part of superoxide dismutase activity https://github.com/geneontology/go-ontology/issues/30193 Reactome:R-HSA-3299680 Reactome:R-HSA-3299682 manganese superoxide dismutase activity erythrocuprein SODS Fe-SOD iron superoxide dismutase activity GO:0016954 Cu-Zn superoxide dismutase activity superoxide dismutase II nickel superoxide oxidoreductase GO:0004784 SOD GO:0004785 RHEA:20696 Reactome:R-HSA-1222462 cytocuprein GO:0008382 Reactome:R-HSA-3777112 copper, zinc superoxide dismutase activity GO:0008383 Reactome:R-HSA-1222469 manganese superoxide oxidoreductase hemocuprein cuprein SOD-2 SOD-3 SOD-4 Mn, Fe superoxide dismutase SOD-1 Mn-SOD Catalysis of the reaction: 2 superoxide + 2 H+ = O2 + H2O2. nickel superoxide dismutase activity Reactome:R-HSA-3299691 hepatocuprein zinc superoxide oxidoreductase EC:1.15.1.1 ferrisuperoxide dismutase activity superoxide:superoxide oxidoreductase activity Cu,Zn-SOD SODF molecular_function iron superoxide oxidoreductase MetaCyc:SUPEROX-DISMUT-RXN superoxide dismutase I antioxidant activity oxidoreductase activity, acting on superoxide radicals as acceptor removal of superoxide radicals