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Literature summary for 1.10.3.1 extracted from

  • Gandia-Herrero, F.; Escribano, J.; Garcia-Carmona, F.
    Characterization of the activity of tyrosinase on betanidin (2007), J. Agric. Food Chem., 55, 1546-1551.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
ascorbic acid endogenous ascorbic acid prevents betanidin oxidation, the effect of ascorbic acid on the tyrosinase-mediated catalysis is the reduction of the o-quinone product of the enzymatic reaction back to the corresponding o-diphenol with the concomitant oxidation of ascorbic acid to dehydroascorbic acid Agaricus bisporus

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
additional information
-
additional information betanidin degradation steady-state kinetics Agaricus bisporus
0.66
-
betanidin pH 6.0 Agaricus bisporus

Metals/Ions

Metals/Ions Comment Organism Structure
Cu2+ copper-containing enzyme Agaricus bisporus

Organism

Organism UniProt Comment Textmining
Agaricus bisporus
-
-
-

Source Tissue

Source Tissue Comment Organism Textmining
commercial preparation
-
Agaricus bisporus
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
betanidin + O2 the structural unit of the violet betacyanins from Lampranthus productus flowers, the reacion is reversible by ascorbic acid addition at pH 5.0 and 4°C Agaricus bisporus betanidin-quinone + H2O
-
?
additional information betanidin is a labile compound, overview Agaricus bisporus ?
-
?

Synonyms

Synonyms Comment Organism
diphenolase
-
Agaricus bisporus
monophenol, o-diphenol: oxygen oxidoreductase
-
Agaricus bisporus
More cf. EC 1.14.18.1 Agaricus bisporus
polyphenol oxidase
-
Agaricus bisporus
tyrosinase
-
Agaricus bisporus

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
25
-
assay at Agaricus bisporus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
5
-
assay at Agaricus bisporus