Essential and Non-Essential Amino Acids: Structures and Codes

Alanine

Three letter code: Ala; A

Glycine

Three letter code: Gly; G

Isoleucine

Three letter code: Ile; I

Leucine

Three letter code: Leu; L

Proline

Three letter code: Pro; P

Phenylalanine

Three letter code: Phe; F

Lysine

Three letter code: Lys; K

Valine

Three letter code: Val; V

Tryptophan

Three letter code: Trp; W

Tyrosine

Three letter code: Tyr; Y

Aspartic Acid

Three letter code: Asp; D

Glutamic Acid

Three letter code: Glu; E

Arginine

Three letter code: Arg; R

Histidine

Three letter code: His; H

Serine

Three letter code: Ser; S

Threonine

Three letter code: Thr; T

Cysteine

Three letter code: Cys; C

Methionine

Three letter code: Met; M

Asparagine

Three letter code: Asn; N

Glutamine

Three letter code: Gln; Q