Tricarboxylic acid cycle: Quick Facts

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Facts

Also Known As	citric acid cycle • TCA cycle • Krebs cycle

Photos

Diagram of the eight-step tricarboxylic acid cycle showing the sequence of metabolites from acetyl CoA through citrate, isocitrate, alpha-ketoglutarate, succinyl CoA, succinate, fumarate, malate, and oxaloacetate, with arrows indicating the flow of reactions and production of ATP, NADH, FADH2, and CO2.

A biochemical flowchart shows the metabolic pathways for carbohydrate utilization, including glycolysis, the pentose phosphate pathway, and the tricarboxylic acid (TCA) cycle. The diagram traces the conversion of glucose, fructose, and glycerol through various intermediates, leading to energy production, carbon dioxide release, and biosynthesis of amino acids and porphyrins. Key steps and branches are labeled, with colored boxes highlighting biosynthetic outputs.

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Topics

reductive tricarboxylic acid cycle cellular respiration Cytochrome glycolysis

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Key People

Sir Hans Adolf Krebs

Sir Hans Adolf Krebs

German-British biochemist