Description
Product Characteristics:
Inositol 1,4,5-triphosphate (IP3) functions as a second messenger for a myriad of extracellular stimuli including hormones, growth factors and neurotransmitters. Receptor tyrosine kinases indirectly increase the intracellular levels of IP3 through the activation of phospholipases such as phospholipase C (PLC), which convert phosphatidylinositol-4,5 bisphosphate into IP3 and diacylglycerol (DAG). The inositol 1,4,5-triphosphate receptor, IP3R, acts as an inositol triphosphate (IP3)-gated calcium release channel in a variety of cell types. Three IP3 receptor subtypes have been described and are designated IP3R-I, IP3R-II and IP3R-III. IP3R-I is the predominant IP3R subtype expressed in neuronal tissues and the central nervous system, but is also expressed at high levels in the liver.
Subcellular location: Cytoplasm, Cell membrane
Synonyms: IP3R-III, IP3 receptor isoform 3, 4 antibody 5-trisphosphate receptor, 5-trisphosphate receptor type 3, FLJ36205, Inositol 1, Inositol 1,4,5 trisphosphate receptor type 3, IP3 receptor, IP3R 3, IP3R, IP3R3, ITPR 3, ITPR3, ITPR3_HUMAN, Type 3 inositol 1, Type 3 inositol 1,4,5 trisphosphate receptor, Type 3 InsP3 receptor.
Target Information: This gene encodes a receptor for inositol 1,4,5-trisphosphate, a second messenger that mediates the release of intracellular calcium. The receptor contains a calcium channel at the C-terminus and the ligand-binding site at the N-terminus. Knockout studies in mice suggest that type 2 and type 3 inositol 1,4,5-trisphosphate receptors play a key role in exocrine secretion underlying energy metabolism and growth. [provided by RefSeq, Aug 2010]