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Literature summary for 1.14.18.1 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
Search for more literature for 1.14.18.1

KM Value [mM]

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

Organism

Organism UniProt Comment Textmining
Vitis vinifera
-
-
-

Purification (Commentary)

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

Specific Activity [micromol/min/mg]

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

Substrates and Products (Substrate)

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

Temperature Optimum [°C]

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

pH Optimum

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

pH Range

pH Minimum pH Maximum Comment Organism
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
3.5 7.5 cresolase activity rises in this range without reaching a defined maximum Vitis vinifera