PtdIns-(5)-P1 (1,2-dihexanoyl) (sodium salt)

The phosphatidylinositol (PtdIns) phosphates represent a small percentage of total membrane phospholipids. However, they play a critical role in the generation and transmission of cellular signals. PtdIns-(5)-P1 (1,2-dihexanoyl) is a synthetic analog of natural phosphatidylinositol (PtdIns) containing C6:0 fatty acids at the sn-1 and sn-2 positions. The compound features the same inositol and diacylglycerol (DAG) stereochemistry as the natural compound. PtdIns-(5)-P1 can be phosphorylated to di- (PtdIns-P2, PIP2) and triphosphates (PtdIns-P3, PIP3) by phosphoinositol (PI)-specific kinases. Hydrolysis of PtdIns-(4,5)-P2 by PI-specific phospholipase C generates inositol triphosphate (IP3) and DAG which are key second messengers in an intricate biochemical signal transduction cascade.