20 Common Amino Acids By 1 Letter Abbreviation

A

Alanine

R

Arginine

N

Asparagine

D

Aspartic Acid

C

Cysteine

E

Glutamic Acid

Q

Glutamine

G

Glycine

H

Histidine

I

Isoleucine

L

Leucine

K

Lysine

M

Methionine

F

Phenylalanine

P

Proline

S

Serine

T

Threonine

Y

Tyrosine

W

Tryptophan

V

Valine

A

Alanine

R

Arginine

N

Asparagine

D

Aspartic Acid

C

Cysteine

E

Glutamic Acid

Q

Glutamine

G

Glycine

H

Histidine

I

Isoleucine

L

Leucine

K

Lysine

M

Methionine

F

Phenylalanine

P

Proline

S

Serine

T

Threonine

Y

Tyrosine

W

Tryptophan

V

Valine