title: Photoreactivity of 5-iodouracil-containing telomeric DNA.
abstract: The photoreaction of 5-iodouracil-((I)U)-containing telomeric oligonucleotides in parallel or antiparallel structures, generated in the presence of K+ or Na+ ions, was investigated. It was found that the photoreactivity of telomeric DNA depends on the differences in the quadruplex conformations in the presence of K+ or Na+ ions.
mesh_terms: D001483:Base Sequence; D002942:Circular Dichroism; D018360:Crystallography, X-Ray; D004247:DNA / Q000737:chemistry*; D006801:Humans; D019906:Nuclear Magnetic Resonance, Biomolecular; D010777:Photochemistry; D016615:Telomere; D014498:Uracil / Q000031:analogs & derivatives* / Q000737:chemistry*
chemical_list: D014498:Uracil; D004247:DNA; C048747:5-iodouracil