EBK ORGANIC CHEMISTRY
8th Edition
ISBN: 8220102744127
Author: Bruice
Publisher: PEARSON
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Textbook Question
Chapter 24, Problem 52P
UDP-galactose-4-epimerase converts UDP-galactose to UDP-glucose. The reaction requires NAD+ as a coenzyme.
a. Propose a mechanism for the reaction.
b. Why is the enzyme called an epimerase?
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Q1: Draw the most stable and the least stable Newman projections about the C2-C3 bond for
each of the following isomers (A-C). Are the barriers to rotation identical for enantiomers A and
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H Br
H Br
(S) CH3
(R) CH3
H3C (S)
H3C
H Br
Br
H
A
C
enantiomers
H Br
H Br
(R) CH3
H3C (R)
(S) CH3
H3C
H Br
Br H
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D
identical
2. Histamine (below structure) is a signal molecule involved in immune response and is
a neurotransmitter. Histamine features imidazole ring which is an aromatic heterocycle.
Please answer the following questions regarding Histamine.
b
a
HN
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a. Determine hybridization of each N atom (s, p, sp, sp², sp³, etc.) in histamine
N-a hybridization:
N-b hybridization:
N-c hybridization:
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N-c hybridization:
Chapter 24 Solutions
EBK ORGANIC CHEMISTRY
Ch. 24.3 - Prob. 2PCh. 24.5 - Prob. 3PCh. 24.5 - Prob. 4PCh. 24.5 - Why does the OH group add to the -carbon rather...Ch. 24.5 - Prob. 6PCh. 24.5 - How many molecules of NADH are formed from the...Ch. 24.6 - Prob. 8PCh. 24.6 - The oxidation of glyceraldehyde-3-phosphate to...Ch. 24.6 - Prob. 10PCh. 24.7 - Prob. 11P
Ch. 24.7 - Prob. 12PCh. 24.7 - Prob. 13PCh. 24.7 - Propose a mechanism for the reduction of...Ch. 24.8 - Prob. 15PCh. 24.9 - Acid-catalyzed dehydration reactions are normally...Ch. 24.9 - Prob. 17PCh. 24.9 - Prob. 18PCh. 24.9 - Acid-catalyzed dehydration reactions are normally...Ch. 24.9 - Prob. 20PCh. 24.9 - Prob. 21PCh. 24.10 - Prob. 22PCh. 24.12 - a. What is the name of the enzyme that converts...Ch. 24.14 - Prob. 24PCh. 24 - Prob. 25PCh. 24 - Prob. 26PCh. 24 - Prob. 27PCh. 24 - S-Adenosylmethionine (SAM) is formed from the...Ch. 24 - Prob. 29PCh. 24 - Prob. 30PCh. 24 - Prob. 31PCh. 24 - Prob. 32PCh. 24 - Prob. 33PCh. 24 - Prob. 34PCh. 24 - Prob. 35PCh. 24 - Prob. 36PCh. 24 - Prob. 37PCh. 24 - Prob. 38PCh. 24 - Prob. 39PCh. 24 - Prob. 40PCh. 24 - Prob. 41PCh. 24 - Prob. 42PCh. 24 - Prob. 43PCh. 24 - Prob. 44PCh. 24 - Prob. 45PCh. 24 - Prob. 46PCh. 24 - Prob. 47PCh. 24 - Prob. 48PCh. 24 - Prob. 49PCh. 24 - Prob. 50PCh. 24 - Prob. 51PCh. 24 - UDP-galactose-4-epimerase converts UDP-galactose...Ch. 24 - A student is trying to determine the mechanism for...Ch. 24 - What would be the results of the experiment in...
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