| Term Name: | beta_turn |
|---|---|
| Synonyms: | beta turn |
| Definition: | A motif of four consecutive residues 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. It is characterized by the dihedral angles of the second and third residues, which are the basis for sub-categorization. |
| Ontology: | Sequence Ontology [SO:0001133] |