Amino acid Table of standard amino acid abbreviations and properties Table of standard amino acid abbreviations and properties

| Amino_Acid | _3_Letter | _1_Letter | Side_chain_polarity | Side_chain_charge_pH_7_4 | Hydropathy_index |
|---|---|---|---|---|---|
| Serine | Ser | S | polar | neutral | −0.8 |
| Threonine | Thr | T | polar | neutral | −0.7 |
| Tryptophan | Trp | W | nonpolar | neutral | −0.9 |
| Tyrosine | Tyr | Y | polar | neutral | −1.3 |
| Valine | Val | V | nonpolar | neutral | 4.2 |