1.1.1.286 (1R,2S)-1-hydroxybutane-1,2,4-tricarboxylate + NAD+ = 2-oxoadipate + CO2 + NADH + H+ - 1.1.1.286 (1R,2S)-1-hydroxybutane-1,2,4-tricarboxylate + NAD+ = 2-oxoadipate + CO2 + NADH + H+ chemical mechanism on the basis of the pH dependence of kinetic parameters, dissociation constants for competitive inhibitors, and multiple-substrate deuterium/13C isotope effects suggesting a stepwise mechanism with hydride transfer preceding decarboxylation, the decarboxylation step contributes only slightly to rate limitation, overview 1.1.1.286 isocitrate + NAD+ = 2-oxoglutarate + CO2 + NADH + H+ - 1.1.1.286 isocitrate + NAD+ = 2-oxoglutarate + CO2 + NADH + H+ chemical mechanism on the basis of the pH dependence of kinetic parameters, dissociation constants for competitive inhibitors, and multiple-substrate deuterium/13C isotope effects suggesting a stepwise mechanism with hydride transfer preceding decarboxylation, the decarboxylation step contributes only slightly to rate limitation, overview