1.1.1.87 additional information - additional information Michaelis-Menten kinetics, the enzyme shows a steady-state random kinetic mechanism with a preferred order of addition of Mg2+ prior to NAD+. The same step(s) limit the reaction at limiting and saturating Mg2+ concentrations. Solvent kinetic deuterium isotope effects and viscosity effects are consistent with a rate-limiting pre-catalytic conformational change at saturating reactant concentrations 739958 1.1.1.87 additional information - additional information mutant enzymes kinetic analysis and pH-dependencies, overview 696350 1.1.1.87 additional information - additional information substitution of potassium acetate for KCl changes the kinetic mechanism of HIcDH from a steady state random to a fully ordered mechanism with the binding of Mg-HIc followed by K+ and NAD+, increase in the affinity of enzyme for Mg-HIc as a result of elimination of the inhibitory effect of Cl-, kinetic analysis, overview 696220 1.1.1.87 0.0042 - homoisocitrate oxidate decarboxylation of homoisocitrate 685232 1.1.1.87 0.0073 - homoisocitrate wild type enzyme, with NAD+ as cosubstrate, at pH 8.0 and 60°C 760522 1.1.1.87 0.01 - homoisocitrate value below 644539 1.1.1.87 0.014 - isocitrate wild type enzyme, with NAD+ as cosubstrate, at pH 8.0 and 60°C 760522 1.1.1.87 0.0164 - isocitrate pH 7.8, 70°C, recombinant enzyme 660907 1.1.1.87 0.018 - homoisocitrate - 685539 1.1.1.87 0.018 - homoisocitrate pH 7.8, 36°C, recombinant enzyme 667934