Synopsis
Life in an aerobic environment comes with a cost, like that of oxidative damage to several kinds of macromolecules. Partially reduced oxygen species (superoxide anion, hydrogen peroxide) react with transition metals to generate hydroxyl radicals. Nitric oxide, peroxynitrite, and other species can also be involved in DNA damage. Ionizing radiation also forms hydroxyl radical. The most abundant product arising from DNA oxidation is 8-oxo-7,8-dihydroguanne, but a plethora of oxidation products is also formed, and miscoding properties of all have not been characterized. In addition to the damage to the DNA bases, the individual five carbons of the deoxyribose sugar ring can all be attacked by radicals, yielding products with split sugar rings and in some cases DNA fragmentation.
Introduction
A considerable amount of literature exists on oxidative damage to DNA, and this section is not intended to be comprehensive (see Cadet et...
References
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Guengerich, F.P. (2014). Oxidative DNA Damage. In: Bell, E. (eds) Molecular Life Sciences. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-6436-5_441-1
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DOI: https://doi.org/10.1007/978-1-4614-6436-5_441-1
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