Table 1.
Universally abundant compositional biases ***
| Bias | Mean rank * | Number of times in top ten ** |
| {C} | 1.8 | 13 (13) |
| {P} | 2.5 | 13 (13) |
| {GP} | 5.0 | 12 (13) |
| {Q} | 6.5 | 11 (13) |
| {G} | 6.9 | 11 (13) |
| {E} | 8.8 | 11 (13) |
| {S} | 11.5 | 11 (13) |
| {ED} | 15.4 | 6 (12) |
| {H} | 23.7 | 1 (13) |
| {RS} | 26.8 | 1 (13) |
| {T} | 31.5 | 6 (13) |
| {A} | 32.2 | 3 (13) |
| {KE} | 34.9 | 0 (13) |
| {K} | 37.6 | 3 (13) |
| {SR} | 44.6 | 0 (13) |
| {QP} | 45.6 | 3 (13) |
| {R} | 52.5 | 1 (13) |
| {PA} | 53.9 | 0 (12) |
| {PG} | 56.8 | 3 (13) |
| {PM} | 56.9 | 0 (12) |
| {EQKL} | 61.2 | 1 (9) |
| {QH} | 65.9 | 2 (13) |
| {CD} | 68.2 | 1 (13) |
| {GR} | 69.5 | 0 (13) |
| {SP} | 71.8 | 0 (10) |
* Mean rank is simply calculated from averaging over rankings (in decreasing order of abundance) for all thirteen proteomes.
** Number of times the bias appears in the top 10 (with the number of proteomes this bias occurs in, in brackets).
*** The types of CB region have been ranked in increasing order of mean rank for the human proteome.