phosphatidylinositol 4,5-bisphosphate

(redirected from Phosphatidylinositol (4,5)-bisphosphate)
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phos·pha·ti·dyl·in·o·si·tol 4,5-·bis·phos·phate (PIP2, PtdIns(4,5)P2),

phosphatidylinositol with two additional sites of phosphorylation; an important constituent of cell membrane phospholipids as well as a precursor of the second messengers, diacylglycerol and inositol 1,4,5-trisphosphate.
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