rdf:type |
|
lifeskim:mentions |
|
pubmed:issue |
4
|
pubmed:dateCreated |
2001-3-29
|
pubmed:abstractText |
Assembly of the soluble N-ethylmaleimide sensitive factor attachment protein receptor (SNARE) complex is an essential step for neurotransmitter release in synapses. The presynaptic plasma membrane associated proteins (t-SNAREs), SNAP-25 (synaptosome-associated protein of 25,000 Da) and syntaxin 1A may form an intermediate complex that later binds to vesicle-associated membrane protein 2 (VAMP2). Using spin labeling electron paramagnetic resonance (EPR), we found that the two t-SNARE proteins assemble into a parallel four-helix bundle that consists of two identical syntaxin 1A components and the N-terminal and C-terminal domains of SNAP-25. Although the structure is generally similar to that of the final SNARE complex, the middle region of the helical bundle appears more flexible in the t-SNARE complex. Such flexibility might facilitate interactions between VAMP2 and the t-SNARE complex.
|
pubmed:language |
eng
|
pubmed:journal |
|
pubmed:citationSubset |
IM
|
pubmed:chemical |
|
pubmed:status |
MEDLINE
|
pubmed:month |
Apr
|
pubmed:issn |
1072-8368
|
pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:volume |
8
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
308-11
|
pubmed:dateRevised |
2006-11-15
|
pubmed:meshHeading |
pubmed-meshheading:11276248-Electron Spin Resonance Spectroscopy,
pubmed-meshheading:11276248-Macromolecular Substances,
pubmed-meshheading:11276248-Membrane Proteins,
pubmed-meshheading:11276248-Models, Molecular,
pubmed-meshheading:11276248-Nerve Tissue Proteins,
pubmed-meshheading:11276248-Neurons,
pubmed-meshheading:11276248-Pliability,
pubmed-meshheading:11276248-Protein Structure, Secondary,
pubmed-meshheading:11276248-Qa-SNARE Proteins,
pubmed-meshheading:11276248-SNARE Proteins,
pubmed-meshheading:11276248-Spin Labels,
pubmed-meshheading:11276248-Synaptosomal-Associated Protein 25,
pubmed-meshheading:11276248-Temperature,
pubmed-meshheading:11276248-Vesicular Transport Proteins
|
pubmed:year |
2001
|
pubmed:articleTitle |
The neuronal t-SNARE complex is a parallel four-helix bundle.
|
pubmed:affiliation |
Department of Chemistry, University of California, Berkeley, California 94720, USA.
|
pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, Non-U.S. Gov't
|