Amino Acid

Systemic name

Symbol

Structure

Molecular Formula

Molar weight

3

1

Alanine

(S)-2-Aminopropanoic Acid

Ala

A

C₃H₇NO₂

89.09

Arginine

2-Amino-5-(Diaminomethylidene Amino) Pentanoic Acid

Arg

R

C₆H₁₄N₄O₂

174.20

Asparagine

(2S)-2-Amino-3-Carbamoyl-Propanoic Acid

Asn

N

C₄H₈N₂O₃

132.12

Aspartate

(2S)-2-Aminobutanedioic Acid

Asp

D

C₄H₇NO₄

133.10

Cysteine

(2R)-2-Amino-3-Sulfanyl-Propanoic Acid

Cys

C

C₃H₇NO₂S

121.16

Glutamate

(2S)-2-Aminopentanedioic Acid

Glu

E

C₅H₉NO₄

147.13

Glutamine

(2S)-2-Amino-4-Carbamoyl-Butanoic Acid

Gln

Q

C₅H₁₀N₂O₃

146.15

Glycine

Aminoethanoic Acid

Gly

G

C₂H₅NO₂

75.07

Histidine

2-Amino-3-(3H-Imidazol-4-yl) Propanoic Acid

His

H

C₆H₉N₃O₂

155.16

Isoleucine

(2S,3S)-2-Amino-3-Methylpentanoic Acid

Ile

I

C₆H₁₃NO₂

131.18

Leucine

(S)-2-Amino-4-Methyl-Pentanoic Acid

Leu

L

C₆H₁₃NO₂

131.18

Lysine

(S)-2,6-Diaminohexanoic Acid

Lys

K

C₆H₁₄N₂O₂

146.19

Methionine

(S)-2-Amino-4-(Methylsulfanyl)-Butanoic Acid

Met

M

C₅H₁₁NO₂S

149.21

Phenylalanine

2-Amino-3-Phenyl-Propanoic Acid

Phe

F

C₉H₁₁NO₂

165.19

Proline

(S)-Pyrrolidine-2-Carboxylic Acid

Pro

P

C₅H₉NO₂

115.13

Serine

(S)-2-Amino-3-Hydroxypropanoic Acid

Ser

S

C₃H₇NO₃

105.09

Threonine

(2S,3R)-2-Amino-3-Hydroxybutanoic Acid

Thr

T

C₄H₉NO₃

119.12

Tryptophan

(S)-2-Amino-3-(1H-indol-3-yl)-Propanoic Acid

Trp

W

C₁₁H₁₂N₂O₂

204.23

Tyrosine

(S)-2-Amino-3-(4-Hydroxy-Phenyl)-Propanoic Acid

Tyr

Y

C₉H₁₁NO₃

181.19

Valine

(S)-2-Amino-3-Methyl-Butanoic Acid

Val

V

C₅H₁₁NO₂

117.15