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Literature summary extracted from

  • Anosike, E.O.; Ayaebene, A.O.
    Properties of polyphenol oxidase from tubers of the yam Dioscora bulbifera (1982), Phytochemistry, 21, 1889-1893.
No PubMed abstract available

Inhibitors

EC Number Inhibitors Comment Organism Structure
1.14.18.1 4-nitrophenol competitive to catechol Dioscorea bulbifera
1.14.18.1 5-methyl-1,3-benzenediol competitive to catechol Dioscorea bulbifera
1.14.18.1 azide
-
Dioscorea bulbifera
1.14.18.1 Cinnamic acid
-
Dioscorea bulbifera
1.14.18.1 CN-
-
Dioscorea bulbifera
1.14.18.1 diethyldithiocarbamate
-
Dioscorea bulbifera
1.14.18.1 KCN
-
Dioscorea bulbifera
1.14.18.1 L-phenylalanine
-
Dioscorea bulbifera
1.14.18.1 NaN3
-
Dioscorea bulbifera
1.14.18.1 o-Nitrophenol competitive to catechol Dioscorea bulbifera
1.14.18.1 p-Cresol competitive to catechol Dioscorea bulbifera
1.14.18.1 Quinoline
-
Dioscorea bulbifera
1.14.18.1 resorcine competitive to catechol Dioscorea bulbifera
1.14.18.1 Thiourea
-
Dioscorea bulbifera

Molecular Weight [Da]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
1.14.18.1 31000
-
4 * 31000, SDS-PAGE Dioscorea bulbifera
1.14.18.1 115000
-
gel filtration Dioscorea bulbifera

Organism

EC Number Organism UniProt Comment Textmining
1.14.18.1 Dioscorea bulbifera
-
yam tubers
-

Source Tissue

EC Number Source Tissue Comment Organism Textmining
1.14.18.1 tuber
-
Dioscorea bulbifera
-

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
1.14.18.1 catechol + 1/2 O2
-
Dioscorea bulbifera 1,2-benzoquinone + H2O
-
?
1.14.18.1 pyrogallol + O2
-
Dioscorea bulbifera ?
-
?

Subunits

EC Number Subunits Comment Organism
1.14.18.1 tetramer 4 * 31000, SDS-PAGE Dioscorea bulbifera

Ki Value [mM]

EC Number Ki Value [mM] Ki Value maximum [mM] Inhibitor Comment Organism Structure
1.14.18.1 0.04
-
diethyldithiocarbamate noncompetitive vs. catechol Dioscorea bulbifera
1.14.18.1 0.07
-
Thiourea mixed inhibition vs. catechol Dioscorea bulbifera
1.14.18.1 0.08
-
diethyldithiocarbamate noncompetitive vs. pyrogallol Dioscorea bulbifera
1.14.18.1 0.16
-
KCN noncompetitive vs. catechol Dioscorea bulbifera
1.14.18.1 0.17
-
p-nitrophenol competitive vs. catechol Dioscorea bulbifera
1.14.18.1 0.2
-
KCN noncompetitive vs. pyrogallol Dioscorea bulbifera
1.14.18.1 0.25
-
p-nitrophenol competitive vs. pyrogallol Dioscorea bulbifera
1.14.18.1 0.5
-
Thiourea noncompetitive vs. pyrogallol Dioscorea bulbifera
1.14.18.1 0.88
-
p-Cresol competitive vs. catechol Dioscorea bulbifera
1.14.18.1 0.9
-
p-Cresol uncompetitive vs. pyrogallol Dioscorea bulbifera
1.14.18.1 0.97
-
orcinol competitive vs. pyrogallol Dioscorea bulbifera
1.14.18.1 1.25
-
NaN3 noncompetitive vs. catechol Dioscorea bulbifera
1.14.18.1 1.4
-
Cinnamic acid noncompetitive vs. pyrogallol Dioscorea bulbifera
1.14.18.1 1.43
-
orcinol mixed inhibition vs. catechol Dioscorea bulbifera
1.14.18.1 1.8
-
NaN3 noncompetitive vs. pyrogallol Dioscorea bulbifera
1.14.18.1 2
-
Cinnamic acid noncompetitive vs. catechol Dioscorea bulbifera
1.14.18.1 4.25
-
Quinoline competitive vs. catechol Dioscorea bulbifera
1.14.18.1 4.33
-
L-phenylalanine noncompetitive vs. catechol Dioscorea bulbifera
1.14.18.1 4.7
-
Quinoline noncompetitive vs. pyrogallol Dioscorea bulbifera
1.14.18.1 6.4
-
resorcinol noncompetitive vs. pyrogallol Dioscorea bulbifera
1.14.18.1 7.9
-
resorcinol competitive vs. catechol Dioscorea bulbifera
1.14.18.1 28.6
-
L-phenylalanine uncompetitive vs. pyrogallol Dioscorea bulbifera