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| Parent Class: | EC-Numbers → 1 -- Oxidoreductases → 1.11 -- Acting on a peroxide as acceptor → 1.11.1 -- Peroxidases |
Synonyms: equilase, caperase, optidase, catalase-peroxidase, CAT
Systematic Name: hydrogen-peroxide:hydrogen-peroxide oxidoreductase
Unification Links: BRENDA:1.11.1.6, ENZYME:1.11.1.6, IUBMB-ExplorEnz:1.11.1.6
Reaction:
2 hydrogen peroxide → 2 H2O + dioxygen
Unofficial Reactions:
ethanol + hydrogen peroxide → acetaldehyde + 2 H2O,
methanol + hydrogen peroxide → formaldehyde + 2 H2O
Enzymes and Genes:
catalase HPII: katE ( Escherichia coli K-12 substr. MG1655 )
adenine deaminase: adeD ( Escherichia coli K-12 substr. MG1655 )
catalase (peroxisomal): CTA1 ( [Candida] boidinii )
catalase 3: CAT3 ( Arabidopsis thaliana col )
catalase 2: CAT2 ( Arabidopsis thaliana col )
catalase 1: CAT1 ( Arabidopsis thaliana col )
catalase: CAT ( Homo sapiens )
Summary:
A manganese protein containing MnIII in the resting state, which also belongs here, is often called pseudocatalase. The enzymes from some organisms, such as Penicillium simplicissimum, can also act as a peroxidase ( EC 1.11.1.7) for which several organic substances, especially ethanol, can act as a hydrogen donor. Enzymes that exhibit both catalase and peroxidase activity belong under EC 1.11.1.21, catalase-peroxidase.
Citations: [Herbert48, Herbert48a, Kono83]
References
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Please cite the following article in publications resulting from the use of MetaCyc: Caspi et al, Nucleic Acids Research 46(D1):D633-D639 2018
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