The acetate from Acetyle Coenzyme AQ joins with a 4-carbon compound, oxaloacetate, to form 6-carbon compound citric acid. Coenzyme A is released and becomes available to accept more acetate.
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Card 9
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Citrate is decarboxylated (one molecule of carbon dioxide is removed) and dehydrogenated (a pair of hydrogen atoms is removed) to form a 5-carbon compound. The pair of hydrogen atoms is accepted by a molecule of NAD, which becomes reduced.
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Card 10
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The 5-Carbon compound is decarboxylated and dehydrogenated to form a 4-carbon comound and another molecule of reduced NAD.
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Card 11
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The 4-carbon compound is canged into another 4-carbon compound. During this reaction a molecule of ADP is phosphorylated to produce a molecule of ATP. This is substrate-level phosphorylation.
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Card 12
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The second 4-carbon compound is changed into another 4-carbon compound. A pair of hydrogen atoms is removed and accepted by the coenzyme FAD, which is reduced.
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Card 13
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The third 4-carbon compound is further dehydrogenated and regenerates oxaloacetate. Another molecule of NAD is reduced.
