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Biology, 24.07.2020 21:01 alejandrosaaved1
In the presence of saturating amounts of oxaloacetate, the activity of citrate synthase from pig heart tissue shows a sigmoid dependence on the concentration of acetyl‑CoA. When succinyl‑CoA is added, the curve shifts to the right and the sigmoid dependence is more pronounced.
Choose the statements that are reasonable explanations for the right-ward shift of the velocity curve caused by succinyl-CoA.
a. Succinyl-CoA competes with dissociation of CoA as a product of the reaction.
b. Succinyl-CoA binds covalently to the enzyme.
c. Succinyl-CoA binds at a regulatory site other than the active site.
d. Succinyl-CoA competes with acetyl-CoA for binding at the active site.
e. Succinyl-CoA competes with oxaloacetate for binding at the active site.
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