Table 1 |
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Preferred and avoided amino acids from proteomes of 10 hyperthermophiles (HT) and thermophiles (T), and 18 mesophiles (M) |
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| HT and T |
M |
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|
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| Prokarya |
Prokarya |
Eukarya |
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|
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| Amino acids |
Secondary structures♣ |
Polar requirement* |
Average (range) |
Average (range) |
Ratio (HT, T)/M |
|
|
|
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| Gln (Q) |
α-helix |
8.60 |
1.88 (1.44-2.08) |
4.19(3.25-5.5) |
4.28 (3.97-5.24) |
0.44 |
| His (H) |
α-helix |
8.40 |
1.53 (1.43-1.9) |
2.29 (1.83-2.74) |
2.4(2.15-2.68) |
0.65 |
| Ala (A) |
α-helix |
7.00 |
6.38 (5.44-7.84) |
9.83 (6-13) |
7.64(6.19-11.1) |
0.73 |
| Cys (C) |
β-strand |
4.8 |
0.81 (0.56-1.27) |
1.09 (0.67-1.91) |
1.84(1.27-2.21) |
0.62 |
| Glu (E) |
α-helix |
12.50 |
8.11 (5.53-9.6) |
5.8(4.4-7.08) |
6.6 (6.39-6.99) |
1.34 |
| Lys (K) |
α-helix |
10.10 |
7.5 (4.5-10.4) |
4.56 (2.61-10) |
6.28 (5.6-7.29) |
1.49 |
| Tyr (Y) |
β-strand |
5.40 |
4.08 (3.2-4.82) |
2.74 (1.9-3.48) |
3.01 (2.76-3.35) |
1.45 |
| Ile (I) |
β-strand |
4.90 |
8.42 (7.18-10.5) |
5.5(3.28-8.64) |
5.46 (4.43-6.51) |
1.52 |
|
|
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*Taken from 14; ♣Taken from 16; data on HT. T. M in %; only ratios >1.3 and <0.8 are shown. |
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|
de Farias and Bonato Genome Biology 2002 3:preprint0006.1 doi:10.1186/gb-2002-3-8-preprint0006 |
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