Enables protein-macromolecule adaptor activity and transmembrane transporter binding activity. A structural constituent of presynaptic active zone. Involved in several processes, including neurotransmitter secretion; regulation of calcium-dependent activation of synaptic vesicle fusion; and regulation of nervous system process. Acts upstream of or within several processes, including adenylate cyclase-modulating G protein-coupled receptor signaling pathway; regulation of exocytosis; and signal release. Located in inhibitory synapse. Is active in GABA-ergic synapse and glutamatergic synapse. Is expressed in midbrain and testis. Orthologous to human RIMS2 (regulating synaptic membrane exocytosis 2).
MGI Description
PHENOTYPE: Mice homozygous for a knock-out allele show reduced body size, aberrant insulin granule exocytosis, and impaired secretion of hormones associated with glucose homeostasis. Mice homozygous for another knock-out allele show a slightly reduced body size, abnormal maternal behavior and premature death. [provided by MGI curators]