TCA Cycle Enzymes

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9 Terms

1
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What enzyme converts pyruvate into acetyl-CoA?

Pyruvate dehydrogenase

2
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What is the enzyme that converts oxaloacetate + acetyl-CoA to citrate?

Citrate synthase

3
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What enzyme converts citrate to cis-aconitate and then to isocitrate?

Aconitase

4
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Which enzyme converts isocitrate to α-ketoglutarate and produces NADH?

Isocitrate dehydrogenase

5
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Which enzyme converts α-ketoglutarate to succinyl-CoA and produces NADH?

α-Ketoglutarate dehydrogenase

6
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Which enzyme performs substrate-level phosphorylation in the TCA cycle?

Succinyl-CoA synthetase (produces GTP)

7
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Which enzyme converts succinate to fumarate and produces FADH₂?

Succinate dehydrogenase

8
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Which enzyme hydrates fumarate to malate?

Fumarase

9
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Which enzyme converts malate to oxaloacetate and produces NADH?

Malate dehydrogenase