30
a amino acid
abbreviation
formula
*histidine
His
H
glycine
Gly
G
glutamine
Gln
Q
glutamic acid
Glu
E
cysteine
Cys
C
aspartic acid
Asp
D
asparagine
Asn
N
arginine
Arg
R
alanine
Ala
A
*isoleucine
Ile
I
*leucine
Leu
L
*lysine
Lys
K
CH 3
COOH
NH 2
H
C
NH
H 2 N
C NH CH 2 CH 2 CH 2 C COOH
NH 2
H
H 2 N
C
O
CH 2 C COOH
NH 2
H
CH 2 C COOH
NH 2
H
HOOC
HS
CH 2 C COOH
NH 2
H
CH 2 C COOH
NH 2
H
CH 2
HOOC
CH 2 C COOH
NH 2
H
CH 2
H 2 N
C
O
C COOH
NH 2
H
H
HC C
CH 2 C COOH
NH 2
H
NH
N
C
H
CH C COOH
NH 2
H
CH 3
CH 2
CH 3
H 3 C
H 3 C
CH CH 2
C COOH
NH 2
H
H 2 N CH 2 CH 2 CH 2 CH 2 C COOH
NH 2
H
3-letter
1-letter
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