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16 - http/www4.ncsu.edu/~knopp/BCH451/e04b4.htm BCH 451...

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BCH 451 Summer 2004 Exam #4 NAME 1. Draw the predominate structures of the following molecules at the pH indicated. Be sure to include all carbon and hydrogen atoms! a. (1) cAMP @ pH = 7.5 b. (1) L-histidine @ pH = 5.5 2. (4) For step 6 of glycolysis, 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. Enzyme name: Enzyme class: Reaction: 3. (4) For step 4 of the TCA 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.
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