Use the pka values, calculate the isoelectric point (pl) of the following amino acids. a) Leucine b) Arginine c) Aspartic acid d) Glutamic acid
Use the pka values, calculate the isoelectric point (pl) of the following amino acids. a) Leucine b) Arginine c) Aspartic acid d) Glutamic acid
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Use the pka values, calculate the isoelectric point (pl) of the following amino acids.
a) Leucine
b) Arginine
c) Aspartic acid
d) Glutamic acid
Amino Acid
Alanine
Arginine
Asparagine
Aspartic acid
Cysteine
Glutamic acid
Glutamine
Glycine
Histidine
Isoleucine
Leucine
Lysine
Methionine
Phenylalanine
Proline
Serine
Threonine
Tryptophan
Tyrosine
Valine
pk, of
a-COOH
2.35
2.01
2.02
2.10
2.05
2.10
2.17
2.35
1.77
2.32
2.33
2.18
2.28
2.58
2.00
2.21
2.09
2.38
2.20
2.29
pk of
a-NH,*
9.87
9.04
8.80
9.82
10.25
9.47
9.13
9.78
9.18
9.76
9.74
8.95
9.21
9.24
10.60
9.15
9.10
9.39
9.11
9.72
pk of
Side Chain
12.48
-
3.86
8.00
4.07
6.10
-
10.53
II
10.07
-
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