Resources » Technical Resource Centers » Peptide Technical Resources » Amino Acid Structure Chart
The properties of amino acids are determined by the functional substituents linked on the side chains, which are most commonly referred to as R groups. In the amino acid chart listed here, we describe the 20 standard residues found in nature, along with the universal genetic codes.
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Name | 3-Letter Symbol | 1-Letter Symbol | Formula | Molecular Weight | Isoelectric Point | Structure |
---|---|---|---|---|---|---|
Alanine | ALA | A | C3H7N1O2 | 89.09 | 6.00 | |
Isoleucine | ILE | I | C6H13N1O2 | 131.17 | 5.94 | |
Leucine | LEU | L | C6H13N1O2 | 131.17 | 5.98 | |
Valine | VAL | V | C5H11N1O2 | 117.15 | 5.96 |
Name | 3-Letter Symbol | 1-Letter Symbol | Formula | Molecular Weight | Isoelectric Point | Structure |
---|---|---|---|---|---|---|
Phenylalanine | PHE | F | C9H11N1O2 | 165.19 | 5.48 | |
Tryptophan | TRP | W | C11H12N2O2 | 204.23 | 5.89 | |
Tyrosine | TYR | Y | C9H11N1O3 | 181.19 | 5.66 |
Name | 3-Letter Symbol | 1-Letter Symbol | Formula | Molecular Weight | Isoelectric Point | Structure |
---|---|---|---|---|---|---|
Asparagine | ASN | N | C4H8N2O3 | 132.12 | 5.41 | |
Cysteine | CYS | C | C3H7N1O2S1 | 121.16 | 5.02 | |
Glutamine | GLN | Q | C5H10N2O3 | 146.15 | 5.65 | |
Methionine | MET | M | C5H11N1O2S1 | 149.21 | 5.74 | |
Serine | SER | S | C3H7N1O3 | 105.09 | 5.68 | |
Threonine | THR | T | C4H9N1O3 | 119.12 | 5.64 |
Name | 3-Letter Symbol | 1-Letter Symbol | Formula | Molecular Weight | Isoelectric Point | Structure |
---|---|---|---|---|---|---|
Arginine | ARG | R | C6H14N4O2 | 174.2 | 11.15 | |
Histidine | HIS | H | C6H9N3O2 | 155.16 | 7.47 | |
Lysine | LYS | K | C6H14N2O2 | 146.19 | 9.59 |
Name | 3-Letter Symbol | 1-Letter Symbol | Formula | Molecular Weight | Isoelectric Point | Structure |
---|---|---|---|---|---|---|
Aspartic Acid | ASP | D | C4H7N1O4 | 133.1 | 2.77 | |
Glutamic Acid | GLU | E | C5H9N1O4 | 147.13 | 3.22 |
Name | 3-Letter Symbol | 1-Letter Symbol | Formula | Molecular Weight | Isoelectric Point | Structure |
---|---|---|---|---|---|---|
Glycine | GLY | G | C2H5N1O2 | 75.07 | 5.97 | |
Proline | PRO | P | C5H9N1O2 | 115.13 | 6.30 |
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