2bu0

Publication Abstract from PubMed

The heterotrimeric synaptic soluble N-ethylmaleimide-sensitive factor attachment protein receptor (SNARE) complex, consisting of the synaptic vesicle-associated membrane protein 2 (VAMP2) and presynaptic plasma membrane proteins SNAP-25 (synaptosome-associated protein of 25,000 Mr) and syntaxin 1A, is a critical component of the exocytotic machinery. We have used spin labeling electron paramagnetic resonance spectroscopy to investigate the structural organization of this complex, particularly the two predicted helical domains contributed by SNAP-25. Our results indicate that the N- and C-terminal domains of SNAP-25 are parallel to each other and to the C-terminal domain of syntaxin 1A. Based on these findings, we propose a parallel four-stranded coiled coil model for the structure of the synaptic SNARE complex.

The synaptic SNARE complex is a parallel four-stranded helical bundle.,Poirier MA, Xiao W, Macosko JC, Chan C, Shin YK, Bennett MK Nat Struct Biol. 1998 Sep;5(9):765-9. PMID:9731768^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.