44108a_Q3 - 1. _______________________________ 2.

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name ___________________________________ signature ___________________________________ BICH 441 Spring 2008 Quiz 3 1 (3 pts). Draw the reaction in the TCA cycle that is catalyzed by aconitase. Show the names and structures of all reactants and products. You do not need to show the mechanism. 2 (5 pts). Draw the mechanism of the reaction catalyzed by isocitrate dehydrogenase as it occurs in the TCA cycle. You can abbreviate the structures of NAD + and NADH to show only the nicotinamide ring. 3 (3 pts). In the correct order, write the names of the enzymes that catalyze the first 5 reactions of the TCA cycle.
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Unformatted text preview: 1. _______________________________ 2. _______________________________ 3. __________________________ 4. ________________________________ 5. _______________________________ 4 (4 pts). Shown below is the structure of an intermediate in the reaction catalyzed by the pyruvate dehydrogenase complex. Starting from this intermediate, show the steps in the reaction mechanism that lead to production of acetyl-CoA. You do not need to show any of the mechanism past production of acetyl-CoA. You do not need to draw the structure of CoA....
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This note was uploaded on 03/27/2010 for the course BICH 441 taught by Professor Staff during the Spring '08 term at Texas A&M.

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