evidence that the effect on lipid was mediated by protein kinase c activation and not by a direct action of pma was provided by ( 1 ) the lack of effect of a phorbol ester that did not activate protein kinase c or of pma addition on isolated membranes from control erythrocytes , ( 2 ) the reversal of the effect in the presence of protein kinase c inhibitors ( alpha-cobrotoxin , h-7 ( 1- ( 5-isoquinolinesulfonyl ) -2-methylpiperazine ) or trifluoperazine ) .
C0031586
phorbol ester
C0039654
pma