title: [Torsion lability of the O=C-N-H fragment in single dipeptide molecules of L-amino acids].
abstract: On the basis of ab initio MP2 and semi-empirical PM3 quantum-chemical calculations the bistability of the nonplanar O=C-N-H fragment in the structure of simple amides and dipeptides is discussed. The influence of the nature of amino acids on the structural polymorphism of the peptide group in dipeptides is shown.
authors.forename: A A
authors.initials: AA
authors.lastname: Samchenko
authors.forename: A V
authors.initials: AV
authors.lastname: Kabanov
authors.forename: V M
authors.initials: VM
authors.lastname: Komarov
mesh_terms: D000577:Amides / Q000737:chemistry*; D000596:Amino Acids / Q000737:chemistry*; D004151:Dipeptides / Q000737:chemistry*; D011789:Quantum Theory
chemical_list: D000577:Amides; D000596:Amino Acids; D004151:Dipeptides