title: [Calculation of the conformation of stereo-regular, double-spiral polynucleotides].
abstract: By the step-by-step selection method energetically optimal conformation of double-stranded polynucleotides were calculated proceeding from the conformations of mono-and dinucleotides. These structures were found to belong to the families of DNA A and B forms. The dependence of six torsion angles of the polynucleotide chain on the glycosidic angle chi was investigated. As a result certain areas admitting of double-helix polynucleotides with sugar C3-endo with chi = -80 degrees were established.
mesh_terms: D004277:DNA, Single-Stranded; D009690:Nucleic Acid Conformation; D011119:Polynucleotides
chemical_list: D004277:DNA, Single-Stranded; D011119:Polynucleotides
vernacular_title: Raschety konformatsiĭ stereoreguliarnykh dvuspiral'nykh polinukleotidov