1.1.1.39 (S)-malate above 10 mM 200 1.1.1.39 (S)-malate isozyme NAD-ME2, competitive 200 1.1.1.39 2-Ketoglutarate - 5098 1.1.1.39 5'-AMP isozyme NAD-ME2, competitive versus NAD+, mixed inhibition versus (S)-malate 236 1.1.1.39 acetyl-CoA potent inhibitor 29 1.1.1.39 acetyl-CoA enzyme activity is allosterically regulated by acetyl-CoA, almost complete inhibition at 0.05 mM 29 1.1.1.39 acetyl-CoA - 29 1.1.1.39 AMP - 30 1.1.1.39 ATP competitive with respect to (S)-malate 4 1.1.1.39 ATP - 4 1.1.1.39 ATP the enzyme is competitively inhibited by ATP up to 10fold. Addition of 1 mM or 5 mM fumarate reverses ATP-dependent inhibition of the enzyme to 55 or 70% of its maximum activity, respectively 4 1.1.1.39 bicarbonate - 1136 1.1.1.39 Bromopyruvate - 1917 1.1.1.39 Ca2+ inhibits 30% at 1 mM and 60% at 10 mM 15 1.1.1.39 citrate competitive 131 1.1.1.39 Cl- - 141 1.1.1.39 CO2 chimeric mutant NAD-ME1q, mixed inhibition versus NAD+ and (S)-malate; isozyme NAD-ME2 and chimeric mutant NAD-ME1q, mixed inhibition versus NAD+ and (S)-malate 28 1.1.1.39 CoA - 18 1.1.1.39 CuSO4 - 263 1.1.1.39 D-Tartrate - 7181 1.1.1.39 DL-isocitrate - 849 1.1.1.39 DL-lactate - 5286 1.1.1.39 EDTA - 21 1.1.1.39 EDTA complete inhibition at 0.1 mM 21 1.1.1.39 fructose 6-phosphate competitive versus (S)-malate, 70% inhibition at 2.5 mM 453 1.1.1.39 fumarate - 170 1.1.1.39 glyoxylate - 101 1.1.1.39 HCO3- - 195 1.1.1.39 HgCl2 - 110 1.1.1.39 hydroquinone - 442 1.1.1.39 KCNO - 20906 1.1.1.39 L-asparatate - 49150 1.1.1.39 L-aspartate slightly competitive to malate, only slight inhibition below pH 6.0 97 1.1.1.39 Li+ slight inhibition 152 1.1.1.39 Lu3+ strong inhibition, reversible slow-binding mechanism, reversible structural interconversion to the Mn2+-binding form, metal binding site structure 34563 1.1.1.39 malonate - 392 1.1.1.39 Mn2+ inhibits the reductive carboxylation reaction, inhibitory effect is about 20fold reduced by binding of fumarate and L-malate 11 1.1.1.39 additional information water stress reduces the enzyme activity in vivo 2 1.1.1.39 additional information product inhibition patterns of isozyme NAD-ME2, overview; product inhibition patterns of isozyme NAD-ME2, overview 2 1.1.1.39 additional information keeping plants in CO2-free air suppresses the activities of NAD-ME 2 1.1.1.39 Na+ complete inhibition at 10 mM, no effect by Na+ at 1 mM 59 1.1.1.39 NADH - 8 1.1.1.39 NADH product inhibition 8 1.1.1.39 NADH isozyme NAD-ME2, competitive versus NAD+, mixed inhibition versus (S)-malate. NADH shows competitive and mixed-type inhibition versus NAD+ and (S)-malate with chimeric mutant NAD-ME1q; NADH shows competitive and mixed-type inhibition versus NAD+ and (S)-malate with chimeric mutant NAD-ME1q 8 1.1.1.39 NEM - 89 1.1.1.39 oxalate - 185 1.1.1.39 oxalate very tight binding inhibitor of the NAD-malic enzyme 185 1.1.1.39 oxaloacetate - 57 1.1.1.39 oxaloacetate competitive versus (S)-malate, 20% inhibition at 2.5 mM 57 1.1.1.39 PCMB - 78 1.1.1.39 phosphoenolpyruvate - 51 1.1.1.39 phosphoenolpyruvate activates at low concentrations, deactivation at high concentrations 51 1.1.1.39 pyruvate - 31 1.1.1.39 pyruvate product inhibition 31 1.1.1.39 pyruvate isozyme NAD-ME2, uncompetitive versus NAD+, mixed inhibition versus (S)-malate. Pyruvate inhibition is uncompetitive with respect to NAD+ and mixed with respect to (S)-malate for the chimeric mutant NAD-ME1q; pyruvate inhibition is uncompetitive with respect to NAD+ and mixed with respect to (S)-malate for the chimeric mutant NAD-ME1q 31 1.1.1.39 Tartrate - 762 1.1.1.39 Tartrate substrate analogue, isozyme NAD-ME2, uncompetitive versus NAD+, competitive versus (S)-malate 762 1.1.1.39 Tartronate - 4283 1.1.1.39 Tartronate binding site structure at the active site, competitive 4283 1.1.1.39 Urea denaturation, in 3-5 M urea, the enzyme undergoes a reversible tetramer-dimer-monomer quaternary structural change in an acidic pH environment, which resulted in a molten globule state that is prone to aggregate, Mn2+ protects, overview 116