Table 2. Amino acid frequency for the kingdoms of life in the Proteome-pI database.
| Kingdom | Ala | Cys | Asp | Glu | Phe | Gly | His | Ile | Lys | Leu | Met | Asn | Pro | Gln | Arg | Ser | Thr | Val | Trp | Tyr | Total amino acids |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Viruses | 6.61 | 1.76 | 5.81 | 6.04 | 4.25 | 5.79 | 2.15 | 6.53 | 6.35 | 8.84 | 2.46 | 5.41 | 4.62 | 3.39 | 5.24 | 7.06 | 6.06 | 6.50 | 1.19 | 3.94 | 6 150 189 |
| Archaea | 8.20 | 0.98 | 6.21 | 7.69 | 3.86 | 7.58 | 1.77 | 7.03 | 5.27 | 9.31 | 2.35 | 3.68 | 4.26 | 2.38 | 5.51 | 6.17 | 5.44 | 7.80 | 1.03 | 3.45 | 89 488 664 |
| Bacteria | 10.06 | 0.94 | 5.59 | 6.15 | 3.89 | 7.76 | 2.06 | 5.89 | 4.68 | 10.09 | 2.38 | 3.58 | 4.61 | 3.58 | 5.88 | 5.85 | 5.52 | 7.27 | 1.27 | 2.94 | 3 716 982 916 |
| Eukaryota | 7.63 | 1.76 | 5.40 | 6.42 | 3.87 | 6.33 | 2.44 | 5.10 | 5.64 | 9.29 | 2.25 | 4.28 | 5.41 | 4.21 | 5.71 | 8.34 | 5.56 | 6.20 | 1.24 | 2.87 | 3 743 221 293 |
| All | 8.76 | 1.38 | 5.49 | 6.32 | 3.87 | 7.03 | 2.26 | 5.49 | 5.19 | 9.68 | 2.32 | 3.93 | 5.02 | 3.90 | 5.78 | 7.14 | 5.53 | 6.73 | 1.25 | 2.91 | 7 555 843 062 |
*Similar statistics for all 5029 proteomes included in Proteome-pI are available online on individual subpages. For di-amino acid frequencies see Supplementary Table S2.