Learn Glossary metabolism

Krebs cycle

Aerobic mitochondrial cycle that oxidizes acetyl-CoA to CO2 and generates NADH, FADH2, and GTP/ATP.

Also: Citric acid cycle, TCA cycle, Tricarboxylic acid cycle

Central oxidative pathway in the mitochondrial matrix. Eight enzymatic steps convert citrate back to oxaloacetate while releasing two CO2, producing 3 NADH, 1 FADH2, and 1 GTP/ATP per acetyl-CoA. Provides reducing equivalents for the electron transport chain and intermediates for biosynthesis.

How one textbook covers it

  • Advanced Nutrition and Human Metabolism, 8th ed. (Gropper)Glossary

    Central oxidative pathway in the mitochondrial matrix. Eight enzymatic steps convert citrate back to oxaloacetate while releasing two CO2, producing 3 NADH, 1 FADH2, and 1 GTP/ATP per acetyl-CoA. Provides reducing equivalents for the electron transport chain and intermediates for biosynthesis.

Related terms

Amphibolic pathway, Anaplerotic reaction, Electron transport chain, Oxidative phosphorylation