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Elemental activities, such as catalysis or binding, describing the actions of a gene product at the molecular level. A given gene product may exhibit one or more molecular functions. Inhibition of the reactions brought about by dioxygen (O2) or peroxides. Usually the antioxidant is effective because it can itself be more easily oxidized than the substance protected. The term is often applied to components that can trap free radicals, thereby breaking the chain reaction that normally leads to extensive biological damage. Catalysis of an oxidation-reduction (redox) reaction in which a superoxide radical (O2- or O2.-) acts as a hydrogen or electron acceptor. Catalysis of an oxidation-reduction (redox) reaction, a reversible chemical reaction in which the oxidation state of an atom or atoms within a molecule is altered. One substrate acts as a hydrogen or electron donor and becomes oxidized, while the other acts as hydrogen or electron acceptor and becomes reduced. Catalysis of the reaction: 2 superoxide + 2 H+ = O2 + H2O2.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: superoxide dismutase activity
Acc: GO:0004784
Aspect: Molecular Function
Desc: Catalysis of the reaction: 2 superoxide + 2 H+ = O2 + H2O2.
Synonyms:
  • Cu-Zn superoxide dismutase activity
  • GO:0008382
  • nickel superoxide dismutase activity
  • nickel superoxide oxidoreductase
  • superoxide:superoxide oxidoreductase activity
  • Mn, Fe superoxide dismutase
  • GO:0008383
  • manganese superoxide oxidoreductase
  • SODS
  • GO:0004785
  • Mn-SOD
  • Cu,Zn-SOD
  • superoxide dismutase I
  • manganese superoxide dismutase activity
  • cuprein
  • cytocuprein
  • hemocuprein
  • GO:0016954
  • Fe-SOD
  • copper, zinc superoxide dismutase activity
  • ferrisuperoxide dismutase activity
  • SOD
  • erythrocuprein
  • hepatocuprein
  • superoxide dismutase II
  • iron superoxide oxidoreductase
  • zinc superoxide oxidoreductase
  • SOD-3
  • SODF
  • SOD-4
  • iron superoxide dismutase activity
  • SOD-1
  • SOD-2
Proteins in PDR annotated with:
   This term: 65 [Search]
   Term or descendants: 65 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0004784 - superoxide dismutase activity (interactive image map)
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