superoxide dismutasemedical dictionary

<enzyme>

<cell biology> Any of a range of metalloenzymes that catalyses the formation of hydrogen peroxide and oxygen from superoxide and thus protects against superoxide induced damage.

Usually has either iron or manganese as the metal cation in prokaryotes, copper or zinc in eukaryotes.

This entry appears with permission from the Dictionary of Cell and Molecular Biology

(11 Mar 2008)