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Literature summary extracted from

  • Sanchez-Ferrer, A.; Bru, R.; Cabanes, J.; Garcia-Carmona, F.
    Characterization of catecholase and cresolase activities of monastrell grape polyphenol oxidase (1988), Phytochemistry, 27, 319-321.
No PubMed abstract available

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
1.14.18.1 0.5
-
 p-Cresol
-
 Vitis vinifera

Organism

EC Number Organism UniProt Comment Textmining
1.14.18.1 Vitis vinifera
-
-
-

Purification (Commentary)

EC Number Purification (Comment) Organism
1.14.18.1 Triton X-100, ammonium sulfate, partial purification Vitis vinifera

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
1.14.18.1 9854
-
-
 Vitis vinifera

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
1.14.18.1 4-methylcatechol + O2
-
 Vitis vinifera 4-methyl-o-benzoquinone + H2O
-
 ?
1.14.18.1 p-cresol + O2
-
 Vitis vinifera 4-methylpyrocatechol + H2O
-
 ?

Temperature Optimum [°C]

EC Number Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
1.14.18.1 25 40 catecholase activity Vitis vinifera
1.14.18.1 40 60 cresolase activity Vitis vinifera

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
1.14.18.1 3.5 5 catecholase activity Vitis vinifera

pH Range

EC Number pH Minimum pH Maximum Comment Organism
1.14.18.1 3.5 6 about 60% of maximal activity at pH 3.0 and pH 6.0. Marked decrease of activity above pH 6.0 Vitis vinifera
1.14.18.1 3.5 7.5 cresolase activity rises in this range without reaching a defined maximum Vitis vinifera