Inositol 1,4,5-trisphosphate receptor-associated cGMP kinase substrate; Plays a role as NO/PRKG1-dependent regulator of IP3- induced calcium release; its phosphorylation by PRKG1 inhibits bradykinin and IP3-induced calcium release from intracellular stores. Recruits PRKG1 to the endoplasmic reticulum and may mediate the assembly of PRKG1 and ITPR1 in a macrocomplex. Involved in PRKG1 signaling cascade leading to inhibition of platelet activation and aggregation. Mediates also NO-dependent inhibition of calcium signaling in gastrointestinal smooth muscle contributing to NO-dependent relaxation.
Synonyms: MRVI1, MRVI1p, hMRVI1, E9PJ61, E9PNK7 ...