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Literature summary for 1.14.18.1 extracted from
- Properties of polyphenol oxidase from tubers of the yam Dioscora bulbifera (1982), Phytochemistry, 21, 1889-1893.
No PubMed abstract available
Inhibitors
| Inhibitors | Comment | Organism | Structure |
|---|---|---|---|
| 4-nitrophenol | competitive to catechol | Dioscorea bulbifera |  |
| 5-methyl-1,3-benzenediol | competitive to catechol | Dioscorea bulbifera | |
| azide | - |
Dioscorea bulbifera | |
| Cinnamic acid | - |
Dioscorea bulbifera | |
| CN- | - |
Dioscorea bulbifera | |
| diethyldithiocarbamate | - |
Dioscorea bulbifera | |
| KCN | - |
Dioscorea bulbifera | |
| L-phenylalanine | - |
Dioscorea bulbifera | |
| NaN3 | - |
Dioscorea bulbifera | |
| o-Nitrophenol | competitive to catechol | Dioscorea bulbifera | |
| p-Cresol | competitive to catechol | Dioscorea bulbifera | |
| Quinoline | - |
Dioscorea bulbifera | |
| resorcine | competitive to catechol | Dioscorea bulbifera | |
| Thiourea | - |
Dioscorea bulbifera | |
Molecular Weight [Da]
| Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
|---|---|---|---|
| 31000 | - |
4 * 31000, SDS-PAGE | Dioscorea bulbifera |
| 115000 | - |
gel filtration | Dioscorea bulbifera |
Organism
| Organism | UniProt | Comment | Textmining |
|---|---|---|---|
| Dioscorea bulbifera | - |
yam tubers | - |
Source Tissue
| Source Tissue | Comment | Organism | Textmining |
|---|---|---|---|
| tuber | - |
Dioscorea bulbifera | - |
Substrates and Products (Substrate)
| Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| catechol + 1/2 O2 | - |
Dioscorea bulbifera | 1,2-benzoquinone + H2O | - |
? | |
| pyrogallol + O2 | - |
Dioscorea bulbifera | ? | - |
? | |
Subunits
| Subunits | Comment | Organism |
|---|---|---|
| tetramer | 4 * 31000, SDS-PAGE | Dioscorea bulbifera |
Ki Value [mM]
| Ki Value [mM] | Ki Value maximum [mM] | Inhibitor | Comment | Organism | Structure |
|---|---|---|---|---|---|
| 0.04 | - |
diethyldithiocarbamate | noncompetitive vs. catechol | Dioscorea bulbifera | |
| 0.07 | - |
Thiourea | mixed inhibition vs. catechol | Dioscorea bulbifera | |
| 0.08 | - |
diethyldithiocarbamate | noncompetitive vs. pyrogallol | Dioscorea bulbifera | |
| 0.16 | - |
KCN | noncompetitive vs. catechol | Dioscorea bulbifera | |
| 0.17 | - |
p-nitrophenol | competitive vs. catechol | Dioscorea bulbifera | |
| 0.2 | - |
KCN | noncompetitive vs. pyrogallol | Dioscorea bulbifera | |
| 0.25 | - |
p-nitrophenol | competitive vs. pyrogallol | Dioscorea bulbifera | |
| 0.5 | - |
Thiourea | noncompetitive vs. pyrogallol | Dioscorea bulbifera | |
| 0.88 | - |
p-Cresol | competitive vs. catechol | Dioscorea bulbifera | |
| 0.9 | - |
p-Cresol | uncompetitive vs. pyrogallol | Dioscorea bulbifera | |
| 0.97 | - |
orcinol | competitive vs. pyrogallol | Dioscorea bulbifera | |
| 1.25 | - |
NaN3 | noncompetitive vs. catechol | Dioscorea bulbifera | |
| 1.4 | - |
Cinnamic acid | noncompetitive vs. pyrogallol | Dioscorea bulbifera | |
| 1.43 | - |
orcinol | mixed inhibition vs. catechol | Dioscorea bulbifera | |
| 1.8 | - |
NaN3 | noncompetitive vs. pyrogallol | Dioscorea bulbifera | |
| 2 | - |
Cinnamic acid | noncompetitive vs. catechol | Dioscorea bulbifera | |
| 4.25 | - |
Quinoline | competitive vs. catechol | Dioscorea bulbifera | |
| 4.33 | - |
L-phenylalanine | noncompetitive vs. catechol | Dioscorea bulbifera | |
| 4.7 | - |
Quinoline | noncompetitive vs. pyrogallol | Dioscorea bulbifera | |
| 6.4 | - |
resorcinol | noncompetitive vs. pyrogallol | Dioscorea bulbifera | |
| 7.9 | - |
resorcinol | competitive vs. catechol | Dioscorea bulbifera | |
| 28.6 | - |
L-phenylalanine | uncompetitive vs. pyrogallol | Dioscorea bulbifera | |
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