both alpha 1-adrenergic agonists ( e.g . norepinephrine , ne* ) and tumor-promoting phorbol esters ( e.g . phorbol myristate acetate , pma ) are known to activate protein kinase c ( pkc ) ( abdel-latif , 1986 , niedel and blackshear , 1986 ) .
C0031586
phorbol esters
C0039654
pma