when a homogenate of rat cerebral cortex was used as the source of protein kinase , phosphorylation of adap peptide ( 645-661 ) was stimulated by calcium/phosphatidylserine/diolein to a level 4.6-fold above the basal level of phosphorylation , consistent with a prominent stimulation by protein kinase c .
C0033640
protein kinase
C0031715
phosphorylation