jheng Posted October 3, 2007 Share Posted October 3, 2007 hello! im new with this site. I just want to ask what is other alternative way of calculating the number of ATP produced in oxidative phosphorylation in glucose molecules? Hope you can help me with this. Thanks a lot. Link to comment Share on other sites More sharing options...
immortal Posted October 5, 2007 Share Posted October 5, 2007 Well I know only one way to calculate the number of ATP's produced in oxidative phosphorylation i.e. EMP pathway- 6 ATP's 1. In Glycolysis 2 ATP molecules are used up and 4 ATP molecules are produced through substrate-level phophorylation. Total - 4-2 = 2. 2. Two NADH2 are produced and it go through electron transport chain producing 6 ATP'S. One molecule of NADH2 produces 3 atp molecules. But remember glycolysis takes place in the cytoplasm of the cell. So the two NADH2 produced have to pass through the mitochondrial membrane and this utilizes 2 atp's. One atp for one NADH2. Total = 8-2 =6. Two pyruvic acid molecules are produced. Krebs cycle- 30 ATP's 1.Pyruvic acid molecules undergo oxidative decarboxylation and produce two acetyl COA molecules, two NADH2 molecules. So 6 ATP'S 2. IN TCA cycle 6 NADH2 molecules are produced. So 6*3 = 18 atp's. 3. 2 FADH2 molecules are produced. So 2*2 = 4 atp's. One FADH2 molecule produces 2 atp's. 4. 2 atp's are produced by substrate level phosphorylation. So the total number of atp's produced is 36. This has to be there in your text book and I don't think that there is an alternate way to calculate ATP produced in oxidative phosphorylation. Link to comment Share on other sites More sharing options...
dyulie Posted January 31, 2009 Share Posted January 31, 2009 hello. can you give a sample problem on computing for the number of ATPs produced in those cycles? i need it for my exam in biochemistry. thank you Link to comment Share on other sites More sharing options...
Fortissimo Posted February 6, 2009 Share Posted February 6, 2009 Some sources however say 2.5 ATP are produced per NADH and 1.5ATP per FADH2. I dont think your last post about help with an exam will be attended to, though. Link to comment Share on other sites More sharing options...
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