4 - http/www4.ncsu.edu/~knopp/BCH451/e98c4.htm BCH 451 Fall...

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BCH 451 Fall 1998 Exam #4 Go to each question within the exam an circle or write in the subquestion (choice) that your are to answer based on the column that you circled. If you answer the wrong subquestion, you will not get any credit for that question. Please ask for help, if you are unsure about this. (4) For the step given by the number in row labeled A in the glycolytic pathway, name the enzyme, give the class of the enzyme, draw the structures of the non-cofactor substrate(s) and product(s) connected by the reaction arrow(s), show reversibility or irreversibility by the directions of the arrow(s), show co-substrates coming in and out of the reaction as appropriate with the usual abbreviations, and list all other cofactors under the reaction arrow. 1. Enzyme name: Enzyme class: Reaction: (4) For the step given by the number in row labeled B in the Krebs cycle, name the enzyme, give the class of the enzyme, draw the structures of the non-cofactor substrate(s) and product(s) connected by the reaction arrow(s), show reversibility or irreversibility by the directions of the arrow(s), show co-substrates coming in and out of the reaction as appropriate with the usual abbreviations, and list all other cofactors under the reaction arrow. 1. Enzyme name: Enzyme class: Reaction: For the letter in row C , fill in the following blanks for that complex in oxidative phosphorylation, using full names and not abbreviations: 1. (0.3) full and complete name: (0.2) number of protons pumped out of complex: (0.4) substrates [no structures]: (0.4) products [no structures]: (0.6) cofactors/prosthetic group(s): (3.6) Give the balanced reaction for the complete oxidation of acetyl CoA in the absence of oxygen: 1.
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