8th Edition

ISBN: 9780134042282

Author: Paula Yurkanis Bruice

Publisher: PEARSON

Concept explainers

A class of organic compounds needed in the human body for normal activities is known as vitamins. They are characterized into two parts depending upon their solubility in water. They can act as coenzymes, cofactors, or prosthetic groups for enzymes.

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Textbook Question

Chapter 23.3, Problem 9P

Acetolactate synthase is another TPP-requiring enzyme. It transfers the acyl group to another molecule of pyruvate, forming acetolactate. This is the first step in the biosynthesis of the amino acids valine and leucine. Propose a mechanism for this reaction.

Chapter 23.3, Problem 9P, Acetolactate synthase is another TPP-requiring enzyme. It transfers the acyl group to another

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Chapter 23.3, Problem 8P

Chapter 23.3, Problem 10P

Chapter 23 Solutions

Organic Chemistry (8th Edition)

Ch. 23.1 - Prob. 2P Ch. 23.1 - Prob. 3P Ch. 23.2 - How many conjugated double bonds are there in a....Ch. 23.2 - Instead of adding to the 4a position and...Ch. 23.2 - Prob. 7P Ch. 23.3 - Prob. 8P Ch. 23.3 - Acetolactate synthase is another TPP-requiring...Ch. 23.3 - Acetolactate synthase transfers the acyl group of...Ch. 23.3 - Prob. 12P Ch. 23.5 - Which compound is more easily decarboxylated?

Ch. 23.5 - Prob. 14P Ch. 23.5 - Explain why the ability of PLP to catalyze an...Ch. 23.5 - Explain why the ability of PLP to catalyze an...Ch. 23.5 - The enzyme that catalyzes the C C bond cleavage...Ch. 23.5 - Propose a mechanism for the ,-elimination reaction...Ch. 23.6 - Ethanolamine ammonia lyase, a coenzyme...Ch. 23.6 - Prob. 20P Ch. 23.7 - How do the structure of tetrahydrofolate and...Ch. 23.7 - What is the source of the methyl group in...Ch. 23.8 - Thiols such as ethanethiol and propanethiol can be...Ch. 23 - How does the metal ion in carboxypeptidase A...Ch. 23 - Prob. 24P Ch. 23 - Prob. 25P Ch. 23 - For each of the following reactions, name both the...Ch. 23 - Prob. 27P Ch. 23 - When transaminated, the three branched-chain amino...Ch. 23 - What acyl groups have we seen transferred by...Ch. 23 - Propose a mechanism for the following reaction:Ch. 23 - Draw the products of the following reaction, where...Ch. 23 - When UMP is dissolved in T2O, exchange of T for H...Ch. 23 - Dehydratase is a PLP-requiring enzyme that...Ch. 23 - In addition to the reaction mentioned in Section...Ch. 23 - PLP can catalyze both ,-elimination reactions...Ch. 23 - The glycine cleavage system is a group of four...Ch. 23 - Prob. 37P Ch. 23 - FADH2 reduces , -unsaturated thioesters to...

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