Table 2. Dependence of the water:amino acid ratio on 1 torsion-angle conformation (g+/g/t) in various secondary structures.
Residues which are discussed in greater detail in the text are highlighted in bold.
| -Helix (H) | -Sheet (E) | Turn (T) | |||||||
|---|---|---|---|---|---|---|---|---|---|
| g+ | g | t | g+ | g | t | g+ | g | t | |
| Hydrophobic† | |||||||||
| Leu | 0.6 | 0.4 | 0.2 | 0.2 | 0.5 | 0.5 | 1.0 | 1.0 | 0.9 |
| Trp | 1.0 | 0.7 | 0.7 | 0.8 | 1.0 | 0.8 | 1.3 | 1.4 | 1.4 |
| All‡ | 0.6 | 0.4 | 0.3 | 0.4 | 0.5 | 0.5 | 0.8 | 0.9 | 1.0 |
| Moderately polar† | |||||||||
| His | 1.7 | 1.5 | 1.4 | 1.2 | 1.3 | 1.3 | 1.6 | 1.8 | 1.6 |
| Ser | 1.5 | 1.4 | 1.5 | 1.4 | 1.6 | 1.3 | 1.6 | 1.8 | 1.5 |
| Thr | 1.3 | 1.3 | 1.3 | 1.4 | 1.8 | 0.9 | 1.6 | 1.7 | 1.4 |
| Tyr | 1.7 | 1.2 | 1.2 | 1.2 | 1.3 | 1.3 | 1.7 | 1.7 | 1.9 |
| All | 1.4 | 1.3 | 1.3 | 1.3 | 1.5 | 1.2 | 1.6 | 1.8 | 1.6 |
| Very polar† | |||||||||
| Arg | 2.4 | 2.2 | 1.9 | 1.8 | 2.0 | 2.0 | 2.4 | 2.4 | 2.4 |
| Asn | 1.8 | 2.2 | 2.0 | 1.5 | 2.0 | 1.7 | 1.8 | 2.4 | 2.2 |
| Asp | 2.3 | 2.8 | 2.4 | 2.1 | 2.5 | 2.2 | 2.3 | 2.8 | 2.4 |
| Gln | 2.0 | 2.0 | 1.9 | 1.8 | 2.0 | 2.0 | 2.0 | 2.3 | 2.3 |
| Glu | 2.3 | 2.3 | 2.3 | 2.1 | 2.4 | 2.4 | 2.5 | 2.6 | 2.7 |
| Lys | 2.0 | 1.8 | 1.6 | 1.5 | 1.7 | 1.8 | 2.0 | 2.0 | 2.1 |
| All | 2.2 | 2.3 | 2.0 | 1.8 | 2.1 | 2.0 | 2.2 | 2.4 | 2.3 |
| All amino acids‡ | 1.4 | 1.4 | 1.1 | 1.1 | 1.1 | 1.1 | 1.5 | 1.8 | 1.8 |
†
Definition of residue type according to Rose et al. (1985 ▸).
‡
Gly and Ala residues are not included.