Inactivation of yeast alpha-isopropylmalate synthase by CoA. Antagonism between CoA and adenylates and the mechanism of CoA inactivation.


Yeast alpha-isopropylmalate synthase (EC is inactivated by micromolar concentrations of CoA in the presence of Zn2+. We report here that rapid reactivation of inactivated enzyme (full recovery in less than 10 min) occurred in the presence of millimolar concentrations of ATP or ADP, using permeabilized cells. With purified, CoA-inactivated enzyme… (More)


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