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Unformatted text preview: Fats can be synthesized, degraded, and stored, and these processes are coordinately controlled in organs and tissues by circulating hormones. Glucagon, epinephrine, and norepinephrine, which are released when energy is needed, increase cAMP levels, which triggers phosphorylation events that control the activity of enzymes such as hormone-sensitive lipase. Insulin has an opposite effect, and the ratios of the various hormones are important in determining the rate and direction of lipid metabolism. Glucose levels, phosphorylation of enzymes, allosteric activation, ATP and ADP concentrations, and other factors influence short- and long-term metabolic regulation. 5. What enzyme(s) convert(s) deoxynucleoside diphosphates to the corresponding triphosphates? Answer: The only enzyme is nucleoside diphosphate kinase. This enzyme has no preference for ribose over deoxyribose sugars, or for the specific base of the substrate....
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- Fall '11
- Amino Acids, Adenosine triphosphate, following amino acids, nucleoside monophosphate kinase