Inositol Polyphosphate-5-Phosphatase (INPP5D) Antibody – Rabbit Polyclonal

This gene is a member of the inositol polyphosphate-5-phosphatase (INPP5) family and encodes a protein with an N-terminal SH2 domain, an inositol phosphatase domain, and two C-terminal protein interaction domains. Expression of this protein is restricted to hematopoietic cells where its movement from the cytosol to the plasma membrane is mediated by tyrosine phosphorylation. At the plasma membrane, the protein hydrolyzes the 5' phosphate from phosphatidylinositol (3,4,5)-trisphosphate and inositol-1,3,4,5-tetrakisphosphate, thereby affecting multiple signaling pathways. The protein is also partly localized to the nucleus, where it may be involved in nuclear inositol phosphate signaling processes. Overall, the protein functions as a negative regulator of myeloid cell proliferation and survival. Mutations in this gene are associated with defects and cancers of the immune system. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, Feb 2014]

SHIP: an SH2-containing inositol phosphatase. A hemopoietic-specific phosphatase that regulates cell survival, growth, cell cycle arrest and apoptosis. Hydrolyzes Ins(1,3,4,5)P4 and PtdIns(3,4,5)P3. A cytosolic protein with a SH2 domain in its N-terminus and two NPXY Shc binding motifs at its C-terminus. Upon receptor cross-linking, SHIP is first recruited to the plasma membrane by its SH2, followed by tyrosine phosphorylation on the NPXY motif. Both membrane relocalization and phosphorylation are essential for its regulatory function. Associates with SHC after cytokine stimulation.

Protein type: Phosphatase, lipid; Motility/polarity/chemotaxis; EC 3.1.3.86

Chromosomal Location of Human Ortholog: 2q37.1

Cellular Component: membrane; cytosol

Molecular Function: protein binding; inositol-polyphosphate 5-phosphatase activity; SH3 domain binding

Biological Process: inositol phosphate metabolic process; apoptosis; phospholipid metabolic process; phosphatidylinositol biosynthetic process; phosphoinositide dephosphorylation; signal transduction; blood coagulation; leukocyte migration; phosphate metabolic process; T cell receptor signaling pathway