Work

Battles with Iron: Manganese in Oxidative Stress Protection

Year: 2012

Type: review

Abstract: The redox-active metal manganese plays a key role in cellular adaptation to oxidative stress. As a cofactor for manganese superoxide dismutase or through formation of non-proteinaceous manganese antioxidants, this metal can combat oxidative damage without deleterious side effects of Fenton chemistry. In either case, the antioxidant properties of manganese are vulnerable to iron. Cellular pools of iron can outcompete manganese for binding to manganese superoxide dismutase, and through Fenton chemistry, iron may counteract the benefits of non-proteinaceous manganese antioxidants. In this minireview, we highlight ways in which cells maximize the efficacy of manganese as an antioxidant in the midst of pro-oxidant iron.

Source: Journal of Biological Chemistry

DOI: 10.1074/jbc.r111.312181

Authors: J. Dafhne Aguirre, Valeria C. Culotta

Institution: Johns Hopkins University

Language: English

Topic: Redox biology and oxidative stress

Subfield: Molecular Biology

Field: Biochemistry, Genetics and Molecular Biology

Domain: Life Sciences

Open Access status: hybrid

Estimated APC paid: $3,430

Funder: National Institute of Environmental Health Sciences