the phorbol ester 12-o-tetradecanoylphorbol 13-acetate ( tpa ) , which is known to activate pkc directly , the muscarinic-receptor agonist carbamoylcholine and high glucose concentration enhanced the phosphorylation of a specific 80 kda pkc substrate in the beta-cells .
C0031586
phorbol ester
C0039654
12-o-tetradecanoylphorbol