Describe the regulation of glycogen phosphorylase. What is the function of unsaturated hydrocarbon tails of membrane lipids? How do the structures of the nitrogenous bases affect their function? What is a functional group? Give examples. What are the functional groups present in the vitamin C molecu...
In the first step of glycogenolysis, the enzyme glycogen phosphorylase acts on glycogen to produce glucose-1-phosphate. What must happen to this product before it can enter the glycolysis pathway? a. It must transfer its phosphate group to ADP. b. It m ...
PKA phosphorylates numerous metabolic enzymes, including glycogen synthase and phosphorylase kinase, which inhibit glycogen synthesis and promote glycogen breakdown, respectively, and acetyl CoA carboxylase, which inhibits lipid synthesis. PKA also regulates other signaling pathways. For example, it ...
Separation from cyclic-AMP-dependent protein kinase and phosphorylase kinase. Eur J Biochem 1980; 107:519–527 Article PubMed CAS Google Scholar Ali A, Hoeflich KP, Woodgett JR. Glycogen synthase kinase-3: properties, functions, and regulation. Chem Rev 2001; 101:2527–2540 Article PubMed ...
Explain the following enzyme and what type of reaction they catalyze: (a) Glucose-6-phosphatase (b) Glycogen phosphorylase Which metabolic process oxidizes NADH and FADH2? A. Electron transport chain B. Oxidative phosphorylation C. Citric acid cycle D. Hydrolysis The one reaction that is found i...
A strain of mice has been developed that lack the enzyme phosphorylase kinase. Despitethis, after strenuous exercise, glycogen is still broken down. Explain how this is possible. What is the most efficient enzyme known that can catalyze hydrogen?
Which of the following statements apply to glycogen phosphorylase? A. ADP is one of the substrates of this enzyme. B. Its activity is increased by high levels of glucose 6-phosphate. C. The inactive form is phosphorylated. D. The liver enzyme is activ Which one of the statements below is...
Explain the following enzyme and what type of reaction they catalyze: (a) Glucose-6-phosphatase (b) Glycogen phosphorylase Enzymes are extremely specific for substrates. Explain why this is so in terms of events at the active site. What levels of protein structure are involved? Draw s...
The specificity of an enzyme refers to the types of chemical bonds with which the enzyme reacts. Each enzyme has a particular range of what it can and cannot react with as well as a range of conditions under which it will either be active or inactive. Most enzymes have a very specific ...
Explain the following enzyme and what type of reaction they catalyze: (a) Glucose-6-phosphatase (b) Glycogen phosphorylaseWhat is the general two-step mechanism by which most enzymes work?Discuss the normal role of the enzyme and how reduced enzyme activity impacts fatty...