Study Guide with Student Solutions Manual and Problems Book for Garrett/Grisham's Biochemistry, 6th
6th Edition
ISBN: 9798214167343
Author: GARRETT
Publisher: Cengage Learning US
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Chapter 5, Problem 5P
Answers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book.
Solving the Sequence of an Oligopeptide From Sequence Analysis Data Amino acid analysis of an oetapepiide revealed the following composition:
2 Arg 1 Gly I Mel I Trp I Tyr 1 Phe I Lys The following facts were observed:
a. Edman degradation gave
b. CNBr treatment yielded a pentapeptide and a tripcptide containing phenylalanine.
c. Chymotrypsin treatment yielded a tetrapeptide containing a Oterminal indole amino acid and two dipeptides.
d. Trypsin treatment yielded a tetrapeptide, a dipeptide, and free Lys and Phe.
e. Clostripain yielded a pentapeptide. a di peptide. and Tree Phe.
What is the amino acid sequence of this octapeptide?
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12. When glutamic acid is heated to 180°C., it loses a molecule of water to form a
lactam. The bond that creates the lactam is an amide bond that forms between the
amino nitrogen and the carbon of the side chain -COOH group. What is the most
reasonable structure for this lactam? (NOTE: The structure of glutamic acid is shown
in Question 1.)
COOH
COOH
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C
D
COOH
B
COOH
E
COOH
10. Which one of the
following compounds is
the major organic product
of the series of reactions
shown here?
Ph
A
OH
Ph
B
CO₂Et
Br
-H
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CO₂Et
1. NaOEt
1. NaOH, H₂O
2. H3O+
2. PhCH2CH2Br
3. heat
NH2
Ph
OH
NH2
0
OH
Ph
OH
NH2
Ph
D
NH2
E
OH
1. What is the isoelectric point of glutamic acid?
(Glutamic acid has pKa1 2.10, pKa2 4.07, pKaз 9.47)
A) pH 2.1
D) pH 6.8
B) pH 3.1
C) pH 4.1
E) pH 9.5
HO
NH2
Glutamic acid
(shown without charges)
OH
Chapter 5 Solutions
Study Guide with Student Solutions Manual and Problems Book for Garrett/Grisham's Biochemistry, 6th
Ch. 5 - Answers to all problems are at the end of this...Ch. 5 - Answers to all problems are at the end of this...Ch. 5 - Answers to all problems are at the end of this...Ch. 5 - Answers to all problems are at the end of this...Ch. 5 - Answers to all problems are at the end of this...Ch. 5 - Answers to all problems are at the end of this...Ch. 5 - Answers to all problems are at the end of this...Ch. 5 - Answers to all problems are at the end of this...Ch. 5 - Answers to all problems are at the end of this...Ch. 5 - Answers to all problems are at the end of this...
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