title: Different forms of the double helix in the pCpGpCpGpCpG crystals.
abstract: Four different crystal forms of the self-complementary oligonucleotide pCpGpCpGpCpG have been obtained. The space groups and the unit cell parameters of these crystals, as well as the location of the base-stacking reflections, indicate that the oligonucleotide is able to assume different double helical conformations that are dependent on the crystallization conditions.
authors.affiliation: Institute of Crystallography, Academy of Sciences of the USSR, Moscow.
authors.forename: V
authors.initials: V
authors.lastname: Tereshko
authors.forename: L
authors.initials: L
authors.lastname: Milinina
mesh_terms: D001483:Base Sequence; D003460:Crystallization; D009690:Nucleic Acid Conformation; D009838:Oligodeoxyribonucleotides; D011089:Polydeoxyribonucleotides; D013096:Spermine; D014961:X-Ray Diffraction
chemical_list: D009838:Oligodeoxyribonucleotides; D011089:Polydeoxyribonucleotides; C019530:poly(dC-dG); D013096:Spermine