Chapter 23: Q2P (page 1069)
What are the products of the following reaction?
Chapter 23: Q2P (page 1069)
What are the products of the following reaction?
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Get started for freereduces unsaturated thioesters to saturated thioesters. The reaction is thought to take place by a mechanism that involves radicals. Propose a mechanism for this reaction.
Question: Answer the following:
a. What coenzyme transfers an acyl group from one substrate to another?
b. What is the function of FAD in the pyruvate dehydrogenase complex?
c. What is the function of NAD+ in the pyruvate dehydrogenase complex?
d. What reaction necessary for proper blood clotting is catalyzed by vitamin KH2?
e. What coenzymes are used for decarboxylation reactions?
f. What kinds of substrates do the decarboxylating coenzymes work on?
g. What coenzymes are used for carboxylation reactions?
h.What kinds of substrates do the carboxylating coenzymes work on?
Question: How do the structures of tetrahydrofolate and aminopterin differ?
Question:A fatty acid (a long straight-chain carboxylic acid with an even number of carbons) is metabolized to acetyl- CoA, which can then enter the citric acid cycle to be further metabolized (Section 24.9). A fatty acid with an odd number of carbons is metabolized to acetyl-CoA and one equivalent of propionyl-CoA. Propionyl-CoA cannot enter the citric acid cycle. Two coenzyme-requiring enzymes are needed to convert it to succinyl-CoA, a compound that can enter the citric acid cycle. Write the two enzyme-catalyzed reactions and include the names
of the required coenzymes.
\(\alpha \)-Keto acids other than \(\alpha \) -ketoglutarate can accept the amino group from pyridoxamine in enzyme catalyzed transamination reactions. What amino acids are formed when the following a-keto acids accept the amino group?
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