Cellular calcium signaling is controlled by the production of inositol phosphates (IPs) by phospholipase C in response to extracellular signals. The IP signaling molecules are inactivated by a family of inositol polyphosphate-5-phosphatases (5-phosphatases). This gene encodes the type II 5-phosphatase. The protein is localized to the cytosol and mitochondria, and associates with membranes through an isoprenyl modification near the C-terminus. Several alternatively spliced transcript variants of this gene have been described, but the full-length nature of some of these variants has not been determined.
INPP5B; inositol polyphosphate-5-phosphatase, 75kDa; inositol polyphosphate 5 phosphatase, 75kD; type II inositol-1,4,5-trisphosphate 5-phosphatase; 4; 5-trisphosphate 5-phosphatase; 5PTase; 75 kDa inositol polyphosphate 5 phosphatase; 75 kDa inositol polyphosphate-5-phosphatase; 75kDa; EC 18.104.22.168; I5P2_HUMAN; Inositol polyphosphate 5-phosphatase II; Inositol polyphosphate-5-phosphatase B; Inpp5b protein; INPP5P; MGC65156; MGC71303; OTTHUMP00000004726; OTTHUMP00000004727; OTTHUMP00000004728; Phosphoinositide 5 phosphatase; Phosphoinositide 5-phosphatase; Type II inositol 1,4,5 trisphosphate 5 phosphatase; Type II inositol-1