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. 1985 Dec;64:331–342. doi: 10.1289/ehp.8564331

Physiological aspects of free-radical reactions.

I Yamazaki, M Tamura, R Nakajima, M Nakamura
PMCID: PMC1568608  PMID: 3007098

Abstract

Enzymes which catalyze the formation of free radicals in vitro will catalyze similar reactions in vivo. We believe that the formation of some kinds of free radicals has definite physiological meanings in metabolism. In this sense, the enzymes forming such free radicals are concluded to be in evolutionally advanced states. Elaborated structure and function of enzymes such as horseradish peroxidase and microsomal flavoproteins support the idea. Deleterious and side reactions caused by free radicals are assumed to be minimized in vivo by localizing the reactions, but this assumption should be verified by future studies.

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Selected References

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