The synaptic SNARE complex is a parallel four-stranded helical bundle

M. A. Poirier, W. Xiao, J. C. Macosko, C. Chan, Y. K. Shin, M. K. Bennett

Research output: Contribution to journalArticlepeer-review


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 M(r)) 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.

Original languageEnglish (US)
Pages (from-to)765-769
Number of pages5
JournalNature Structural Biology
Issue number9
StatePublished - 1998
Externally publishedYes

ASJC Scopus subject areas

  • Structural Biology
  • Biochemistry
  • Genetics


Dive into the research topics of 'The synaptic SNARE complex is a parallel four-stranded helical bundle'. Together they form a unique fingerprint.

Cite this