KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
2 | 3 | catechol | pH 5.6, 37°C | Camellia sinensis | |
5.8 | - |
pyrogallate | pH 5.6, 37°C | Camellia sinensis | |
6.9 | - |
epigallocatechin gallate | pH 5.6, 37°C | Camellia sinensis | |
8 | - |
pyrogallate | pH 5.6, 37°C | Camellia sinensis | |
16 | - |
catechol | pH 5.6, 37°C | Camellia sinensis | |
21 | - |
epigallocatechin | pH 5.6, 37°C | Camellia sinensis | |
28 | - |
epigallocatechin | pH 5.6, 37°C | Camellia sinensis | |
32 | - |
epigallocatechin gallate | pH 5.6, 37°C | Camellia sinensis | |
38 | - |
guaiacol | pH 5.6, 37°C | Camellia sinensis | |
90 | - |
L-tyrosine | pH 5.6, 37°C | Camellia sinensis | |
145 | - |
L-tyrosine | pH 5.6, 37°C | Camellia sinensis |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
2 catechol + O2 | Camellia sinensis | - |
2 1,2-benzoquinone + 2 H2O | - |
? | |
epigallocatechin + O2 | Camellia sinensis | - |
? + 2 H2O | - |
? | |
epigallocatechin gallate + O2 | Camellia sinensis | - |
? + 2 H2O | - |
? | |
guaiacol + O2 | Camellia sinensis | - |
? | - |
? | |
L-tyrosine + O2 | Camellia sinensis | - |
dopaquinone + H2O | - |
? | |
additional information | Camellia sinensis | synthesis of theaflavins of polyphenol oxidase isozymes from tea leaves | ? | - |
? | |
pyrogallate + O2 | Camellia sinensis | - |
? | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Camellia sinensis | C0L3S4 | - |
- |
Camellia sinensis | Q68NI4 | - |
- |
Purification (Comment) | Organism |
---|---|
native enzyme from leaves by ultrafiltration, gel filtration, and twofold anion exchange chromatography | Camellia sinensis |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
leaf | - |
Camellia sinensis | - |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
2 catechol + O2 | - |
Camellia sinensis | 2 1,2-benzoquinone + 2 H2O | - |
? | |
epigallocatechin + O2 | - |
Camellia sinensis | ? + 2 H2O | - |
? | |
epigallocatechin gallate + O2 | - |
Camellia sinensis | ? + 2 H2O | - |
? | |
guaiacol + O2 | - |
Camellia sinensis | ? | - |
? | |
L-tyrosine + O2 | - |
Camellia sinensis | dopaquinone + H2O | - |
? | |
additional information | synthesis of theaflavins of polyphenol oxidase isozymes from tea leaves | Camellia sinensis | ? | - |
? | |
additional information | no activity with guaiacol. Synthesis of theaflavin an theaflavin gallates from different substrate by polyphenol oxidase, overview | Camellia sinensis | ? | - |
? | |
additional information | synthesis of theaflavin an theaflavin gallates from different substrate by polyphenol oxidase, overview | Camellia sinensis | ? | - |
? | |
pyrogallate + O2 | - |
Camellia sinensis | ? | - |
? | |
pyrogallol + O2 | - |
Camellia sinensis | ? | - |
? |
Synonyms | Comment | Organism |
---|---|---|
polyphenol oxidase | - |
Camellia sinensis |
PPO1 | - |
Camellia sinensis |
PPO2 | - |
Camellia sinensis |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
37 | - |
assay at | Camellia sinensis |
Temperature Stability Minimum [°C] | Temperature Stability Maximum [°C] | Comment | Organism |
---|---|---|---|
70 | - |
purified isozyme PPO1, 5 min, 40% activity remaining | Camellia sinensis |
70 | - |
purified isozyme PPO1, 5 min, 75% activity remaining | Camellia sinensis |
80 | - |
purified isozyme PPO1, 5 min, 15% activity remaining | Camellia sinensis |
80 | - |
purified isozyme PPO1, 5 min, inactivation | Camellia sinensis |
90 | - |
purified isozyme PPO1, 3 min, inactivation | Camellia sinensis |
90 | - |
purified isozyme PPO1, 5 min, inactivation | Camellia sinensis |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
5.6 | - |
assay at | Camellia sinensis |