Journal
CURRENT MEDICINAL CHEMISTRY
Volume 11, Issue 9, Pages 1105-1112Publisher
BENTHAM SCIENCE PUBL LTD
DOI: 10.2174/0929867043365341
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Organisms are constantly exposed to many different forms of reactive oxygen species and reactive nitrogen species that damage proteins, nucleic acids, and lipids, leading to loss of biological function. The possibility that reactive oxygen/nitrogen-mediated protein damage contributes to the aging process is supported by results of many studies showing that aging is associated with the accumulation of such protein damage. Summarized here are results of studies, showing that the accumulation of protein damage is a complex function of a multiplicity of factors that govern the intracellular levels of reactive oxygen/nitrogen species, on the one hand, and a multiplicity of factors that govern the degradation and/or repair of damaged proteins, on the other. Basic mechanisms involved in the modification of proteins by various forms of reactive oxygen/nitrogen species are also discussed.
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