Laccase: Difference between revisions
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oxidoreductase, EC 1.10.3.3) and ceruloplasmin (Fe(II) oxygen | oxidoreductase, EC 1.10.3.3) and ceruloplasmin (Fe(II) oxygen | ||
oxidoreductase, EC 1.16.3.1). Similar to the other laccases the three dimensional struture of CotA [[1w6l]] comprises three cupredoxin domain and four copper ions organised in #<scene name='CotA_laccase/Copper_centers/5'>Two copper centers</scene>: | oxidoreductase, EC 1.16.3.1). Similar to the other laccases the three dimensional struture of CotA [[1w6l]] comprises three cupredoxin domain and four copper ions organised in #<scene name='CotA_laccase/Copper_centers/5'>Two copper centers</scene>: | ||
a mononuclear blue type 1 copper center and scene name='CotA_laccase/Copper_centers/ | a mononuclear blue type 1 copper center and <scene name='CotA_laccase/Copper_centers/7'>a trinuclear center</scene> | ||
#<scene name='CotA_laccase/Copper_centers/5'>Two copper centers</scene> | #<scene name='CotA_laccase/Copper_centers/5'>Two copper centers</scene> | ||
Revision as of 17:16, 8 October 2010
CotA laccaseCotA laccase
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CotA laccase belong to the multi-copper oxidase family. The multi-copper oxidases constitute a family of enzymes whose principal members are laccase (benzenediol oxygen oxidoreductase, EC 1.10.3.2), ascorbate oxidase (L-ascorbate oxygen oxidoreductase, EC 1.10.3.3) and ceruloplasmin (Fe(II) oxygen oxidoreductase, EC 1.16.3.1). Similar to the other laccases the three dimensional struture of CotA 1w6l comprises three cupredoxin domain and four copper ions organised in #: a mononuclear blue type 1 copper center and
The trinuclear center has two type 3 copper ions, that can be anti-ferromagnetically coupled through an hydroxyl moiety in between them, and one type 2 copper ion.‡ The mononuclear copper is able to accept an electron froma variety of phenolic substrates and then transmits it to the trinuclear centre.