| single-letter Code |
Amino Acid | three-letter Code |
|---|---|---|
| A | Alanine | Ala |
| C | Cysteine | Cys |
| D | Aspartic Acid | Asp |
| E | Glutamic Acid | Glu |
| F | Phenylalanine | Phe |
| G | Glycine | Gly |
| H | Histidine | His |
| I | Isoleucine | Ile |
| K | Lysine | Lys |
| L | Leucine | Leu |
| M | Methionine | Met |
| N | Asparagine | Asn |
| P | Proline | Pro |
| Q | Glutamine | Gln |
| R | Arginine | Arg |
| S | Serine | Ser |
| T | Threonine | Thr |
| V | Valine | Val |
| W | Tryptophan | Trp |
| Y | Tyrosine | Tyr |
| X | Unknown | Unk |