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Literature summary for 1.10.3.1 extracted from
- Characterization of polyphenol oxidase from Solanum tuberosum Jasim (2005), Food Sci. Biotechnol., 14, 117-122.
No PubMed abstract available
Inhibitors
| Inhibitors | Comment | Organism | Structure |
|---|---|---|---|
| ascorbic acid | - |
Solanum tuberosum |  |
| Boric acid | - |
Solanum tuberosum | |
| Citric acid | - |
Solanum tuberosum | |
| Cu2+ | - |
Solanum tuberosum | |
| EDTA | - |
Solanum tuberosum | |
| L-cysteine | - |
Solanum tuberosum | |
| Mg2+ | - |
Solanum tuberosum | |
KM Value [mM]
| KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
|---|---|---|---|---|---|
| 21.1 | - |
catechol | pH 6.5, 25°C | Solanum tuberosum | |
Metals/Ions
| Metals/Ions | Comment | Organism | Structure |
|---|---|---|---|
| Fe2+ | activates | Solanum tuberosum | |
| Zn2+ | activates | Solanum tuberosum | |
Molecular Weight [Da]
| Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
|---|---|---|---|
| 40000 | - |
x * 40000, SDS-PAGE | Solanum tuberosum |
Organism
| Organism | UniProt | Comment | Textmining |
|---|---|---|---|
| Solanum tuberosum | - |
var. Jasim, purple-flesh potato | - |
Purification (Commentary)
| Purification (Comment) | Organism |
|---|---|
| native enzyme 78fold to homogeneity | Solanum tuberosum |
Source Tissue
| Source Tissue | Comment | Organism | Textmining |
|---|---|---|---|
| tuber | - |
Solanum tuberosum | - |
Substrates and Products (Substrate)
| Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| catechol + 1/2 O2 | preferred substrate | Solanum tuberosum | 1,2-benzoquinone + H2O | - |
? | |
Subunits
| Subunits | Comment | Organism |
|---|---|---|
| ? | x * 40000, SDS-PAGE | Solanum tuberosum |
Synonyms
| Synonyms | Comment | Organism |
|---|---|---|
| polyphenol oxidase | - |
Solanum tuberosum |
| PPO | - |
Solanum tuberosum |
Temperature Optimum [°C]
| Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
|---|---|---|---|
| 25 | - |
- |
Solanum tuberosum |
Temperature Stability [°C]
| Temperature Stability Minimum [°C] | Temperature Stability Maximum [°C] | Comment | Organism |
|---|---|---|---|
| 10 | 40 | quite stable, purified enzyme | Solanum tuberosum |
| 70 | - |
almost complete inactivation within 30 min, purified enzyme | Solanum tuberosum |
pH Optimum
| pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
|---|---|---|---|
| 6.5 | - |
- |
Solanum tuberosum |
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Release 2023.1 (January 2023)
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