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- W2201051639 abstract "Abstract 8-Oxo-2′-deoxyguanosine, 8-Oxoguanine, 8 -Hydroxyguanine, Base Modification, DNA Oxidative Damage The influence of 2′-deoxyguanosine (dG) oxidation at the C-8 position on N-glycosidic bond stability was in vestigated. A kinetic analysis of dG and 8-oxo-2′-deoxy-guanosine (8-oxodG) depurination reactions was carried out in water solutions at pH ranging from 2 to 7.4 and temperature of 100 °C. The results indicate that N-glyco sidic bond of 8-oxodG is significantly more stable in comparison with dG at any pH applied. At pH 5.1 hydrolysis rate of dG is 4.5-fold higher than that for 8-oxodG. The chemical stability of the modified nucleo side in oxidatively damaged DNA is one of important factors contributing to its mutagenic potential. Results of our experiments indicate that 8-oxodG, potentially mutagenic and carcinogenic nucleoside, is hardly suscep tible to spontaneous depurination and its removal from cellular DNA depends mostly on the activity of DNA repair enzymes." @default.
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- W2201051639 date "1996-02-01" @default.
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- W2201051639 title "Effect of 2'-Deoxyguanosine Oxidation at C 8 Position on N-Glycosidic Bond Stability" @default.
- W2201051639 doi "https://doi.org/10.1515/znc-1996-1-219" @default.
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