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.

                         10        20        30
                 ....*....|....*....|....*....|....*
gi 1958667934 26 TQGEMVNNIERNVVNSVDYVEHAKEETKKAIKYQS 60
Cdd:cd15882   35 TQGEMINNIEKNVHNAVEYVEHAKEETKKAVKYQS 69

SNARE motif of syntaxin 2; Syntaxin 2 (STX2), also known as epimorphin (EPM or EPIM), may interact with SNAP-23 (Qb/c) and genetic varioations are associated with type 1 von Willebrand disease (VWD). Syntaxin 2 is a member of the Qa 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.

                         10        20        30
                 ....*....|....*....|....*....|....*
gi 1958667934 26 TQGEMVNNIERNVVNSVDYVEHAKEETKKAIKYQS 60
Cdd:cd15882   35 TQGEMINNIEKNVHNAVEYVEHAKEETKKAVKYQS 69

t-SNARE complex subunit, syntaxin [Intracellular trafficking and secretion];

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|..
gi 1958667934  25 GTQGEMVNNIERNVVNSVDYVEHAKEETKKAIKYQSKARRKK 66
Cdd:COG5325   219 GEQGELVDRIDFNIENTSDNLKNANKELEKAPAHQRRTKKCR 260

SNARE motif of syntaxin 2; Syntaxin 2 (STX2), also known as epimorphin (EPM or EPIM), may interact with SNAP-23 (Qb/c) and genetic varioations are associated with type 1 von Willebrand disease (VWD). Syntaxin 2 is a member of the Qa 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.

                         10        20        30
                 ....*....|....*....|....*....|....*
gi 1958667934 26 TQGEMVNNIERNVVNSVDYVEHAKEETKKAIKYQS 60
Cdd:cd15882   35 TQGEMINNIEKNVHNAVEYVEHAKEETKKAVKYQS 69

SNARE motif of syntaxin 3; Syntaxin 3 (STX3) has been shown to form a complex with VAMP8 (R-SNARE) and SNAP-23 (Qb/c) in mast cells. Mutations have been implicated in human microvillus inclusion disease (MVID), a disorder of the differentiation of intestinal epithelium. Syntaxin 3 is a member of the Qa 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.

                         10        20        30
                 ....*....|....*....|....*....|....*
gi 1958667934 26 TQGEMVNNIERNVVNSVDYVEHAKEETKKAIKYQS 60
Cdd:cd15881   35 NQGEMLDNIELNVMKTVDHVEKARDETKKAVKYQS 69

SNARE motif of syntaxin 1 and related proteins; 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-, 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. Their SNARE motifs form twisted and parallel heterotetrameric helix bundles. This subgroup of the Qa SNAREs includes syntaxin 1, syntaxin 11, syntaxin 19, syntaxin 2, syntaxin 3, syntaxin 4 and related proteins.

                         10        20
                 ....*....|....*....|....*....
gi 1958667934 26 TQGEMVNNIERNVVNSVDYVEHAKEETKK 54
Cdd:cd15848   35 SQGELIDNIEYNVEKAKDYVEKGNEELKK 63

SNARE motif of syntaxin 12; Syntaxin 12 (STX12, also known as STX13 and STX14) forms a complex with SNAP25 (Qb/Qc) or SNAP29 (Qb/Qc) and VAMP2 or VAMP3 (R-SNARE) and plays a role in plasma membrane to early endosome transport. Syntaxin 12 is a member of the Qa subgroup of SNARE (soluble N-ethylmaleimide-sensitive factor attachment protein receptor) proteins, which consist of coiled-coil helices (called SNARE motifs) which 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.

                         10        20        30
                 ....*....|....*....|....*....|....*.
gi 1958667934 27 QGEMVNNIERNVVNSVDYVEHAKEETKKAIKYQSKA 62
Cdd:cd15876   32 QGDMIDSIEANVESAEVHVERASEQLQRAAYYQKKS 67

SNARE motif, subgroup Qa; 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-, 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. 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.

                         10        20
                 ....*....|....*....|....*...
gi 1958667934 27 QGEMVNNIERNVVNSVDYVEHAKEETKK 54
Cdd:cd15840   32 QGEQIDNIENNIEEAAANTEEANKELRK 59

Helical region found in SNAREs; All alpha-helical motifs that form twisted and parallel four-helix bundles in target soluble N-ethylmaleimide-sensitive factor (NSF) attachment protein (SNAP) receptor proteins. This motif found in "Q-SNAREs".

                          10        20
                  ....*....|....*....|....*....
gi 1958667934  27 QGEMVNNIERNVVNSVDYVEHAKEETKKA 55
Cdd:smart00397 38 QGEQLDRIEDNVDDADVNLKKANKRLKKA 66

SNARE motif of syntaxin 11; Syntaxin 11 (also known as STX11, FHL4, HLH4, HPLH4) is present on endosomal membranes, including late endosomes and lysosomes in macrophages, and has been shown to bind Vti1b and regulate the availability of Vti1b to form other SNARE-complexes. Mutations in human STX11 has been linked to familial hemophagocytic lymphohistiocytosis type-4 (FHL-4), an autosomal recessive disorder of immune dysregulation. Syntaxin 11 is a member of the Qa 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.

                         10        20
                 ....*....|....*....|....*...
gi 1958667934 27 QGEMVNNIERNVVNSVDYVEHAKEETKK 54
Cdd:cd15878   36 QADTLNNIELNVEKTQDYVGKAKAQVKK 63

SNARE motif of syntaxin 19; Syntaxin 19 has been shown to have the potential to form SNARE complexes with SNAP-23, 25 and 29 (Qb/Qc) and VAMP3 and VAMP8 (R-SNARE), indicating a role in post-Golgi trafficking or plasma membrane fusion. Syntaxin 19 is member of the Qa 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.

                         10        20
                 ....*....|....*....|....*..
gi 1958667934 27 QGEMVNNIERNVVNSVDYVEHAKEETK 53
Cdd:cd15879   36 QGEMINNIEISVNNTQEYVQASKEKFG 62