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Backbone dihedral angles (in degrees) in the X-ray structures solved in this work.
| Peptide | Pro |
Xaaa |
Val |
H-bonded conformation | |||
|---|---|---|---|---|---|---|---|
| φ | ψ | φ | ψ | φ | ψ | ||
| Piv-Pro-Ac3c-Val-NHMe (2b) | -65 | 143 | 74 | 2 | -130 | -49 | C10, C13 |
| Piv-Pro-Ac5c-Val-NHMe (3b) | -61 | 125 | 62 | 19 | -74 | 135 | C10 |
| Boc-Gly-Val-NHMe (4a) | -156 | 155 | -130 | 144 | - | ||
| Ac-Ac3c-Val-NHMe (5c) | -77 | -11 | -129 | 159 | - | ||
| Piv-Ac5c-Val-NHMe (6b) | -60 | -32 | -90 | 7 | C10 | ||
Xaa stands for Gly, Ac3c or Ac5c.
