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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 the reaction: donor + H2O2 = oxidized donor + 2 H2O. Catalysis of the reaction: 2 H2O2 = O2 + 2 H2O. Catalysis of an oxidation-reduction (redox) reaction in which the peroxide group acts as a hydrogen or electron acceptor.

View Gene Ontology (GO) Term

GO TERM SUMMARY

Name: catalase activity
Acc: GO:0004096
Aspect: Molecular Function
Desc: Catalysis of the reaction: 2 H2O2 = O2 + 2 H2O.
Synonyms:
  • catalase-peroxidase activity
  • GO:0016953
  • optidase activity
  • equilase activity
  • haem catalase activity
  • catalase reaction
  • manganese catalase activity
  • heme catalase activity
  • hydrogen-peroxide:hydrogen-peroxide oxidoreductase activity
  • caperase activity
  • CAT
  • bacterial catalase-peroxidase activity
  • GO:0016952
Proteins in PDR annotated with:
   This term: 36 [Search]
   Term or descendants: 36 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0004096 - catalase activity (interactive image map)

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