title: Pyrrolidine ring conformations in prolyl peptides from 13C spin-lattice relaxation times.
abstract: A method was developed in the framework of a bistable jump model to obtain the pyrrolidine ring conformations in proline peptides from 13C spin-lattice relaxation times. Equations are presented expressing the ring torsions in terms of the 13C spin-lattice relaxation times of the ring carbons. This method was applied to 26 pyrrolidine ring systems and acceptable conformations were obtained.
mesh_terms: D009682:Magnetic Resonance Spectroscopy; D008433:Mathematics; D010455:Peptides; D011392:Proline / Q000032:analysis*; D011487:Protein Conformation; D011759:Pyrrolidines / Q000032:analysis*
chemical_list: D010455:Peptides; D011759:Pyrrolidines; D011392:Proline