Any feedback?
Literature summary extracted from
- Characterization of polyphenol oxidase from Jipicao Yam (2015), J. Food Biochem., 39, 173-178 .
No PubMed abstract available
Inhibitors
| EC Number | Inhibitors | Comment | Organism | Structure |
|---|---|---|---|---|
| 1.14.18.1 | Ba2+ | - |
Dioscorea polystachya |  |
| 1.14.18.1 | Ca2+ | - |
Dioscorea polystachya | |
| 1.14.18.1 | Citric acid | - |
Dioscorea polystachya | |
| 1.14.18.1 | Cu2+ | slight inhibition at 1 mM | Dioscorea polystachya | |
| 1.14.18.1 | EDTA | - |
Dioscorea polystachya | |
| 1.14.18.1 | K+ | - |
Dioscorea polystachya | |
| 1.14.18.1 | L-cysteine | strong inhibitor | Dioscorea polystachya | |
| 1.14.18.1 | Mn2+ | - |
Dioscorea polystachya | |
| 1.14.18.1 | Na+ | - |
Dioscorea polystachya | |
| 1.14.18.1 | NaHSO3 | strong inhibitor | Dioscorea polystachya | |
| 1.14.18.1 | oxalic acid | - |
Dioscorea polystachya | |
| 1.14.18.1 | phytic acid | - |
Dioscorea polystachya | |
| 1.14.18.1 | Zn2+ | - |
Dioscorea polystachya | |
KM Value [mM]
| EC Number | KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
|---|---|---|---|---|---|---|
| 1.14.18.1 | additional information | - |
additional information | enzyme kinetics | Dioscorea polystachya | |
| 1.14.18.1 | 1.5 | - |
chlorogenic acid | pH 6.8, 30°C | Dioscorea polystachya | |
| 1.14.18.1 | 4.6 | - |
Coke gallic acid | pH 6.8, 30°C | Dioscorea polystachya | |
| 1.14.18.1 | 6.8 | - |
gallic acid | pH 6.8, 30°C | Dioscorea polystachya | |
| 1.14.18.1 | 18 | - |
catechol | pH 6.8, 30°C | Dioscorea polystachya | |
| 1.14.18.1 | 25.6 | - |
guaiacolum | pH 6.8, 30°C | Dioscorea polystachya | |
Metals/Ions
| EC Number | Metals/Ions | Comment | Organism | Structure |
|---|---|---|---|---|
| 1.14.18.1 | Cu2+ | a copper-containing enzyme | Dioscorea polystachya | |
| 1.14.18.1 | Fe3+ | activates | Dioscorea polystachya | |
| 1.14.18.1 | Mg2+ | activates | Dioscorea polystachya | |
Natural Substrates/ Products (Substrates)
| EC Number | Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
|---|---|---|---|---|---|---|---|
| 1.14.18.1 | 2 L-dopa + O2 | Dioscorea polystachya | - |
2 dopaquinone + 2 H2O | - |
? | |
| 1.14.18.1 | L-tyrosine + O2 | Dioscorea polystachya | - |
dopaquinone + H2O | - |
? | |
| 1.14.18.1 | additional information | Dioscorea polystachya | PPO is an enzyme concerning the o-hydroxylation of monophenols to o-diphenols acting as cresolase, EC 1.14.18.1, and the oxidation of o-diphenols to o-quinones acting as catecholase, EC 1.10.3.1 | ? | - |
? | |
Organism
| EC Number | Organism | UniProt | Comment | Textmining |
|---|---|---|---|---|
| 1.14.18.1 | Dioscorea polystachya | - |
Jipicao yam grown in China | - |
Source Tissue
| EC Number | Source Tissue | Comment | Organism | Textmining |
|---|---|---|---|---|
| 1.14.18.1 | tuber | - |
Dioscorea polystachya | - |
Substrates and Products (Substrate)
| EC Number | Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|---|
| 1.14.18.1 | 2 catechol + O2 | - |
Dioscorea polystachya | 2 1,2-benzoquinone + 2 H2O | - |
? | |
| 1.14.18.1 | 2 L-dopa + O2 | - |
Dioscorea polystachya | 2 dopaquinone + 2 H2O | - |
? | |
| 1.14.18.1 | chlorogenic acid + O2 | - |
Dioscorea polystachya | ? | - |
? | |
| 1.14.18.1 | Coke gallic acid + O2 | - |
Dioscorea polystachya | ? | - |
? | |
| 1.14.18.1 | gallic acid + O2 | - |
Dioscorea polystachya | ? | - |
? | |
| 1.14.18.1 | guaiacolum + O2 | - |
Dioscorea polystachya | ? | - |
? | |
| 1.14.18.1 | L-tyrosine + O2 | - |
Dioscorea polystachya | dopaquinone + H2O | - |
? | |
| 1.14.18.1 | additional information | PPO is an enzyme concerning the o-hydroxylation of monophenols to o-diphenols acting as cresolase, EC 1.14.18.1, and the oxidation of o-diphenols to o-quinones acting as catecholase, EC 1.10.3.1 | Dioscorea polystachya | ? | - |
? | |
| 1.14.18.1 | additional information | no activity with p-hydroxyphenylalanine | Dioscorea polystachya | ? | - |
? | |
Synonyms
| EC Number | Synonyms | Comment | Organism |
|---|---|---|---|
| 1.14.18.1 | polyphenol oxidase | - |
Dioscorea polystachya |
| 1.14.18.1 | PPO | - |
Dioscorea polystachya |
Temperature Optimum [°C]
| EC Number | Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
|---|---|---|---|---|
| 1.14.18.1 | 30 | - |
- |
Dioscorea polystachya |
Temperature Range [°C]
| EC Number | Temperature Minimum [°C] | Temperature Maximum [°C] | Comment | Organism |
|---|---|---|---|---|
| 1.14.18.1 | 20 | 65 | activity range, profile overview | Dioscorea polystachya |
Temperature Stability [°C]
| EC Number | Temperature Stability Minimum [°C] | Temperature Stability Maximum [°C] | Comment | Organism |
|---|---|---|---|---|
| 1.14.18.1 | 60 | - |
purified enzyme, stable up to | Dioscorea polystachya |
| 1.14.18.1 | 60 | 70 | purified enzyme, 4 min, loss of 60% activity | Dioscorea polystachya |
| 1.14.18.1 | 80 | - |
purified enzyme, 2 min, loss of 90.5% activity | Dioscorea polystachya |
| 1.14.18.1 | 90 | 100 | purified enzyme, 1 min, inactivation | Dioscorea polystachya |
pH Optimum
| EC Number | pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
|---|---|---|---|---|
| 1.14.18.1 | 6.8 | - |
- |
Dioscorea polystachya |
pH Range
| EC Number | pH Minimum | pH Maximum | Comment | Organism |
|---|---|---|---|---|
| 1.14.18.1 | 4 | 9 | activity range, profile overview | Dioscorea polystachya |
Use of this online version of BRENDA is free under the CC BY 4.0 license. See terms of use for full details.
Release 2023.1 (January 2023)
Legal
Curated at
Member of
