title: 1-(5-Isoquinolinesulfonyl)-2-methylpiperazine (H-7) is a selective inhibitor of protein kinase C in rabbit platelets.
abstract: Effects of 1-(5-isoquinolinesulfonyl)-2-methylpeperazine (H-7), a potent inhibitor of protein kinase C in vitro (1), were investigated with regard to stimulus-induced protein phosphorylation of rabbit platelets. While H-7 inhibited the protein kinase C-mediated phosphorylation in 12-0-tetradecanoylphorbol-13-acetate (TPA)-stimulated platelets, this compound did not block the Ca2+-calmodulin-dependent phosphorylation in Ca2+ ionophore A23187-stimulated cells. This selective inhibitor of protein kinase C, in intact cells, will facilitate studies on the biological functions of protein kinase C.
mesh_terms: D019307:1-(5-Isoquinolinesulfonyl)-2-Methylpiperazine; D000818:Animals; D001792:Blood Platelets / Q000187:drug effects / Q000201:enzymology*; D001798:Blood Proteins / Q000378:metabolism; D000001:Calcimycin / Q000494:pharmacology; D002118:Calcium / Q000378:metabolism; D002147:Calmodulin / Q000378:metabolism; D007546:Isoquinolines / Q000494:pharmacology*; D010766:Phosphorylation; D010879:Piperazines / Q000494:pharmacology*; D011493:Protein Kinase C; D047428:Protein Kinase Inhibitors; D011817:Rabbits; D013755:Tetradecanoylphorbol Acetate / Q000494:pharmacology
chemical_list: D001798:Blood Proteins; D002147:Calmodulin; D007546:Isoquinolines; D010879:Piperazines; D047428:Protein Kinase Inhibitors; D000001:Calcimycin; D019307:1-(5-Isoquinolinesulfonyl)-2-Methylpiperazine; D011493:Protein Kinase C; D013755:Tetradecanoylphorbol Acetate; D002118:Calcium