Amino Acid Letter Codes 3 and 1

Alanine (3 letter code)

Ala

Alanine (1 letter code)

A

Valine (3 letter code)

Val

Leucine (3 letter code)

Leu

Isoleucine (3 letter code)

Ile

Methionine(3 letter code)

Met

Phenylalanine (3 letter code)

Phe

Tyrosine (3 letter code)

Tyr

Tryptophan (3 letter code)

Trp

Proline (3 letter code)

Pro

Glycine (3 letter code)

Gly

Serine (3 letter code)

Ser

Cysteine (3 letter code)

Cys

Threonine (3 letter code)

Thr

Aspartic Acid (3 letter code)

Asp

Glutamic Acid (3 letter code)

Glu

Asparagine (3 letter code)

Asn

Glutamine (3 letter code)

Gln

Histidine (3 letter code)

His

Arginine (3 letter code)

Arg

Arginine (1 letter code)

R

Lysine (3 letter code)

Lys

Lysine (1 letter code)

K

Histidine (1 letter code)

H

Glutamine (1 letter code)

Q

Asparagine (1 letter code)

N

Glutamic Acid (1 letter code)

E

Aspartic Acid (1 letter code)

D

Threonine (1 letter code)

T

Cysteine (1 letter code)

C

Serine (1 letter code)

S

Glycine (1 letter code)

G

Proline (1 letter code)

P

Tryptophan (1 letter code)

W

Tyrosine (1 letter code)

Y

Phenylalanine (1 letter code)

F

Methionine (1 letter code)

M

Isoleucine (1 letter code)

I

Leucine (1 letter code)

L

Valine (1 letter code)

V