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Syntaxin 6 N terminal protein domain
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Syntaxin 6 N terminal protein domain : ウィキペディア英語版
Syntaxin 6 N terminal protein domain

In molecular biology the protein domain Syntaxin 6 N terminal protein domain is a soluble N-ethylmaleimide-sensitive factor attachment protein receptor (SNARE) found in endosomal transport vesicles. It is part of the family, of target SNAREs (t-SNAREs). It is a vital aid to exporting and importing cell cargo through a process called cell trafficking. Its SNARE motif shows significant homology to both syntaxin 1a and S25C, indicating similarity through evolutionary conservation. The structure of the syntaxin 6 N-terminal domain shows strong structural similarity with the N-terminal domains of syntaxin 1a, Sso1p, and Vam3p; despite a very low level of sequence similarity. SNARE functions essentially as a tether to hold the vesicle. The cytoplasmic regions of SNARE found on transport vesicles and target membranes interact, then a four-helix coiled coil forms. This links the cell membrane and vesicles together in such a way that it overcomes the energetic barrier to fusing two lipid bilayers. This is the way cell cargo is exchanged. This particular entry focuses on the N-terminal domain of Syntaxin 6.〔 〕
==Structure==
Members of this entry, which are found in the amino terminus of various SNARE proteins, adopt a structure consisting of an antiparallel three-helix bundle. Their exact function has not been determined, though it is known that they regulate the SNARE motif, as well as mediate various protein-protein interactions involved in membrane-transport.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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