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1.10.3.1: catechol oxidase

This is an abbreviated version!
For detailed information about catechol oxidase, go to the full flat file.

Word Map on EC 1.10.3.1

Reaction

2 catechol +

O2
= 2 1,2-benzoquinone + 2 H2O

Synonyms

1,2-benzene: oxygen oxidoreductase, 1,2-benzenediol:oxygen oxidoreductase, AoCO4, catalase-phenol oxidase, catechol oxidase, catecholase, catecholoxidase, CATPO, CO, copper-S100B, cresolase, dihydroxy-L-phenylalanine:oxygen oxidoreductase, Diphenol oxidase, diphenolase, dopa oxidase, germin-like protein, GLP, hemocyanin, ibCO, LsPPO, mettyrosinase, monophenol, o-diphenol: oxygen oxidoreductase, monophenol, o-diphenol:oxygen oxidoreductase, More, MppO, o-diphenol oxidoreductase, o-diphenol: dioxygen oxidoreductase, dehydrogenating, o-diphenol:oxygen oxidoreductase, o-diphenolase, o-diphenoloxidase, oxytyrosinase, phenol oxidase, phenolase, phenoloxidase, polyphenol oxidase, polyphenoloxidase, PPO, PPO 1, PPO 2, PPO II, PPO-6, pyrocatechol oxidase, TYR3, tyrosinase

ECTree

     1 Oxidoreductases
         1.10 Acting on diphenols and related substances as donors
             1.10.3 With oxygen as acceptor
                1.10.3.1 catechol oxidase

pH Range

pH Range on EC 1.10.3.1 - catechol oxidase

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pH RANGE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
2.5 - 9
-
-
3 - 5.5
3.5 - 7
-
inactive at pH 3.0 and pH 7.5, half-maximal activity at pH 3.5 and pH 6.2
3.5 - 7.5
-
-
3.6 - 6.5
-
pH profiles with different substrates, overview
4 - 8.5
-
pH optimum is determined over a pH 4.0-8.5 range
4 - 9
4.1 - 4.4
-
74% and 87% of maximal activity
5 - 7.5
Ferula sp.
-
-
6 - 7.5
-
at pH 6.0, isozyme PPO 1 activity increases drastically, reaching maximum activity at pH 7.0 and then again radically decreases at pH 7.5
6 - 9.5
-
highest activity and stability within a neutral and alkaline pH range
additional information