FunctionMay be involved in Ca(2+)-dependent exocytosis of secretory vesicles through Ca(2+) and phospholipid binding to the C2 domain or may serve as Ca(2+) sensors in the process of vesicular trafficking and exocytosis.
Sequence similaritiesBelongs to the synaptotagmin family. Contains 2 C2 domains.
Post-translational modificationsUbiquitinated and targeted to the proteasome complex for degradation.
Cellular localizationMembrane. Cell junction > synapse. Cytoplasmic vesicle > secretory vesicle > synaptic vesicle membrane. In substantia nigra, observed in neuronal cell bodies and neurites. Found in the core of the Lewy bodies in the brain of sporadic Parkinson disease patients.