title: [Nature of the fluorescence spectra of the DNA-specific dye "Hoechst 33258" in solvents and in DNA complexes].
abstract: Fluorescence spectra of the DNA-specific dye Hoehst 33258 are obtained in a number of solvents. These spectra are interpreted as superpositions of monomeric and dimeric fluorescence bands of this compound. We show that abnormal Stokes' shift in the Hoehst fluorescence occurs only for the dimer form of this dye. It is suggested that formation of the A--T-specific complex is realized by dimers of the Hoehst 33258 located in the narrow groove of DNA.
authors.forename: V N
authors.initials: VN
authors.lastname: Umetskaia
authors.forename: Iu M
authors.initials: IuM
authors.lastname: Rozanov
mesh_terms: D001483:Base Sequence; D006690:Bisbenzimidazole / Q000737:chemistry*; D004247:DNA / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D012997:Solvents; D013050:Spectrometry, Fluorescence
chemical_list: D012997:Solvents; D004247:DNA; D006690:Bisbenzimidazole
vernacular_title: Priroda spektrov fluorestsentsii DNK-spetsifichnogo krasitelia "Khekhst33258" v rastvoriteliakh i v komplekse s DNK.