Simvastatin (MK 733) is an HMG-CoA reductase inhibitor (Ki=0.2 nM) with oral activity. Simvastatin has hypolipidemic activity, inhibits hepatic production of cholesterol, and is also used for the prevention of cardiovascular disease.

A549 cells:16.3 μM, L6 cells:229 nM, Hs 68 cells:26.4 μM, MEF cells:36.7 μM, HMG-CoA reductase:0.1-0.2 nM (Ki), Hepatocyte cells:1.3 nM, HEK293 cells:11 μM

For assessment of Akt protein kinase activity in vitro, substrate (2 μg histone H2B or 25 μg eNOS peptide) is incubated with Akt immunoprecipitated from cell lysate using goat polyclonal anti-Akt1 antibody. Kinase reactions are initiated following the addition of reaction components to a final concentration of ATP (50 μM) containing 10 μCi of 32P-γATP, dithiotreitol (1 mM), HEPES buffer (20 mM, pH 7.4), MnCl2 (10 mM), MgCl2 (10 mM). After incubation for 30 min at 30°C, phosphorylated histone H2B is visualized after SDS-PAGE (15%) and autoradiography. To estimate the extent of 32P incorporation into eNOS peptides, each reaction mixture is measured by spotting onto phosphocellulose disc filter and the amount of phosphate incorporated is measured by Cerenkov counting. The wild-type peptide sequence is 1174-RIRTQSFSLQERHLRGAVPWA-1194, and the mutant eNOS peptide is identical except that serine 1179 is substituted by alanine.