How could SNARE proteins open a fusion pore?
Qinghua Fang1, Manfred Lindau2
1School of Applied and Engineering Physics, Cornell University, Ithaca, New York; and Laboratory for Nanoscale Cell Biology, Max-Planck-Institute for Biophysical Chemistry, Göttingen, Germany.
Physiology (Bethesda, Md.)
|July 3, 2014
Summary
The SNARE complex, essential for vesicle fusion in neurosecretory cells, may form fusion pores through conformational changes. This involves the movement of transmembrane domains within the Soluble NSF Attachment protein REceptor complex.
Area of Science:
- Cell Biology
- Neuroscience
- Molecular Biology
Background:
- The SNARE complex is crucial for membrane fusion events in neurosecretory cells.
- It comprises synaptobrevin 2 (VAMP2), syntaxin, and SNAP-25.
Purpose of the Study:
- To review the hypothesis that SNARE complex conformational changes drive fusion pore formation.
- To explore the role of transmembrane domain movement in this process.
Main Methods:
- This is a review article, synthesizing existing research and hypotheses.
- Focuses on theoretical mechanisms of SNARE complex function.
Main Results:
- The review discusses the proposed mechanism of fusion pore formation.
- Highlights the potential role of conformational changes in the SNARE complex.
Conclusions:
- The conformational change of the SNARE complex, driven by transmembrane domain movement, is a plausible mechanism for fusion pore formation in neurosecretory cells.
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