Tryptophan
Trp
Tyrosine
Tyr
Valine
Val
Selenocysteine
(21st) Sec
Pyrrolysine
( 22nd) Pyr
1 letter symbol
Alanine
A
Arginine
R
Asparagine
N
Aspartic acid
D
Cysteine
C
Glutamine
Q
Glutamic acid
E
Glycine
G
Histidine
H
Isoleucine
I
Leucine
L
Methionine
M
Lysine
K
Phenylalanine
F
Proline
P