Table 1. Protein Blocks characteristics.
For each protein block (PB; labeled from a to p) is given: (i) the occurrence frequency (freq), (ii) the average number of repeats (anr), i.e., the average number of times a PB repeats upon itself, (iii) the three main PB transition proportions to other PBs (major transitions), and the sum of these transitions (sum), only the transition frequencies more than 5% are noted, (iv) the transitions rarely observed, i.e. associated to a frequency < 0.5% (in bold their frequencies are < 0.1%) and, (v) the repartition in secondary structures of the central residue (α-helix, coil and β-strand) assigned by PSEA [16] and STRIDE [17] (in bold are highlighted the frequencies > 50%).
| major transitions (%) | transitions < 0.5 % | PSEA | STRIDE | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1st | 2nd | 3rd | sum. | α(%) | coil(%) | β(%) | α(%) | coil(%) | β(%) | |
| 51.0(c) | 16.9(f) | 9.4(d) | 77.3 | i, l, n, o | 0.1 | 66.7 | 33.2 | 0.1 | 75.8 | 24.1 |
| 48.4(d) | 15.9(c) | 12.9(f) | 77.2 | i, k, n, o | 0.1 | 96.7 | 3.2 | 0.1 | 85.3 | 14.6 |
| 62.6(d) | 23.5(f) | 5.7(e) | 91.8 | a, h, i, l, m, n, o, p | 0.8 | 48.9 | 50.3 | 0.0 | 57.6 | 42.4 |
| 50.4(f) | 26.3(c) | 19.9(e) | 96.6 | a, b, g, h, i, k, l, m, n, o, p | 0.0 | 19.6 | 80.4 | 0.0 | 29.0 | 71.0 |
| 81.1(h) | 8.6(d) | 89.7 | a, f, g, i, l, m, n, p | 0.0 | 42.8 | 57.2 | 0.0 | 45.5 | 54.5 | |
| 61.5(k) | 35.0(b) | 96.5 | a, c, d, g, h i, j, l, m, n, o, p | 0.1 | 70.7 | 29.3 | 0.0 | 73.3 | 26.7 | |
| 37.5(h) | 29.6(c) | 16.1(o) | 83.2 | i, j k, l,n | 7.6 | 88.3 | 4.0 | 13.3 | 80.2 | 6.4 |
| 68.0(i) | 13.8(j) | 8.5(k) | 90.3 | a, b, c, d, f, g, m | 0.1 | 76.4 | 23.5 | 2.0 | 76.2 | 21.9 |
| 82.8(a) | 6.2(l) | 89.0 | c, k, m, n, p | 0.0 | 97.8 | 2.1 | 2.0 | 90.3 | 7.7 | |
| 21.7(b) | 14.8(a) | 14.7(k) | 51.2 | g, p | 1.0 | 73.9 | 25.1 | 8.0 | 81.6 | 10.4 |
| 77.2(l) | 10.5(b) | 6.2(o) | 93.9 | a, c, d,e,f, h, i, j, p | 32.7 | 66.7 | 0.6 | 49.3 | 50.2 | 0.5 |
| 68.2(m) | 8.6(p) | 7.1(c) | 83.9 | d, e,h,i, j | 40.4 | 59.5 | 0.1 | 61.0 | 38.6 | 0.4 |
| 34.9(n) | 15.7(p) | 11.3(k) | 61.9 | a, d, e, f,h,i, j, o, | 86.1 | 13.9 | 0.0 | 92.3 | 7.6 | 0.1 |
| 92.4(o) | 92.4 | a, d, e, f,i, j, o | 62.4 | 37.6 | 0.0 | 75.7 | 24.0 | 0.3 | ||
| 78.2(p) | 6.5(m) | 5.6(i) | 90.3 | a, b, d, e,f, h, k | 37.9 | 61.6 | 0.5 | 50.8 | 49.0 | 0.2 |
| 58.6(a) | 23.7(c) | 7.6(m) | 89.9 | b, d, e, h, i, j, k, l, o, p | 9.0 | 87.3 | 3.7 | 17.1 | 81.3 | 1.6 |
| 63.9 | 10.8 | 7.3 | 89.3 | 32.9 | 42.1 | 25.0 | 37.8 | 39.7 | 22.5 | |