Essential Organic Chemistry, Global Edition
3rd Edition
ISBN: 9781292089034
Author: Paula Yurkanis Bruice
Publisher: PEARSON
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Chapter 19.13, Problem 18P
Interpretation Introduction
Interpretation:
A mechanism has to be proposed from glutamate in two steps using ATP and ammonia.
Concept introduction:
Transamination: The reaction that transfers amino group into
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The first step in the catabolism of most amino acids is the removal of the nitrogen atom by transfer to an a-keto acid, a reaction
catalyzed by an enzyme called a transaminase. The a-keto acid acceptor is often a-ketoglutarate. Modify the structures in the
product to show the products of the transamination of cysteine. Be sure to show functional groups with the charge and number of
attached hydrogen atoms appropriate for pH 7.4.
transaminase
+
O=C
H₂N-CH
+
CH₂
CH₂
CH₂
SH
Incorrect
H₂N
||
CH
|
CH₂
|
CH₂
I
||
O
||
n
|
CH₂
T
SH
If an enzyme-catalyzed reaction has a high rate at low pH and low rate at higher
pH, this implies that a group on either the enzyme or the substrate must be
for an efficient reaction.
leaving group
oxidoreductase
coenzymes
O protonated
deprotonated
The compound that consists of deoxyribose linked by an N-glycosidic bond to
N-9 of guanine is:
adenylate
deoxyguanosine
guanosine
nucleotide
guanylate
Cyclic-AMP, first isolated in 1959, is involved in many diverse biological processes as a regulator of metabolic and physiological activity. In it, a single phosphate group is esterified with both the 3' and 5' hydroxyls of adenosine. Draw a structural formula of cyclic-AMP.
Chapter 19 Solutions
Essential Organic Chemistry, Global Edition
Ch. 19.4 - Prob. 1PCh. 19.4 - How many molecules of NADH are formed from the...Ch. 19.4 - Why does the OH group add to the -carbon rather...Ch. 19.5 - Prob. 4PCh. 19.5 - Prob. 5PCh. 19.5 - The oxidation of glyceraldehyde-3-phosphate to...Ch. 19.5 - Prob. 7PCh. 19.6 - Prob. 8PCh. 19.6 - Prob. 9PCh. 19.6 - Propose a mechanism for the reduction of...
Ch. 19.7 - Prob. 11PCh. 19.8 - Acid-catalyzed dehydration reactions are normally...Ch. 19.8 - Prob. 13PCh. 19.8 - Prob. 14PCh. 19.8 - Prob. 15PCh. 19.9 - Prob. 16PCh. 19.10 - a. What is the name of the enzyme that converts...Ch. 19.13 - Prob. 18PCh. 19 - Prob. 19PCh. 19 - Prob. 20PCh. 19 - Prob. 21PCh. 19 - Prob. 22PCh. 19 - Prob. 23PCh. 19 - Prob. 24PCh. 19 - Prob. 25PCh. 19 - Prob. 26PCh. 19 - Prob. 27PCh. 19 - Prob. 28PCh. 19 - Prob. 29PCh. 19 - Prob. 30PCh. 19 - Prob. 31PCh. 19 - Prob. 32PCh. 19 - Prob. 33PCh. 19 - Prob. 34PCh. 19 - Prob. 35PCh. 19 - Prob. 36PCh. 19 - Prob. 37PCh. 19 - Prob. 38PCh. 19 - Prob. 39PCh. 19 - Prob. 40PCh. 19 - Prob. 41PCh. 19 - Prob. 42PCh. 19 - Prob. 43PCh. 19 - Prob. 44PCh. 19 - UDP-galactose-4-epimerase converts UDP-galactose...Ch. 19 - A student is trying to determine the mechanism for...Ch. 19 - What would be the results of the experiment in...
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