a CDP-1,2-diacyl-sn-glycerol + myo-inositol = a 1,2-diacyl-sn-glycero-3-phospho-(1D-myo-inositol) + CMP + H(+) Myo-inositol-containing phospholipids are of crucial importance in the control of cellular functions. Present with 3810 molecules/cell in log phase SD medium. Belongs to the CDP-alcohol phosphatidyltransferase class-I family.