Amino Acid Abbreviations

Glycine

Glycine

3-letter: Gly

single letter: G

Alanine

3-letter: Ala

single letter: A

Valine

3-letter: Val

single letter: V

Leucine

3-letter: Leu

single letter: L

Isoleucine

3-letter: Ile

single letter: I

Proline

3-letter: Pro

single letter: P

Methionine

3-letter: Met

single letter: M

Phenylalanine

3-letter: Phe

single letter: F

Mnemonic to remember (The “Ph-” in phenylalanine sounds like the letter “F”)

Tryptophan

3-letter: Trp

single letter: W

Mnemonic for single letter: Say it like you’re trying to be cringe Ex: tWyptophan (>3<)

Tyrosine

3-letter: Tyr

single letter: Y

Serine

3-letter: Ser

single letter: S

Threonine

3-letter: Thr

single letter: T

Cysteine

3-letter: Cys

single letter: C

Aspartic Acid (Aspartate)

3-letter: Asp

single letter: D

Mnemonic for single letter: asparDic acid, emphasis on the T to sound like a D.

Glutamic Acid (Glutamate)

3-letter: Glu

single letter: E

Mnemonic for single letter: “Glu-” sounds like” Glue”, with an E

Asparagine

3-letter: Asn

single letter: N

Glutamine

3-letter: Gln

single letter: Q

Mnemonic for single letter: Glutamine sounds like Q-tamine

Histidine

3-letter: His

single letter: H

Lysine

3-letter: Lys

single letter: K

Mnemonic for single letter: L is the letter that comes after K.

Arginine

3-letter: Arg

single letter: R

Mnemonic for single letter: R-ginine