Table 2.
20 amino acids and internal standards.
| Abbreviation | Common Name | Internal standards |
|---|---|---|
| Asn | Asparagine | L-Aspartate-d3 |
| His | Histidine | DL-Histidine-d3 |
| Arg | Arginine | L-Arginine-13C6,15N4 |
| Ser | Serine | L-13C3-Serine |
| Gly | Glycine | 15N;2-13 C-Glycine |
| Gln | Glutamine | L-Glutamine-d5 |
| Lys | Lysine | L-Lysine-d4 |
| Thr | Threonine | L-Threonine-d5 |
| Ala | Alanine | 2H4-Alanine |
| Glu | Glutamate | 2H2-Glutamate |
| Pro | Proline | DL-Proline-d3 |
| Cys | Cysteine | DL-Cystine-d6 |
| Tyr | Tyrosine | 13C6-Tyrosine |
| Val | Valine | 2H8-Valine |
| Met | Methionine | 2H4-Methionine |
| ILe | Isoleucine | 2H3-Leucine |
| Leu | Leucine | 2H3-Leucine |
| Phe | Phenylalanine | 13C6-Phenylalanine |
| Trp | Tryptophan | L-Tryptophan-d3 |
| Asp | Aspartic acid | L-Aspartate-d3 |