Organic Chemistry; Modified MasteringChemistry with Pearson eText -- ValuePack Access Card; Study Guide and Student Solutions Manual for Organic Chemistry, Books a la Carte Edition (7th Edition)
7th Edition
ISBN: 9780134240152
Author: Paula Yurkanis Bruice
Publisher: PEARSON
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Chapter 24, Problem 30P
When transaminated, the three branched-chain amino acids (valine, leucine, and isoleucine) form compounds that have the characteristic odor of maple syrup. An enzyme known as branched-chain α-keto acid dehydrogenase converts these compounds into CoA esters. People who do not have this enzyme have the genetic disease known as maple syrup urine disease, so called because their urine smells like maple syrup.
- a. Draw the compounds that smell like maple syrup.
- b. Draw the CoA esters.
- c. Branched-chain α-keto acid dehydrogenase has live coenzymes. Identify them.
- d. Suggest a way to treat maple syrup urine disease.
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Chapter 24 Solutions
Organic Chemistry; Modified MasteringChemistry with Pearson eText -- ValuePack Access Card; Study Guide and Student Solutions Manual for Organic Chemistry, Books a la Carte Edition (7th Edition)
Ch. 24.1 - Prob. 2PCh. 24.1 - Prob. 3PCh. 24.2 - How many conjugated double bonds are there in a....Ch. 24.2 - Instead of adding to the 4a position and...Ch. 24.2 - Prob. 7PCh. 24.3 - Prob. 8PCh. 24.3 - Acetolactate synthase is another TPP-requiring...Ch. 24.3 - Acetolactate synthase transfers the acyl group of...Ch. 24.5 - Prob. 12PCh. 24.5 - The enzyme that catalyzes the C C bond cleavage...
Ch. 24.5 - Propose a mechanism for the ,-elimination reaction...Ch. 24.5 - Which compound is more easily decarboxylated?Ch. 24.5 - Explain why the ability of PLP to catalyze an...Ch. 24.5 - Explain why the ability of PLP to catalyze an...Ch. 24.6 - Ethanolamine ammonia lyase, a coenzyme...Ch. 24.6 - Prob. 19PCh. 24.7 - How do the structure of tetrahydrofolate and...Ch. 24.7 - What is the source of the methyl group in...Ch. 24.8 - Thiols such as ethanethiol and propanethiol can be...Ch. 24 - How does the metal ion in carboxypeptidase A...Ch. 24 - Prob. 23PCh. 24 - Prob. 24PCh. 24 - Prob. 25PCh. 24 - S-Adenosylmethionine (SAM) is formed from the...Ch. 24 - Prob. 27PCh. 24 - What acyl groups have we seen transferred by...Ch. 24 - Propose a mechanism for the following reaction:Ch. 24 - When transaminated, the three branched-chain amino...Ch. 24 - Draw the products of the following reaction, where...Ch. 24 - When UMP is dissolved in T2O, exchange of T for H...Ch. 24 - Dehydratase is a PLP-requiring enzyme that...Ch. 24 - In addition to the reaction mentioned in Section...Ch. 24 - PLP can catalyze both ,-elimination reactions...Ch. 24 - The glycine cleavage system is a group of four...Ch. 24 - Prob. 37PCh. 24 - FADH2 reduces , -unsaturated thioesters to...
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