Entrez Summary: This gene encodes a novel neural/endocrine-specific cytosolic and peripheral membrane protein required for the Ca2+-regulated exocytosis of secretory vesicles. The protein acts at a stage in exocytosis that follows ATP-dependent priming, which involves the essential synthesis of phosphatidylinositol 4,5-bisphosphate (PtdIns(4,5)P2). Alternative splicing has been observed at this locus and three variants, encoding distinct isoforms, are described. [provided by RefSeq, Aug 2008].
UniProt Summary: Calcium-binding protein involved in exocytosis of vesicles filled with neurotransmitters and neuropeptides. Probably acts upstream of fusion in the biogenesis or maintenance of mature secretory vesicles. Regulates catecholamine loading of DCVs. May specifically mediate the Ca(2+)-dependent exocytosis of large dense-core vesicles (DCVs) and other dense-core vesicles by acting as a PtdIns(4,5)P2-binding protein that acts at prefusion step following ATP-dependent priming and participates in DCVs-membrane fusion. However, it may also participate in small clear synaptic vesicles (SVs) exocytosis and it is unclear whether its function is related to Ca(2+) triggering (By similarity). {ECO:0000250}.
Pfam DomainsGO Terms
Pfam Domains
DUF1041
GO Terms
dense core granule exocytosis
calcium-ion regulated exocytosis
synaptic vesicle exocytosis
positive regulation of exocytosis
presynapse
signal release from synapse
neurotransmitter secretion
synaptic vesicle cycle
vesicle-mediated transport in synapse
cytoplasmic vesicle membrane
lipid binding
signal release
neurotransmitter transport
regulation of exocytosis
glutamatergic synapse
regulation of neurotransmitter levels
positive regulation of secretion by cell
anterograde trans-synaptic signaling
chemical synaptic transmission
positive regulation of secretion
trans-synaptic signaling
synaptic signaling
protein kinase binding
cell junction
regulation of vesicle-mediated transport
regulated exocytosis
regulation of secretion by cell
exocytosis
regulation of secretion
positive regulation of transport
secretion by cell
export from cell
cell-cell signaling
secretion
protein transport
peptide transport
amide transport
establishment of protein localization
establishment of localization in cell
nitrogen compound transport
regulation of transport
vesicle-mediated transport
CRISPR Data
Compound HitMost Correlated Genes in ChemogenomicsTissues where Essential in the Avana Dataset (DepMap 20Q1)