<P> Superoxide dismutase ( SOD , EC 1.15. 1.1 ) is an enzyme that alternately catalyzes the dismutation ( or partitioning ) of the superoxide ( O ) radical into either ordinary molecular oxygen ( O ) or hydrogen peroxide ( H O ) . Superoxide is produced as a by - product of oxygen metabolism and , if not regulated , causes many types of cell damage . Hydrogen peroxide is also damaging and is degraded by other enzymes such as catalase . Thus , SOD is an important antioxidant defense in nearly all living cells exposed to oxygen . One exception is Lactobacillus plantarum and related lactobacilli , which use a different mechanism to prevent damage from reactive ( O ) . </P>
<P> Superoxide dismutase ( SOD , EC 1.15. 1.1 ) is an enzyme that alternately catalyzes the dismutation ( or partitioning ) of the superoxide ( O ) radical into either ordinary molecular oxygen ( O ) or hydrogen peroxide ( H O ) . Superoxide is produced as a by - product of oxygen metabolism and , if not regulated , causes many types of cell damage . Hydrogen peroxide is also damaging and is degraded by other enzymes such as catalase . Thus , SOD is an important antioxidant defense in nearly all living cells exposed to oxygen . One exception is Lactobacillus plantarum and related lactobacilli , which use a different mechanism to prevent damage from reactive ( O ) . </P>
where is superoxide dismutase found in the body
where is superoxide dismutase found in the body
enzyme
enzyme