Abstract:Munc13-1 plays a central role in neurotransmitter release through its conserved C-terminal region, which includes a diacyglycerol (DAG)-binding C1 domain, a Ca2+/PIP2-binding C2B domain, a MUN domain and a C2C domain. Munc13-1 was proposed to bridge synaptic vesicles to the plasma membrane in two different orientations mediated by distinct interactions of the C1C2B region with the plasma membrane: i) one involving a polybasic face that yields a perpendicular orientation of Munc13-1 and hinders release; and ii)… Show more
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