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Neurotransmitter Release. High voltage . Low voltage. Mechanism of Exocytosis synapsin s anchor vesicle to cytoskeleton Ca 2+ influx activates Ca 2+ /calmodulin dependent kinase (CaMK) phosporylaton of synapsin I release of vesicle from cytoskeleton move to active zone
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Neurotransmitter Release
High voltage Low voltage
Mechanism of Exocytosis synapsins anchor vesicle to cytoskeleton Ca2+ influx activates Ca2+/calmodulin dependent kinase (CaMK) phosporylaton of synapsin I release of vesicle from cytoskeleton move to active zone Rab3A binds to vesicle hydrolysis of Rab GTP to GDP + PO4 targeted to docking site at active zone interaction of v-SNARES and t-SNARES docking and membrane fusion exocytosis and release of Rab into cytoplasm t-snares = syntaxin and SNAP25 v-snare = synaptobrevin (VAMP)