BCH 361 Lecture 7: TCA Cycle
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13 Feb 2017
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Hub of metabolism - cycle generates intermediates to be used in biosynthesis reactions. Glycolysis of 1 glucose generates 2 atp, as well as 4 electrons (on 2 hydride molecules) collected by 2 nad+ --> 2 nadh. Pyruvate moves into mitochondria to undergo decarboxylation to form acetyl coa. Coa will then undergo a series of oxidation rxns collectively called the tca cycle. This process releases a co2 + 2 e- (collected by a nad+ -> nadh). Each tca cycle, for 1 pyruvate, produces 2 co2, 1 gtp and 8 e- are collected, 6 of which are collected by 3 nad+, 2 of which are picked up by fad. Provide a means by which any fuel molecule (contains c + can be oxidized to obtain e -) that contains an acetyl group can be oxidized to form atp molecules. Provide the building blocks needed to form biological molecules such as nitrogenous bases, aa, glucose, and poryphorin molecules.
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