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Literature summary extracted from

  • Teng, J.; Gong, Z.; Deng, Y.; Chen, L.; Li, Q.; Shao, Y.; Lin, L.; Xiao, W.
    Purification, characterization and enzymatic synthesis of theaflavins of polyphenol oxidase isozymes from tea leaf (Camellia sinensis) (2017), LWT-Food Sci. Technol., 84, 263-270 .
No PubMed abstract available

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
1.14.18.1 2 3 catechol pH 5.6, 37°C Camellia sinensis
1.14.18.1 5.8
-
pyrogallate pH 5.6, 37°C Camellia sinensis
1.14.18.1 6.9
-
epigallocatechin gallate pH 5.6, 37°C Camellia sinensis
1.14.18.1 8
-
pyrogallate pH 5.6, 37°C Camellia sinensis
1.14.18.1 16
-
catechol pH 5.6, 37°C Camellia sinensis
1.14.18.1 21
-
epigallocatechin pH 5.6, 37°C Camellia sinensis
1.14.18.1 28
-
epigallocatechin pH 5.6, 37°C Camellia sinensis
1.14.18.1 32
-
epigallocatechin gallate pH 5.6, 37°C Camellia sinensis
1.14.18.1 38
-
guaiacol pH 5.6, 37°C Camellia sinensis
1.14.18.1 90
-
L-tyrosine pH 5.6, 37°C Camellia sinensis
1.14.18.1 145
-
L-tyrosine pH 5.6, 37°C Camellia sinensis

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
1.14.18.1 2 catechol + O2 Camellia sinensis
-
2 1,2-benzoquinone + 2 H2O
-
?
1.14.18.1 epigallocatechin + O2 Camellia sinensis
-
? + 2 H2O
-
?
1.14.18.1 epigallocatechin gallate + O2 Camellia sinensis
-
? + 2 H2O
-
?
1.14.18.1 guaiacol + O2 Camellia sinensis
-
?
-
?
1.14.18.1 L-tyrosine + O2 Camellia sinensis
-
dopaquinone + H2O
-
?
1.14.18.1 additional information Camellia sinensis synthesis of theaflavins of polyphenol oxidase isozymes from tea leaves ?
-
?
1.14.18.1 pyrogallate + O2 Camellia sinensis
-
?
-
?

Organism

EC Number Organism UniProt Comment Textmining
1.14.18.1 Camellia sinensis C0L3S4
-
-
1.14.18.1 Camellia sinensis Q68NI4
-
-

Purification (Commentary)

EC Number Purification (Comment) Organism
1.14.18.1 native enzyme from leaves by ultrafiltration, gel filtration, and twofold anion exchange chromatography Camellia sinensis

Source Tissue

EC Number Source Tissue Comment Organism Textmining
1.14.18.1 leaf
-
Camellia sinensis
-

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
1.14.18.1 2 catechol + O2
-
Camellia sinensis 2 1,2-benzoquinone + 2 H2O
-
?
1.14.18.1 epigallocatechin + O2
-
Camellia sinensis ? + 2 H2O
-
?
1.14.18.1 epigallocatechin gallate + O2
-
Camellia sinensis ? + 2 H2O
-
?
1.14.18.1 guaiacol + O2
-
Camellia sinensis ?
-
?
1.14.18.1 L-tyrosine + O2
-
Camellia sinensis dopaquinone + H2O
-
?
1.14.18.1 additional information synthesis of theaflavins of polyphenol oxidase isozymes from tea leaves Camellia sinensis ?
-
?
1.14.18.1 additional information no activity with guaiacol. Synthesis of theaflavin an theaflavin gallates from different substrate by polyphenol oxidase, overview Camellia sinensis ?
-
?
1.14.18.1 additional information synthesis of theaflavin an theaflavin gallates from different substrate by polyphenol oxidase, overview Camellia sinensis ?
-
?
1.14.18.1 pyrogallate + O2
-
Camellia sinensis ?
-
?
1.14.18.1 pyrogallol + O2
-
Camellia sinensis ?
-
?

Synonyms

EC Number Synonyms Comment Organism
1.14.18.1 polyphenol oxidase
-
Camellia sinensis
1.14.18.1 PPO1
-
Camellia sinensis
1.14.18.1 PPO2
-
Camellia sinensis

Temperature Optimum [°C]

EC Number Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
1.14.18.1 37
-
assay at Camellia sinensis

Temperature Stability [°C]

EC Number Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
1.14.18.1 70
-
purified isozyme PPO1, 5 min, 40% activity remaining Camellia sinensis
1.14.18.1 70
-
purified isozyme PPO1, 5 min, 75% activity remaining Camellia sinensis
1.14.18.1 80
-
purified isozyme PPO1, 5 min, 15% activity remaining Camellia sinensis
1.14.18.1 80
-
purified isozyme PPO1, 5 min, inactivation Camellia sinensis
1.14.18.1 90
-
purified isozyme PPO1, 3 min, inactivation Camellia sinensis
1.14.18.1 90
-
purified isozyme PPO1, 5 min, inactivation Camellia sinensis

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
1.14.18.1 5.6
-
assay at Camellia sinensis