“…Purified BCKDH-BDK complex was prepared from rat livers as described previously [26,27]; the specific BCKDC activity was 6.62 units/mg protein. The kinase reaction mixture contained 2 units of BCKDC per ml in 20 mmol/L Hepes-NaOH (pH 7.5), 1.5 mmol/L MgCl 2 , 2 mmol/L dithiothreitol, 1% Tween 20, 50 mmol/L K 2 HPO 4 , 0.5 mmol/L ATP, and various concentrations of MCFAs.…”