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 |
|
General Properties of Amino Acids
Name
|
Symbol
|
MW
|
MW (-H2O)
|
Structure
|
Solubility (g/100 mL H2O at 25°C)
|
UV Abs Log e
(lmax)
pH ~ 7.0
|
|
Three Letter Code
|
One Letter Code
|
|
Alanine
|
Ala
|
A
|
89.09
|
71.08
|
|
16.65
|
|
|
Arginine
|
Arg
|
R
|
174.20
|
156.19
|
|
15
|
|
|
Asparagine
|
Asn
|
N
|
132.12
|
114.10
|
|
3.53
|
|
|
Aspartic Acid
|
Asp
|
D
|
133.10
|
115.09
|
|
0.778
|
|
|
Cysteine
|
Cys
|
C
|
121.15
|
103.15
|
|
very soluble
|
2.46
(250 nm)
|
|
Glutamic Acid
|
Glu
|
E
|
147.13
|
129.12
|
|
0.864
|
|
|
Glutamine
|
Gln
|
Q
|
146.15
|
128.13
|
|
2.5
|
|
|
Glycine
|
Gly
|
G
|
75.07
|
57.05
|
|
24.99
|
|
|
Histidine
|
His
|
H
|
155.16
|
137.14
|
|
4.19
|
3.77
(211 nm)
|
|
Isoleucine
|
Ile
|
I
|
131.17
|
113.16
|
|
4.117
|
|
|
Leucine
|
Leu
|
L
|
131.17
|
113.16
|
|
2.426
|
|
|
Lysine
|
Lys
|
K
|
146.19
|
128.17
|
|
very
soluble
|
|
|
Methionine
|
Met
|
M
|
149.21
|
131.20
|
|
3.381
|
|
|
Phenylalanine
|
Phe
|
F
|
165.19
|
147.18
|
|
2.965
|
3.97
(206 nm)
2.30
(257 nm)
|
|
Proline
|
Pro
|
P
|
115.13
|
97.12
|
|
162.3
|
|
|
Serine
|
Ser
|
S
|
105.09
|
87.08
|
|
5.023
|
|
|
Threonine
|
Thr
|
T
|
119.12
|
101.11
|
|
very
soluble
|
|
|
Tryptophan
|
Trp
|
W
|
204.23
|
186.21
|
|
1.136
|
4.67
(219 nm)
3.75
(280 nm)
|
|
Tyrosine
|
Tyr
|
Y
|
181.19
|
163.18
|
|
0.0453
|
3.90
(222 nm)
3.15
(274 nm)
|
|
Valine
|
Val
|
V
|
117.15
|
99.13
|
|
8.85
|
|
References
-
The Merck Index, Merck & Co., Inc., Whitehouse Station, NJ 12 (1996).
-
CRC Handbook of Chemistry and Physics, CRC Press, Inc., Cleveland, OH, 58 (1977).
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