BIOCHEMISTRY II >CUSTOM<
17th Edition
ISBN: 9781337449014
Author: GARRETT
Publisher: CENGAGE C
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Textbook Question
Chapter 4, Problem 1P
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.
- Drawing Fischer Projection Formulas for Amino Acids Without consulting chapter figures, draw Fischer projection formulas for glycine, aspartate, leucine, isoleucine, methionine, and threonine.
Expert Solution & Answer
Interpretation Introduction
Interpretation:
The Fischer projection formulas for the following amino acids should be drawn.
Glycine, Aspartate, Leucine, Isoleucine, Methionine and Threonine.
Concept Introduction:
Fisher projection formula is the method used to predict a stereo formula within two dimensions without hampering the stereochemical information.
Explanation of Solution
All amino acids contain
The R group of glycine is hydrogen.
Glycine:
The R group of aspartates is a -CH2COOH.
The R group of leucine is an isobutyl group.
The R group of isoleucine is a sec-butyl group.
The R group of methionine is a thioether of methyl and ethyl groups.
The R group of threonine contains another chiral carbon attached to methyl and a hydroxyl group.
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Students have asked these similar questions
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
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(shown without charges)
OH
Chapter 4 Solutions
BIOCHEMISTRY II >CUSTOM<
Ch. 4 - Answers to all problems are at the end of this...Ch. 4 - Answers to all problems are at the end of this...Ch. 4 - Answers to all problems are at the end of this...Ch. 4 - Answers to all problems are at the end of this...Ch. 4 - Answers to all problems are at the end of this...Ch. 4 - Answers to all problems are at the end of this...Ch. 4 - Answers to all problems are at the end of this...Ch. 4 - Answers to all problems are at the end of this...Ch. 4 - Answers to all problems are at the end of this...Ch. 4 - Answers to all problems are at the end of this...
Ch. 4 - Prob. 11PCh. 4 - Answers to all problems are at the end of this...Ch. 4 - Answers to all problems are at the end of this...Ch. 4 - Answers to all problems are at the end of this...Ch. 4 - Answers to all problems are at the end of this...Ch. 4 - Answers to all problems are at the end of this...Ch. 4 - Answers to all problems are at the end of this...Ch. 4 - Answers to all problems are at the end of this...Ch. 4 - Answers to all problems are at the end of this...Ch. 4 - Answers to all problems are at the end of this...
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