What are the products of pyruvate oxidation?

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What are the products of pyruvate oxidation?

Pyruvate oxidation is the step that connects glycolysis to the citric acid cycle. In the mitochondria, the pyruvate dehydrogenase complex removes a carbon from pyruvate as CO2, transfers the remaining two-carbon unit to coenzyme A to form acetyl-CoA, and reduces NAD+ to NADH. This combo—acetyl-CoA for the TCA cycle, CO2 as a waste product, and NADH to fuel the electron transport chain—captures why these are the products. Lactate production would occur under anaerobic conditions via lactate dehydrogenase, not during this oxidative step. Pyruvate is the substrate for oxidation, not a product, and water and ATP are not direct products of pyruvate oxidation (ATP is generated later through oxidative phosphorylation).

Pyruvate oxidation is the step that connects glycolysis to the citric acid cycle. In the mitochondria, the pyruvate dehydrogenase complex removes a carbon from pyruvate as CO2, transfers the remaining two-carbon unit to coenzyme A to form acetyl-CoA, and reduces NAD+ to NADH. This combo—acetyl-CoA for the TCA cycle, CO2 as a waste product, and NADH to fuel the electron transport chain—captures why these are the products.

Lactate production would occur under anaerobic conditions via lactate dehydrogenase, not during this oxidative step. Pyruvate is the substrate for oxidation, not a product, and water and ATP are not direct products of pyruvate oxidation (ATP is generated later through oxidative phosphorylation).

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