the phorbol ester 12-o-tetradecanoylphorbol 13-acetate ( tpa ) caused phosphorylation of phosphoproteins of 56-kda which co-migrated with and had identical pi values to subunits of tyrosine hydroxylase .
C0031586
phorbol ester
C0039654
12-o-tetradecanoylphorbol 13-acetate