title: [New packing of B-DNA in crystals].
abstract: Two crystal forms of the self-complementary tetramer GpGpCpC have been obtained by phase diagram technique: P6(2)22/P6(4)22. a = b = 67.7 A, c = 105.6 A and P3(2)12/P3(1)12, a = b = 116.9 A. c = 116.4 A. Both crystals form diffract at least up to 3.2 A. Diffraction patterns of both crystal forms have strongest base-stacking reflections corresponding to the Bragg spacing 3.38 A which is typical for B-DNA. Moreover the self-rotation function of the first crystal form shows regular located two-fold pseudo-axes periodicity of which also indicates that this is B-conformation. The same conclusion can be reached on the basis of the crystal packing of the duplexes in the unit cell. It should be emphasized that this is a new example of B-DNA crystal packing.
authors.forename: G A
authors.initials: GA
authors.lastname: Minasov
authors.forename: V A
authors.initials: VA
authors.lastname: Tereshko
authors.forename: B K
authors.initials: BK
authors.lastname: Chernov
authors.forename: L V
authors.initials: LV
authors.lastname: Malinina
mesh_terms: D003460:Crystallization; D004247:DNA / Q000737:chemistry*; D009690:Nucleic Acid Conformation; D014961:X-Ray Diffraction
chemical_list: D004247:DNA
vernacular_title: Novaia upakovka B-DNK v kristallakh.