| Amino Acid | 3-Letter | 1-Letter | Side-chain polarity | Side-chain charge (pH 7.4) |
|---|---|---|---|---|
| Alanine | Ala | A | Nonpolar | Neutral |
| Arginine | Arg | R | Basic polar | Positive |
| Asparagine | Asn | N | Polar | Neutral |
| Aspartic acid | Asp | D | Acidic polar | Negative |
| Cysteine | Cys | C | Nonpolar | Neutral |
| Glutamic acid | Glu | E | Acidic polar | Negative |
| Glutamine | Gln | Q | Polar | Neutral |
| Glycine | Gly | G | Nonpolar | Neutral |
| Histidine | His | H | Basic polar | Positive(10%) Neutral(90%) |
| Isoleucine | Ile | I | Nonpolar | Neutral |
| Leucine | Leu | L | Nonpolar | Neutral |
| Lysine | Lys | K | Basic polar | Positive |
| Methionine | Met | M | Nonpolar | Neutral |
| Phenylalanine | Phe | F | Nonpolar | Neutral |
| Proline | Pro | P | Nonpolar | Neutral |
| Serine | Ser | S | Polar | Neutral |
| Threonine | Thr | T | Polar | Neutral |
| Tryptophan | Trp | W | Nonpolar | Neutral |
| Tyrosine | Tyr | Y | Polar | Neutral |
| Valine | Val | V | Nonpolar | Neutral |
