approximately 75 % of the supernatant protein kinase c activity could be translocated to the particulate fraction by prior treatment ( 30-60 min ) of the cultures with 100 nm 12-o-tetradecanoyl-phorbol 13-acetate ( tpa ) , but not with 4 alpha-phorbol , an inactive phorbol ester .
C0039654
12-o-tetradecanoyl-phorbol 13-acetate
C0031586
phorbol ester