VAMP2: a member of the vesicle-associated membrane protein (VAMP)/synaptobrevin family. Synaptobrevins/VAMPs, syntaxins, and the 25-kD synaptosomal-associated protein SNAP25 are the main components of a protein complex involved in the docking and/or fusion of synaptic vesicles with the presynaptic membrane. Thought to participate in neurotransmitter release at a step between docking and fusion. The protein forms a stable complex with syntaxin, synaptosomal-associated protein, 25 kD, and synaptotagmin. It also forms a distinct complex with synaptophysin.
Protein type: Motility/polarity/chemotaxis; Membrane protein, integral; Vesicle
Chromosomal Location of Human Ortholog: 17p13.1
Cellular Component: cell junction; clathrin-coated vesicle; cytoplasmic vesicle; cytosol; integral to plasma membrane; intracellular membrane-bound organelle; membrane; neuron projection; perinuclear region of cytoplasm; plasma membrane; secretory granule; secretory granule membrane; SNARE complex; synapse; synaptic vesicle; synaptic vesicle membrane; terminal button; trans-Golgi network; vesicle; voltage-gated potassium channel complex; zymogen granule membrane
Molecular Function: calcium-dependent protein binding; calmodulin binding; identical protein binding; myosin binding; phospholipid binding; protein binding; protein C-terminus binding; protein complex binding; protein self-association; SNAP receptor activity; SNARE binding; syntaxin binding; syntaxin-1 binding
Biological Process: calcium ion-dependent exocytosis; cellular protein metabolic process; cellular response to insulin stimulus; energy reserve metabolic process; eosinophil degranulation; exocytosis; glutamate secretion; Golgi to plasma membrane protein transport; natural killer cell degranulation; neurotransmitter secretion; neutrophil degranulation; post-Golgi vesicle-mediated transport; protein complex assembly; protein transport; regulation of exocytosis; regulation of insulin secretion; response to glucose stimulus; synaptic transmission; synaptic vesicle exocytosis; vesicle fusion; vesicle-mediated transport
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