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EC 1.10.3.1 Details
EC number
1.10.3.1
Accepted name
catechol oxidase
Reaction
2 catechol + O2 = 2 1,2-benzoquinone + 2 H2O
Other name(s)
diphenol oxidase, o-diphenolase, polyphenol oxidase, pyrocatechol oxidase, dopa oxidase, catecholase, o-diphenol:oxygen oxidoreductase, o-diphenol oxidoreductase
Systematic name
1,2-benzenediol:oxygen oxidoreductase
CAS registry number
9002-10-2
Comment
A type 3 copper protein that catalyses exclusively the oxidation of catechol (i.e., o-diphenol) to the corresponding o-quinone. The enzyme also acts on a variety of substituted catechols. It is different from tyrosinase, EC 1.14.18.1, which can catalyse both the monooxygenation of monophenols and the oxidation of catechols.
History
created 1961, deleted 1972, reinstated 1978
EC Tree
1.6.99.2 created 1961 as EC 1.6.5.2, transferred 1965 to EC 1.6.99.2, deleted 2005
1.6.99.4 created 1965, deleted 1972
1.6.99.7 created 1972, modified 1981 (EC 1.6.99.10 created 1978, incorporated 1981), deleted 2003
1.6.99.8 created 1972, deleted 2002
1.6.99.9 created 1972, deleted 2002
1.6.99.10 created 1978, deleted 1981
1.6.99.11 created 1989, deleted 2002
1.6.99.12 created 1989, deleted 2002
1.6.99.13 created 1992, deleted 2002
1.11.1.4 created 1961, deleted 1964, reinstated 1965 as EC 1.13.1.12, deleted 1972