The citric acid cycle | Cellular respiration (article) - Khan Academy
https://www.khanacademy.org/science/biology/cellular-respiration-and-fermentation/pyruvate-oxidation-and-the-citric-acid-cycle/a/the-citric-acid-cycle
WebStep 1. In the first step of the citric acid cycle, acetyl CoA joins with a four-carbon molecule, oxaloacetate, releasing the CoA group and forming a six-carbon molecule called citrate. Step 2. In the second step, citrate is converted into its isomer, isocitrate.
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