title: Drosophila syntaxin 16 is a Q-SNARE implicated in Golgi dynamics.
abstract: SNARE isoforms appear to regulate specific intracellular membrane trafficking steps. To identify new SNARE proteins in Drosophila melanogaster we used a yeast two-hybrid screen to search for proteins that interact with SNAP. Here we report the identification of the Drosophila homologue of syntaxin 16. dsyntaxin 16 binds SNAP in a concentration-dependent fashion and genetically interacts with NSF2. Like its mammalian homologue, dsyntaxin 16 is ubiquitously expressed and appears to be localized to the Golgi apparatus. In addition, membranes containing dsyntaxin 16 become aggregated upon Brefeldin A treatment and are dispersed during meiosis. Inhibition of dsyntaxin 16 function by overexpression of truncated forms in cultured Schneider cells indicates that dsyntaxin 16 may selectively regulate Golgi dynamics.
authors.affiliation: Programme in Cell Biology The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, Ontario M5G 1x8 Canada.
authors.forename: Hao
authors.initials: H
authors.lastname: Xu
authors.forename: Gabrielle L
authors.initials: GL
authors.lastname: Boulianne
authors.forename: William S
authors.initials: WS
authors.lastname: Trimble
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D002352:Carrier Proteins / Q000378:metabolism; D002460:Cell Line; D003001:Cloning, Molecular; D004331:Drosophila melanogaster / Q000166:cytology* / Q000235:genetics / Q000378:metabolism*; D018507:Gene Expression Regulation, Developmental; D006056:Golgi Apparatus / Q000378:metabolism*; D006801:Humans; D008565:Membrane Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D008969:Molecular Sequence Data; D052066:N-Ethylmaleimide-Sensitive Proteins; D009419:Nerve Tissue Proteins / Q000378:metabolism; D050600:SNARE Proteins; D012469:Salivary Glands / Q000166:cytology / Q000378:metabolism; D017386:Sequence Homology, Amino Acid; D052067:Soluble N-Ethylmaleimide-Sensitive Factor Attachment Proteins; D051438:Syntaxin 16; D033921:Vesicular Transport Proteins; D014921:Wings, Animal / Q000254:growth & development / Q000378:metabolism
chemical_list: D002352:Carrier Proteins; D008565:Membrane Proteins; D009419:Nerve Tissue Proteins; C498738:Nsf2 protein, Drosophila; D050600:SNARE Proteins; D052067:Soluble N-Ethylmaleimide-Sensitive Factor Attachment Proteins; D051438:Syntaxin 16; D033921:Vesicular Transport Proteins; C498732:comt protein, Drosophila; D052066:N-Ethylmaleimide-Sensitive Proteins