Suggest a role for coenzymes based on reaction mechanisms.
Answer to relevant QuestionsAn enzyme uses NAD+ as a coenzyme. Using Figure 7.19, predict whether a radiolabeled H:– ion would tend to appear preferentially on one side of the nicotinamide ring as opposed to the other side. What structural features do a triacylglycerol and a phosphatidyl ethanolamine have in common? How do the structures of these two types of lipids differ? What structural features do a sphingomyelin and a phosphatidylcholine have in common? How do the structures of these two types of lipids differ? Explain, and draw a diagram to show, how acetylation or phosphorylation could change the binding affinity between DNA and histones. Would you expect tRNA or mRNA to be more extensively hydrogen bonded? Why?
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