title: NMR spectroscopic detection of cis and trans peptide bonds in unprotected oligo-L-prolines.
mesh_terms: D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D009842:Oligopeptides; D011392:Proline; D011487:Protein Conformation
chemical_list: D009842:Oligopeptides; D011392:Proline