ptdins ( 3 ) p is present in normal as well as virus-infected and transformed cells at levels ranging from 0.6 to 2.6 % of the major phosphatidylinositol phosphate isomer , phosphatidylinositol 4-phosphate ( ptdins ( 4 ) p ) .
C0031621
ptdins
C0071655
phosphatidylinositol phosphate