beta_turn_type_six_a SO_0001151
beta_turn_type_six_a
ID: SO_0001151
Class
A motif of four consecutive peptide residues, of which the i+2 residue is proline, and that may contain one H-bond, which, if present, is between the main-chain CO of the first residue and the main-chain NH of the fourth and is characterized by the dihedral angles: Residue(i+1): phi ~ -60 degrees, psi ~ 120 degrees. Residue(i+2): phi ~ -90 degrees, psi ~ 0 degrees.
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Alternative Names
| Synonym | Scope | Reference |
|---|---|---|
| type VIa beta turn | exact synonym | |
| beta turn type six a | exact synonym | |
| type VIa turn | exact synonym |