Protein kinases are enzymes that catalyze protein phosphorylation. Obviously, Protein kinases include many types of kinases, such as  PKC，PKA, c-Fgr and phosphorylase kinase. Thereinto, PKC, PKA and phosphorylase kinase belong to serine or threonine kinases and c-Fgr belongs to Tyr kinases. Interestingly, diacylglycerol (DG) can activate PKC and the...