PtdIns-(3,4)-P2 (1,2-dipalmitoyl) (sodium salt)

The phosphatidylinositols (PtdIns) phosphates represent a small percentage of total membrane phospholipids. but they play a crucial role in the generation and transmission of cellular signals. PtdIns is phosphorylated to mono- (PtdIns-P; PIP), di- (PtdIns-P2; PIP2) and triphosphates (PtdIns-P3; PIP3). Hydrolysis of PIP2 by PI-specific phospholipase C generates IP3 and diacylglycerol (DAG).

References

1 Lapetina, E.G., Billah, M.M., Cuatrecasas, P. The phosphatidylinositol cycle and the regulation of arachidonic acid production. Nature 292 367-369 (1981). 2 Majerus, P.W. Inositol phosphate biochemistry. Annu Rev Biochem 61 225-250 (1992).