Wheeler and Mathews (J. Biol. Chem. 287:31218–31222 (2012)) reportedthe NAD+ and NADH concentrations in yeast mitochondria as 20 mM and0.3 mM, respectively. Consider the malate dehydrogenase reaction, which is part of the citric acid cycle:malate + NAD+ → oxaloacetate + NADH + H+ ΔG∘' = +29.7 kJ/molIf malate concentration in yeast mitochondria is 0.4 mM, what is the maximum concentration of oxaloacetate needed to make the reaction exergonic at pH 7.0 and 37°C?
Wheeler and Mathews (J. Biol. Chem. 287:31218–31222 (2012)) reportedthe NAD+ and NADH concentrations in yeast mitochondria as 20 mM and0.3 mM, respectively. Consider the malate dehydrogenase reaction, which is part of the citric acid cycle:malate + NAD+ → oxaloacetate + NADH + H+ ΔG∘' = +29.7 kJ/molIf malate concentration in yeast mitochondria is 0.4 mM, what is the maximum concentration of oxaloacetate needed to make the reaction exergonic at pH 7.0 and 37°C?
Chemistry: Principles and Reactions
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Wheeler and Mathews (J. Biol. Chem. 287:31218–31222 (2012)) reported
the NAD+ and NADH concentrations in yeast mitochondria as 20 mM and
0.3 mM, respectively. Consider the malate dehydrogenase reaction, which is part of the citric acid cycle:
malate + NAD+ → oxaloacetate + NADH + H+ ΔG∘' = +29.7 kJ/mol
If malate concentration in yeast mitochondria is 0.4 mM, what is the maximum concentration of oxaloacetate needed to make the reaction exergonic at pH 7.0 and 37°C?
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