macintosh
Forum Elite
Topics: 38
Posts: 178
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Some one some where mentioned that TCA yields 38 molecules of ATP per glucose. I tried to calculate the enery yield myself, but can not achieve more than 32 ATPs per glucose. My calculation is as follows:
Glycolysis:
4 ATP (substrate level phosphorylation) + 2 NADH - 2 ATP
= 2 ATP + 6 ATP = 8 ATP (malate shuttle)
TCA:
2 x (3 NADH + 1 GTP + 1 FADH2)
= 2 x (9 ATP + 1 ATP + 2 ATP) = 24 ATP
TOTAL:
8 + 24 = 32 ATPs
Please correct me if I have made a mistake.
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Forum Senior
Topics: 15
Posts: 152
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Everything looks ok... I think you forgrt about pyruvate dehydrogenase. Pyruvate to acetyl-coA is considering to be the first step in TCA. This will give you 2 NADH---->
6 ATP
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