: 4.16e-21
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 34222920    41 QGEYLTYICLSVTNKKptQASITKVKQFEGStSFVRRSQWMLEQLRQVNGIDPNRDsaeFDLLFeNAFDQWVASTASEKC 120
Cdd:pfam15277   1 KKKKPRYLCLSVTKSG--RVFLHKVKENSNG-SFSIGKTWPLKELRLVEGINPDKG---FDLTF-DKPYYWQANSPKEKN 73

                          90
                  ....*....|..
gi 34222920   121 TFFQILHHTCQR 132
Cdd:pfam15277  74 AFIRSLVKLYRK 85
R-SNARE_STXBP5_6 cd15873
SNARE domain of STXBP5, STXBP6 and related proteins; Syntaxin binding protein 5 (STXBP5, also ...
 149-209 1.88e-19

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: 78.07  E-value: 1.88e-19
                        10        20        30        40        50        60
                ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 34222920 149 MGGNSILHSAADSVTSAVQKASQALNERGERLGRAEEKTEDMKNSAQQFAETAHKLAMKHK 209
Cdd:cd15873   1 GGGMKALRAKAGSAASAAARARQALNERGEKLSELEDRTAEMEDNAESFASTAKELAKKYK 61
R-SNARE_STXBP5 cd15893
SNARE domain of STXBP5; Syntaxin binding protein 5 (STXBP5, also called Tomosyn), as well as ...
 150-209 5.34e-09

SNARE domain of STXBP5; 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. Tomosyn contains an N-terminal WD40 repeat region and has been shown to form complexes with SNAP-25 and syntaxin 1a, as well as SNAP-23 and syntaxin 4. 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: 277246  Cd Length: 61  Bit Score: 50.81  E-value: 5.34e-09
                        10        20        30        40        50        60
                ....*....|....*....|....*....|....*....|....*....|....*....|
gi 34222920 150 GGNSILHSAADSVTSAVQKASQALNERGERLGRAEEKTEDMKNSAQQFAETAHKLAMKHK 209
Cdd:cd15893   2 GGIEGVKGAASGVVGELARARLALDERGQKLGELEERTAAMLASADSFSKHAHEMMLKYK 61
PH-EXOC1_like cd14682
PH-like domain of Exocyst complex component 1-like; Exocyst complex component 1-like proteins ...
 4-122 3.14e-05

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: 41.71  E-value: 3.14e-05
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 34222920   4 KSAISKEIFAPLDERMLGAVQVKRRTkkkipflatggQGEYltYICLSVTNKKPTQASITKVKQFEGSTSFVRRSQWMLE 83
Cdd:cd14682   5 KEDMQKKLFRPLGQTLYEFIEIEEQS-----------HGRH--YLCASVAKDKEVQISMVKHYRVCLDEKYERTEIWSLK 71

                        90       100       110
                ....*....|....*....|....*....|....*....
gi 34222920  84 QLRQVNGIDPNRDSAEFDLLFENAFDqWVASTASEKCTF 122
Cdd:cd14682  72 DLEMIDGKDADTDNPCFDMHFEEVRS-VEAYSCASKYAF 109
R-SNARE cd15843
SNARE motif, subgroup R-SNARE; SNARE (soluble N-ethylmaleimide-sensitive factor attachment ...
 153-209 2.01e-04

SNARE motif, subgroup R-SNARE; 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). In contrast to Qa-, Qb- and Qc-SNAREs that are localized to target organelle membranes, R-SNAREs are 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. Examples for members of the Qa SNAREs are syntaxin 18, syntaxin 5, syntaxin 16, and syntaxin 1.


Pssm-ID: 277196 [Multi-domain]  Cd Length: 60  Bit Score: 38.25  E-value: 2.01e-04
                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|....*..
gi 34222920 153 SILHSAADSVTSAVQKASQALNERGERLGRAEEKTEDMKNSAQQFAETAHKLAMKHK 209
Cdd:cd15843   4 SKVQEQVDEVKDVMQENIDKVLERGEKLEDLVDKTENLNESANAFKKQARKLKRKMW 60
R-SNARE_Snc1 cd15874
SNARE motif of Snc1; Saccharomyces cerevisiae SNARE protein Snc1p forms a complex with ...
 155-203 2.84e-04

SNARE motif of Snc1; Saccharomyces cerevisiae SNARE protein Snc1p forms a complex with synaptobrevin homolog Sso1p (Qa) and the SNAP-25 homolog Sec9p (Qb/c) which is involved in exocytosis. Snc1 is a member of the R-SNARE subgroup of SNARE (soluble N-ethylmaleimide-sensitive factor attachment protein receptor) proteins, which consist of coiled-coil helices (called SNARE motifs) that mediate the interactions between SNARE proteins, and a transmembrane domain. The 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, depending on whether the residue in the hydrophilic center layer of the four-helical bundle is a glutamine (Q) or arginine (R). Qa-, as well as 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.


Pssm-ID: 277227 [Multi-domain]  Cd Length: 60  Bit Score: 37.73  E-value: 2.84e-04
                        10        20        30        40
                ....*....|....*....|....*....|....*....|....*....
gi 34222920 155 LHSAADSVTSAVQKASQALNERGERLGRAEEKTEDMKNSAQQFAETAHK 203
Cdd:cd15874   6 LQKEIDGAVGIMRHNIEKVAQRGERLDSLQDKTDNLAVSAQGFRRGANR 54
Synaptobrevin pfam00957
Synaptobrevin;
175-207 7.42e-04

Synaptobrevin;


Pssm-ID: 395764  Cd Length: 89  Bit Score: 37.13  E-value: 7.42e-04
                          10        20        30
                  ....*....|....*....|....*....|...
gi 34222920   175 ERGERLGRAEEKTEDMKNSAQQFAETAHKLAMK 207
Cdd:pfam00957  28 ERGEKLDLLVDKTENLQSSAQQFRRQARKLKRK 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.
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