SynaptotagminsSynaptotagmin IISynaptotagmin ICalcium-Binding ProteinsExocytosisNerve Tissue ProteinsMembrane GlycoproteinsPC12 CellsSynaptic VesiclesCalciumSNARE ProteinsProtein IsoformsMolecular Sequence DataNeurotransmitter AgentsAmino Acid SequencePhospholipidsProtein Structure, TertiarySequence Homology, Amino AcidProtein BindingMembrane ProteinsRecombinant ProteinsCell MembraneSequence AlignmentSynapses