title: Ab initio calculations on large molecules using molecular fragments. Model peptide studies.
mesh_terms: D000081:Acetamides; D005559:Formamides; D009682:Magnetic Resonance Spectroscopy; D008433:Mathematics; D008956:Models, Chemical; D008968:Molecular Conformation; D009904:Optical Rotation; D010455:Peptides
chemical_list: D000081:Acetamides; D005559:Formamides; D010455:Peptides