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Gel electrophoretic detection of 7,8-dihydro-8-oxoguanine and 7, 8- dihydro-8-oxoadenine via oxidation by Ir (IV)
Author(s) -
James G. Muller
Publication year - 1998
Publication title -
nucleic acids research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 9.008
H-Index - 537
eISSN - 1362-4954
pISSN - 0305-1048
DOI - 10.1093/nar/26.9.2247
Subject(s) - biology , electrophoresis , microbiology and biotechnology , biochemistry , genetics
Two gel electrophoretic methods are described for detection of 7, 8-dihydro-8-oxoguanine and 7,8-dihydro-8-oxoadenine based on their further oxidation with one-electron oxidants including IrCl62-and IrBr62-. The products of nucleobase oxidation lead to enhanced piperidine-sensitive cleavage and to highly visible stop points in a primer extension assay. 8-oxoG and 8-oxoA lesions may be distinguished by the latter's inability to be oxidized by IrBr62-compared to IrCl62-Comparison is also made to oxidation by MnO4-.

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