CST, 4039S, INPP4b Antibody

Polyclonal Antibody for studying INPP4B. Validated for Western Blotting. Highly specific and rigorously validated in-house, INPP4b Antibody (CST #4039) is ready to ship. Product Usage Information Western Blotting: 1:1000 Storage Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA and 50% glycerol. Store at -20°C. Do not aliquot the antibody. Protocol Available protocols: Western Blotting Specificity / Sensitivity INPP4b Antibody detects endogenous levels of total INPP4b protein. Species Reactivity: Human, Rat, Monkey Source / Purification Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to an amino acid sequence at the carboxyl terminus of human INPP4b. Antibodies are purified by Protein A and peptide affinity chromatography. Background Phosphatidylinositol lipids and phosphoinositides are important second messengers, their generation controlling many cellular events. Intracellular levels of these molecules are regulated by phosphoinositide kinases and phosphatases. One of the best characterized lipid kinases is phosphoinositide 3-kinase (PI3K), which is responsible for phosphorylation on the D-3 position of the inositide head group (1). This action of PI3K catalyzes the production of phosphatidylinositol-3,4,5-triphosphate by phosphorylating phosphatidylinositol (PI), phosphatidylinositol-4-phosphate (PIP), and phosphatidylinositol-4,5-bisphosphate (PIP2). Growth factors and hormones trigger this phosphorylation event, which in turn coordinates cell growth, cell cycle entry, cell migration, and cell survival (1). PTEN, the well characterized partnering phosphatase, reverses this process by removing the phosphate from PI(3,4,5)P3 at the D-3 position to generate PI(4,5)P2 (1,2). Dephosphorylation on the D-5 position to generate PI(3,4)P2 occurs through the action of SHIP1 or SHIP2 (3), and dephosphorylation on the D-4 position to generate PI(3)P can occur through the action of inositol polyphosphate 4-phosphatase isoenzymes type I (INPP4a) and type II (INPP4b) (4,5). While INPP4a has been implicated in neuronal survival and megakaryocyte lineage determination (6,7), less is understood about INPP4b. It has been shown that two splice variants of INPP4b occur in mice, each showing distinct tissue distribution and subcellular localization (5,8). Alternate Names 4-phosphatase II; inositol polyphosphate 4-phosphatase II; Inositol polyphosphate 4-phosphatase type II; inositol polyphosphate-4-phosphatase type II B; inositol polyphosphate-4-phosphatase, type II, 105kDa; INP4B; INPP4B; MGC132014; Type II inositol 3,4-bisphosphate 4-phosphatase; Type II inositol-3,4-bisphosphate 4-phosphatase Specification REACTIVITY: H R Mk SENSITIVITY: Endogenous MW (kDa): 110 SOURCE: Rabbit