cyclic adenosine 3':5'-monophosphate ( cyclic amp ) -dependent phosphorylation of endogenous plasma membrane proteins catalyzed by an endogenous plasma membrane protein kinase was assayed in purified plasma membrane preparations derived from nontransformed , methylcholanthrene-transformed , and simian virus 40 ( sv40 ) -transformed balb/3t3 cells .
C0031715
phosphorylation
C0031727
kinase