title: Measurement of circular dichroism and structural chemical research of d(CG)6 and d(TA)6.
abstract: It was known that d(CG)(6) became left-handed Z-DNA by a theoretical calculation. We carried out a CD measurement of d(CG)(6) at room temperature. B-Z transition was occurred when I raised the concentration of Mg salt. In addition, I confirmed that the Mg salt concentration caused B-Z transition by the lower concentration under the existence of cobalt hexamine. Structure of d(TA)(6) is not known. We performed the CD measurement of d(TA)(6) at low temperature. Structure changed from B type when I raised the Mg salt concentration in an existence of cobalt hexamine. I am examining structure now.
authors.affiliation: Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
authors.forename: Yoshitaka
authors.initials: Y
authors.lastname: Tozuka
authors.forename: Yuki
authors.initials: Y
authors.lastname: Yoshikawa
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Ohishi
authors.forename: Yuji
authors.initials: Y
authors.lastname: Kobayashi
authors.forename: Zhou
authors.initials: Z
authors.lastname: Da-Yang
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Nakatani
mesh_terms: D002942:Circular Dichroism; D004247:DNA / Q000737:chemistry*; D043542:DNA, Z-Form / Q000737:chemistry*; D015636:Magnesium Chloride / Q000737:chemistry; D009838:Oligodeoxyribonucleotides / Q000737:chemistry*
chemical_list: D043542:DNA, Z-Form; D009838:Oligodeoxyribonucleotides; D015636:Magnesium Chloride; D004247:DNA