Table 1 The amino acids and their monoisotopic and average masses used for computing the molecular weight of a protein or a peptide are reported (source [20]).
From: A Perl procedure for protein identification by Peptide Mass Fingerprinting
Amino acid | Monoisotopic mass | Average mass | |
|---|---|---|---|
Alanine | A | 71.04 | 71.08 |
Arginine | R | 156.10 | 156.19 |
Asparagine | N | 114.04 | 114.10 |
Aspartic acid | D | 115.03 | 115.09 |
Cysteine | C | 103.01 | 103.14 |
Glutamic acid | E | 129.04 | 129.12 |
Glutamine | Q | 128.06 | 128.13 |
Glycine | G | 57.02 | 57.05 |
Histidine | H | 137.06 | 137.14 |
Isoleucine | I | 113.08 | 113.16 |
Leucine | L | 113.08 | 113.16 |
Lysine | K | 128.09 | 128.17 |
Methionine | M | 131.04 | 131.19 |
Phenylalanine | F | 147.07 | 147.18 |
Proline | P | 97.05 | 97.12 |
Serine | S | 87.03 | 87.08 |
Threonine | T | 101.05 | 101.11 |
Tryptophan | W | 186.08 | 186.21 |
Tyrosine | Y | 163.06 | 163.18 |
Valine | V | 99.07 | 99.13 |