title: Comparison of calcium-activated, cyclic nucleotide-independent protein kinase and adenosine 3':5'-monophosphate-dependent protein kinase as regards the ability to stimulate glycogen breakdown in vitro.
abstract: A cyclic nucleotide-independent protein kinase, which was produced from its proenzyme upon limited proteolysis by a Ca2+-dependent protease (Takai, Y., Yamamoto, M., Inoue, M., Kishimoto, A., & Nishizuka , Y. (1977) Biochem. Biophys. Res. Commun. 77, 542-550), showed an ability to phosphorylate not only muscle glycogen phosphorylase kinase but also glycogen synthase, resulting in activation and inactivation of the respective enzymes, although the protein kinase was less active than adenosine 3':5'-monophosphate (cyclic AMP)-dependent protein kinase toward glycogen synthase. Available evidence indicates that this new protein kinase shows pleiotropic functions apparently similar to those described for cyclic AMP-dependent protein kinase. Nevertheless, these protein kinases were clearly distinguishable from each other in their response to cyclic nucleotides and susceptibility to protein inhibitor.
mesh_terms: D000255:Adenosine Triphosphate / Q000378:metabolism; D000818:Animals; D002118:Calcium / Q000494:pharmacology*; D000242:Cyclic AMP / Q000494:pharmacology*; D006152:Cyclic GMP / Q000494:pharmacology*; D006003:Glycogen / Q000378:metabolism*; D006006:Glycogen Synthase / Q000378:metabolism; D006657:Histones / Q000378:metabolism; D008099:Liver / Q000201:enzymology; D009132:Muscles / Q000201:enzymology; D010764:Phosphorylase Kinase / Q000378:metabolism; D047428:Protein Kinase Inhibitors; D011494:Protein Kinases / Q000378:metabolism*; D011817:Rabbits; D051381:Rats
chemical_list: D006657:Histones; D047428:Protein Kinase Inhibitors; D000255:Adenosine Triphosphate; D006003:Glycogen; D000242:Cyclic AMP; D006006:Glycogen Synthase; D011494:Protein Kinases; D010764:Phosphorylase Kinase; D006152:Cyclic GMP; D002118:Calcium