title: Theoretical analysis of pyrrolidine ring puckering and the conformational energies of proline and 5-methylproline dimers.
mesh_terms: D003461:Crystallography; D004151:Dipeptides; D005998:Glycine; D007930:Leucine; D008433:Mathematics; D008961:Models, Structural; D008968:Molecular Conformation; D009842:Oligopeptides; D010456:Peptides, Cyclic; D011392:Proline; D011759:Pyrrolidines; D013816:Thermodynamics; D014105:Tosyl Compounds
chemical_list: D004151:Dipeptides; D009842:Oligopeptides; D010456:Peptides, Cyclic; D011759:Pyrrolidines; D014105:Tosyl Compounds; D011392:Proline; D007930:Leucine; D005998:Glycine