Flexible 5-Guanidino-4-nitroimidazole DNA Lesions: Structures and Thermodynamics
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چکیده
منابع مشابه
Efficient synthesis of DNA containing the guanine oxidation-nitration product 5-guanidino-4-nitroimidazole: generation by a postsynthetic substitution reaction.
[reaction: see text] A convertible nucleoside was synthesized and used to prepare the 2'-deoxynucleoside of 5-guanidino-4-nitroimidazole, a putative in vivo product of the reaction of peroxynitrite with guanine. The convertible nucleoside was incorporated into an oligodeoxynucleotide by the phosphoramidite method and converted postsynthetically to yield an oligodeoxynucleotide containing 5-guan...
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The in vivo mutagenic properties of 2-aminoimidazolone and 5-guanidino-4-nitroimidazole, two products of peroxynitrite oxidation of guanine, are reported. Two oligodeoxynucleotides of identical sequence, but containing either 2-aminoimidazolone or 5-guanidino-4-nitroimidazole at a specific site, were ligated into single-stranded M13mp7L2 bacteriophage genomes. Wild-type AB1157 Escherichia coli ...
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ژورنال
عنوان ژورنال: Biochemistry
سال: 2006
ISSN: 0006-2960,1520-4995
DOI: 10.1021/bi0601757