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Literature summary extracted from

  • Perez-Gilabert, M.; Garcia Carmona, F.
    Characterization of catecholase and cresolase activities of eggplant polyphenol oxidase (2000), J. Agric. Food Chem., 48, 695-700.
    View publication on PubMed

Inhibitors

EC Number Inhibitors Comment Organism Structure
1.14.18.1 2,4,6-cycloheptatriene-1-one 1 mM, 91% inhibition of catecholase activity Solanum melongena
1.14.18.1 4-hexylresorcinol 1 mM, 65% inhibition of catecholase activity Solanum melongena

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
1.14.18.1 1
-
 4-tert-butylcatechol
-
 Solanum melongena
1.14.18.1 2.7
-
 4-methylcatechol
-
 Solanum melongena

Organism

EC Number Organism UniProt Comment Textmining
1.14.18.1 Solanum melongena
-
-
-

Storage Stability

EC Number Storage Stability Organism
1.14.18.1 -20°C, 50 mM phosphate buffer, pH 7.0, more than 3 months, no loss of activity Solanum melongena

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
1.14.18.1 4-methylcatechol + O2 catecholase/cresolase activity ratio of 41 Solanum melongena 4-methyl-o-benzoquinone + H2O
-
 ?
1.14.18.1 4-tert-butylcatechol + O2
-
 Solanum melongena 4-tert-butyl-o-benzoquinone + H2O
-
 r

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
1.14.18.1 5.5
-
 catecholase activity Solanum melongena
1.14.18.1 7.5
-
 cresolase activity Solanum melongena

pH Range

EC Number pH Minimum pH Maximum Comment Organism
1.14.18.1 4 8 pH 4.0: about 65% of maximal activity, pH 8.0: about 75% of maximal activity, catecholase activity Solanum melongena