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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 Optimum

pH Optimum on EC 1.10.3.1 - catechol oxidase

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pH OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
3.5 - 4.5
-
dependent on the substrate, overview
4
-
catechol oxidation
4 - 6
-
dependent on conditions, overview
4.5 - 5.8
Mycelia sterilia
-
-
5.3 - 5.7
-
natural mixture of tea leaf catechins as substrate
5.4 - 6.4
dependent on the substrate, overview
5.5 - 7.5
-
soluble enzyme, in absence of SDS. Membrane PPO activity is almost negligible at these pH values
6 - 7
6.5 - 7
7.2
-
isoenzyme C
7.2 - 8
-
dependent on the locality of origin, the growth phase, and the tissue, overview
additional information
-
the enhancement of kcat upon activation is accompanied by a marked shift in the pH optimum from pH 4.5 to pH 6.0 for the oxidation of t-butyl catechol from 4.5 to 6.0, an increased sensitivity to tropolone, altered susceptibility to proteolytic degradation and decreased thermostability, overview