pK, values Abbreviation/ Amino acid symbol pk, M coOH) NH,") (R group) pl pK, Glycine Gly G 75 2.34 9.60 5.97 Alanine Ala A 89 2.34 9.69 6.01 Proline Pro P 115 1.99 10.96 6.48 Valine Val V 117 2.32 9.62 5.97 Leucine Leu L 131 2.36 9.60 5.98 Isoleucine lel 131 2.36 9.68 6.02 Methionine Met M 149 2.28 9.21 5.74 Phenylalanine Phe F 165 1.83 9.13 5.48 Тугosine Tyr Y 181 2.20 9.11 10.07 5.66 Tryptophan Trp W 204 2.38 9.39 5.89 Serine Ser s 105 2.21 9.15 5.68 Threonine ThrT 119 2.11 9.62 5.87 Cysteine Cys C 121 1.96 10.28 8.18 5.07 Asparagine Asn N 132 2.02 8.80 5.41 Glutamine Gin Q 146 2.17 9.13 5.65 Lysine Lys K 146 2.18 8.95 10.53 9.74 Histidine 155 174 His H 1.82 9.17 6.00 7.59 Arginine Arg R 2.17 9.04 12.48 10.76 Aspartate Asp D 133 1.88 9.60 3.65 2.77 Glutamate Glu E 147 2.19 9.67 4.25 3.22 What is the NET CHARGE of the short peptide shown below at pH 7.0? Identify the charged groups in the peptides

Human Anatomy & Physiology (11th Edition)
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pK, values
Abbreviation/
Amino acid symbol
pK,
M FCOOH) NH,*) (R group) pl
pK,
Glycine
Gly G
75
2.34
9.60
5.97
Alanine
Ala A
89
2.34
9.69
6.01
Proline
Pro P
115
1.99
10.96
6.48
Valine
Val V
117
2.32
9.62
5.97
Leucine
Leu L
131
2.36
9.60
5.98
Isoleucine
lel
131
2.36
9.68
6.02
Methionine
Met M
149
2.28
9.21
5.74
Phenylalanine Phe F
Tyrosine
165
1.83
9.13
5.48
Tyr Y
181
2.20
9.11
10.07
5.66
Tryptophan
Trp W
204
2.38
9.39
5.89
Serine
Ser s
105
2.21
9.15
5.68
Threonine
ThrT
119
2.11
9.62
5.87
Cysteine
Cys C
121
1.96
10.28
8.18
5.07
Asparagine
Asn N
132
2.02
8.80
5.41
Glutamine
Gin Q
146
2.17
9.13
5.65
Lysine
Lys K
146
2.18
8.95
10.53
9.74
Histidine
His H
155
1.82
9.17
6.00
7.59
Arginine
Arg R
174
2.17
9.04
12.48
10.76
Aspartate
Asp D
133
1.88
9.60
3.65
2.77
Glutamate
Glu E
147
2.19
9.67
4.25
3.22
What is the NET CHARGE of the short peptide shown below at pH 7.0? Identify the charged groups in
the peptides.
N' - Arg - Asn - Tyr – Gly - Glu – His - Phe - C'
Transcribed Image Text:Time left 0:19:0 pK, values Abbreviation/ Amino acid symbol pK, M FCOOH) NH,*) (R group) pl pK, Glycine Gly G 75 2.34 9.60 5.97 Alanine Ala A 89 2.34 9.69 6.01 Proline Pro P 115 1.99 10.96 6.48 Valine Val V 117 2.32 9.62 5.97 Leucine Leu L 131 2.36 9.60 5.98 Isoleucine lel 131 2.36 9.68 6.02 Methionine Met M 149 2.28 9.21 5.74 Phenylalanine Phe F Tyrosine 165 1.83 9.13 5.48 Tyr Y 181 2.20 9.11 10.07 5.66 Tryptophan Trp W 204 2.38 9.39 5.89 Serine Ser s 105 2.21 9.15 5.68 Threonine ThrT 119 2.11 9.62 5.87 Cysteine Cys C 121 1.96 10.28 8.18 5.07 Asparagine Asn N 132 2.02 8.80 5.41 Glutamine Gin Q 146 2.17 9.13 5.65 Lysine Lys K 146 2.18 8.95 10.53 9.74 Histidine His H 155 1.82 9.17 6.00 7.59 Arginine Arg R 174 2.17 9.04 12.48 10.76 Aspartate Asp D 133 1.88 9.60 3.65 2.77 Glutamate Glu E 147 2.19 9.67 4.25 3.22 What is the NET CHARGE of the short peptide shown below at pH 7.0? Identify the charged groups in the peptides. N' - Arg - Asn - Tyr – Gly - Glu – His - Phe - C'
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