title: Patterson methods in fibre diffraction analysis.
abstract: The potential of the Patterson methods for X-ray diffraction studies of textures is examined in DNA fibres. Patterson analysis, which is rarely used in these situations, is shown to yield important information on the preliminary interpretation of diffraction patterns and to increase the reliability of the three-dimensional structural pattern obtained for polymeric molecules. We also show how the screw symmetry of helical molecules can be used to calculate their electron density by means of the three-dimensional Patterson function.
authors.affiliation: Institute of Molecular Genetics, Russian Academy of Sciences, Moscow.
authors.forename: D G
authors.initials: DG
authors.lastname: Alexeev
authors.forename: A A
authors.initials: AA
authors.lastname: Lipanov
authors.lastname: Skuratovskii IYa
mesh_terms: D004247:DNA / Q000737:chemistry*; D003626:Data Display; D008968:Molecular Conformation; D009690:Nucleic Acid Conformation; D011067:Poly dA-dT / Q000737:chemistry*; D014961:X-Ray Diffraction / Q000379:methods*
chemical_list: D011067:Poly dA-dT; D004247:DNA