these findings suggest that : ( a ) multiple protein kinase systems , including camp-dependent , protein kinase c-dependent , and ca2+/calmodulin-dependent kinases , are capable of regulating beta-adrenergic receptor function via phosphorylation reactions and that ( b ) camp may not be the sole mediator of isoproterenol-induced phosphorylation and desensitization in these cells .
C0033640
protein
C0031715
phosphorylation