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Amino acid
Average MW
Monoisotopic MW
A = Alanine
71.0788
71.03711
C = Cysteine
103.1448
103.00919
D = Aspartic Acid
129.1155
129.04259
E = Glutamic Acid
115.0886
115.02694
F = PhenylAlanine
147.1766
147.06841
G = Glycine
57.052
57.02146
H = Histidine
137.1412
137.05891
I = Isoleucine
113.1595
113.08406
J = PhosphoSerine
167.0782
167.0782
K = Lysine
128.1742
128.09496
L = Leucine
113.1595
113.08406
M = Methionine
131.1986
131.04049
N = Asparagine
114.1039
114.04293
O = PhosphoTyrosine
243.176
243.176
P = Proline
97.1167
97.05276
Q = Glutamine
128.1308
128.05858
R = Arginine
156.1876
156.10111
S = Serine
87.0782
87.03203
T = Threonine
101.1051
101.04768
U = PhosphoThreonine
181.1051
181.1051
V = Valine
99.1326
99.06841
W = Tryptophan
186.2133
186.07931
X =
(S)-2(4'-pentenyl)Alanine
139.084
139.084
Y = Tyrosine
163.176
163.06333
Z = Norleucine
113.1595
113.08406