hat
Superoxide Dismutase (mezon EKPOZE, CE 1.15.1.1) se yon nzim sa len apwe te lòt catalyzes a dismutation (, ni moun ki jwe wòl) a superoxide (O2) radikal nan swa òdinè oksijèn moléculaire (O2) oubyen lo oksijene (H2O2). Superoxide te pwodwi tankou yon byen vini pa pwodwi oksijèn du ak, si pa réglementé, lakòz anpil kalite sèlil domaj. Lo oksijene tou pitit mwen riske pèdi epi dégradé pa lòt enzymes tankou catalase. Enben, mezon EKPOZE se yon defans antioxydant enpòtan nan pwèske tout cellules vivan an kontak avè l oksijèn. Yon sèl eksepsyon se Lactobacillus plantarum ki lactobacilli, ki te sèvi ak yon lòt ki asèptab pou anpeche domaj ki sòti nan réactive (O2).
eng
Superoxide Dismutase (SOD, EC 1.15.1.1) is an enzyme that alternately catalyzes the dismutation (or partitioning) of the superoxide (O2) radical into either ordinary molecular oxygen (O2) or hydrogen peroxide (H2O2). 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 (O2).