Science. 1992 Aug 28;257(5074):1220-4.

Protein oxidation and aging.

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Laboratory of Biochemistry, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892.

Abstract

A number of systems that generate oxygen free radicals catalyze the oxidative modification of proteins. Such modifications mark enzymes for degradation by cytosolic neutral alkaline proteases. Protein oxidation contributes to the pool of damaged enzymes, which increases in size during aging and in various pathological states. The age-related increase in amounts of oxidized protein may reflect the age-dependent accumulation of unrepaired DNA damage that, in a random manner, affects the concentrations or activities of numerous factors that govern the rates of protein oxidation and the degradation of oxidized protein.

PMID:: 1355616; [PubMed - indexed for MEDLINE]

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Protein oxidation and proteolysis during aging and oxidative stress. [Arch Biochem Biophys. 1989]
Protein oxidation and proteolysis during aging and oxidative stress.
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