the addition of the tumor promoting phorbol ester 12-o-tetradecanoyl phorbol 13-acetate to intact human red blood cells activates protein kinase c and stimulates the phosphorylation of the membrane skeletal proteins band 4.1 and band 4.9 as well as two proteins of molecular mass 115 and 110 kda .
C0031586
phorbol ester
C0039654
phorbol