ORGANIC CHEMISTRY(LL)-W/SG.+SOLN+ACCESS
8th Edition
ISBN: 9780134649818
Author: Bruice
Publisher: PEARSON
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Textbook Question
Chapter 23.7, Problem 22P
What is the source of the methyl group in thymidine?
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Classify each molecule as a purine or a pyrimidine:
How many equivalence points will dipeptide alanylhistidine have?
Define the following terms: a. purine b. pyrimidine c. nucleoside d. lactam e. lactim
Chapter 23 Solutions
ORGANIC CHEMISTRY(LL)-W/SG.+SOLN+ACCESS
Ch. 23.1 - Prob. 2PCh. 23.1 - Prob. 3PCh. 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. 7PCh. 23.3 - Prob. 8PCh. 23.3 - Acetolactate synthase is another TPP-requiring...Ch. 23.3 - Acetolactate synthase transfers the acyl group of...Ch. 23.3 - Prob. 12PCh. 23.5 - Which compound is more easily decarboxylated?
Ch. 23.5 - Prob. 14PCh. 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. 20PCh. 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. 24PCh. 23 - Prob. 25PCh. 23 - For each of the following reactions, name both the...Ch. 23 - Prob. 27PCh. 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. 37PCh. 23 - FADH2 reduces , -unsaturated thioesters to...
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- With the help of Figure 22-2, identify each of the following nitrogen-containing bases as a purine derivative or a pyrimidine derivative. a. Uracil b. Guaninearrow_forward22-93 What charges are on aspartic acid at pH 2.0?arrow_forward22-17 What are the similarities and differences in the structures of alanine and phenylalanine?arrow_forward
- 22-43 (a) Draw the structural formula of the tripeptide Met—Ser—Cys. (b) Draw the different ionic structures of this tripeptide at pH 2.0, 7.0, and 10.0.arrow_forward22-9 What is the difference in structure between tyrosine and phenylalanine?arrow_forward22-42 (a) How many atoms of the peptide bond lie in the same plane? (b) Which atoms are they?arrow_forward
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