title: Conformations of (X-L-Pro-Y)2 cyclic hexapeptides. Preferred beta-turn conformers and implications for beta turns in proteins.
mesh_terms: D000595:Amino Acid Sequence; D002942:Circular Dichroism; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D009842:Oligopeptides; D010456:Peptides, Cyclic; D011392:Proline; D011487:Protein Conformation; D011506:Proteins; D013329:Structure-Activity Relationship
chemical_list: D009842:Oligopeptides; D010456:Peptides, Cyclic; D011506:Proteins; D011392:Proline