Metabolism
Citrate is an intermediate in the TCA (Krebs) cycle. After the pyruvate dehydrogenase complex forms acetyl-CoA, from pyruvate and five cofactors (thiamine pyrophosphate, lipoamide, FAD, NAD+, and CoA), citrate synthase catalyzes the condensation of oxaloacetate with acetyl CoA to form citrate. Citrate continues in the TCA cycle via aconitase with the eventual regeneration of oxaloacetate, which can combine with another molecule of acetyl CoA and continue cycling.
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