1.1.1.41 ADP - 286775, 760834, 761502, 762451 1.1.1.41 ADP activates. Michaelis-Menten constant for DL-isocitrate is lowered 3.5-fold in the wild-type IDH. The substitution of asparagine for aspartate in alpha-mutant enzyme D181N, beta-subunit mutant enzyme D192N, and gamma-subunit mutant enzyme D190N abolishes this allosteric effect of ADP on Km 685154 1.1.1.41 ADP allosteric activation by ADP involving residue betaY126. In the presence of 1 mM ADP, the Km,isocitrate is reduced almost equally in the wild-type, 3.6fold, and the alphaY126E mutant, 4.3fold 712440 1.1.1.41 ADP allosteric regulation, determination of mol ADP bound to an enzyme tetramer of wild-type and mutant enzymes at different starting concentrations, overview 656189 1.1.1.41 ADP the alpha2betagamma heterotetramer and alphagamma heterodimer can be allosterically activated by ADP 762437 1.1.1.41 AMP - 286749, 286772, 654783 1.1.1.41 AMP activates ICDH-1 286776 1.1.1.41 AMP activation of the enzyme and reduction of enzyme inhibition by mitochondrial mRNA, highly enhanced by presence of isocitrate, complex formation, overview 654652 1.1.1.41 AMP allosteric activation 656052 1.1.1.41 AMP allosteric activation, binds to subunit IDH1 721433 1.1.1.41 AMP allosteric activation, isocitrate binding is essential for binding of AMP to IDH1 subunits 721650 1.1.1.41 AMP allosteric activator, binding site at subunit IDH1 656118 1.1.1.41 AMP four AMP binding sites located on subunit IDH2 721650 1.1.1.41 ATP the enzyme can be activated by low concentrations of ATP. At high concentrations ATP is competitive with NAD+ for binding to the catalytic site 762407 1.1.1.41 citrate - 760834, 761502, 762407, 762451 1.1.1.41 citrate 106.29% activity at 1 mM 761311 1.1.1.41 citrate 110% activity at 2 mM 760649 1.1.1.41 citrate the alpha2betagamma heterotetramer and alphagamma heterodimer can be allosterically activated by citrate 762437 1.1.1.41 DTT - 721650 1.1.1.41 DTT decreases disulfide content of the enzyme, kinetics of enzyme mutants in presence or absence of DTT, overview 721650 1.1.1.41 additional information enzyme is not affected by gamma-aminobutyric acid 654914 1.1.1.41 additional information the enzyme is not affected by NADP+, HCO3-, and 2-oxoglutarate 654843 1.1.1.41 NAD+ - 667647