Phospholipid associated with mechanism of hormone action is

Phosphatidylinositol Is a Precursor of Second Messengers The inositol is present in phosphatidylinositol as the stereoisomer, myoinositol. Phosphatidylinositol 4,5 bisphosphate is an impoant constituent of cell membrane phospholipids? upon stimulation by a suitable hormone agonist, it is cleaved into diacylglycerol and inositol trisphosphate, both of which act as internal signals or second messengers.