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EC 1.10.3.2 Details
EC number
1.10.3.2
Accepted name
laccase
Reaction
4 benzenediol + O2 = 4 benzosemiquinone + 2 H2O
Other name(s)
urishiol oxidase, urushiol oxidase, p-diphenol oxidase
Systematic name
benzenediol:oxygen oxidoreductase
CAS registry number
80498-15-3
Comment
A group of multi-copper proteins of low specificity acting on both o- and p-quinols, and often acting also on aminophenols and phenylenediamine. The semiquinone may react further either enzymically or non-enzymically.
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