From: Preferred codons and amino acid couples in hyperthermophiles
HT and T | M | |||||
---|---|---|---|---|---|---|
Prokarya | Prokarya | Eukarya | ||||
Amino acids | Secondary structures♣ | Polar requirement* | Average (range) | Average (range) | Ratio (HT, T)/M | |
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 |