reference- http://www.biologynews.net/archives/2012/01/24/membrane_fusion_a_mystery_no_more.html
The many factors that contribute to how cells communicate and function at the most basic level are still not fully understood, but researchers at Baylor College of Medicine have uncovered a mechanism that helps explain how intracellular membranes fuse, and in the process, created a new physiological membrane fusion model These vesicles migrate through the cell, meet other vesicles and fuse. That fusion process is, in part, mediated through SNARE proteins that bring the vesicles together. How this happens has been in question for years."
Researchers found that when this tethering factor was removed, the SNARE proteins were unstable and there was no fusion.
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