Amino acids, one and three letter codes
| Amino acid |
Three letter code |
One letter code |
| Alanine |
ala |
A |
| Arginine |
arg |
R |
| Asparagine |
asn |
N |
| Aspartic acid |
asp |
D |
| Asparagine or aspartic acid |
asx |
B |
| Cysteine |
cys |
C |
| Glutamic acid |
glu |
E |
| Glutamine |
gln |
Q |
| Glutamine or glutamic acid |
glx |
Z |
| Glycine |
gly |
G |
| Histidine |
his |
H |
| Isoleucine |
ile |
I |
| Leucine |
leu |
L |
| Lysine |
lys |
K |
| Methionine |
met |
M |
| Phenylalanine |
phe |
F |
| Proline |
pro |
P |
| Serine |
ser |
S |
| Threonine |
thr |
T |
| Tryptophan |
trp |
W |
| Tyrosine |
tyr |
Y |
| Valine |
val |
V
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