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Literature summary for 3.1.1.20 extracted from

  • Yao, J.; Fan, X.J.; Lu, Y.; Liu, Y.H.
    Isolation and characterization of a novel tannase from a metagenomic library (2011), J. Agric. Food Chem., 59, 3812-3818.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
Urea 106% activity at 1 mM uncultured bacterium

Cloned(Commentary)

Cloned (Comment) Organism
expressed in Escherichia coli BL21(DE3) cells uncultured bacterium

Inhibitors

Inhibitors Comment Organism Structure
Ag+ 51% residual activity at 1 mM uncultured bacterium
Al3+ 97% residual activity at 1 mM uncultured bacterium
beta-mercaptoethanol 63% residual activity at 1 mM uncultured bacterium
Cr2+ 52% residual activity at 1 mM uncultured bacterium
EDTA 86% residual activity at 1 mM uncultured bacterium
Hg2+ complete inhibition at 1 mM uncultured bacterium
Mn2+ 90% residual activity at 1 mM uncultured bacterium
additional information the enzyme is not inhibited by 1-4 M NaCl uncultured bacterium
NaCl the enzyme retains 80% activity at 5 M uncultured bacterium
phenylmethylsulfonyl fluoride 32% residual activity at 1 mM uncultured bacterium
Tween 80 47% residual activity at 1 mM uncultured bacterium

Metals/Ions

Metals/Ions Comment Organism Structure
Ca2+ 126% activity at 1 mM uncultured bacterium
Cd2+ 121% activity at 1 mM uncultured bacterium
Cu2+ 108% activity at 1 mM uncultured bacterium
Mg2+ 120% activity at 1 mM uncultured bacterium
additional information the enzyme is not influenced by Zn2+ and Co2+ uncultured bacterium

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
55000
-
gel filtration uncultured bacterium

Organic Solvent Stability

Organic Solvent Comment Organism
additional information the enzyme is not influenced by Triton X-100 uncultured bacterium

Organism

Organism UniProt Comment Textmining
uncultured bacterium E7D7J5
-
-

Purification (Commentary)

Purification (Comment) Organism
Ni-NTA His Bind column chromatography uncultured bacterium

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
chlorogenic acid + H2O complete hydrolysis within 40 min uncultured bacterium trans-caffeate + quinate
-
?
epicatechin gallate + H2O complete hydrolysis within 40 min uncultured bacterium gallate + epicatechin
-
?
epigallocatechin gallate + H2O complete hydrolysis within 40 min uncultured bacterium gallate + epigallocatechin
-
?
ethyl ferulate + H2O complete hydrolysis within 40 min uncultured bacterium ethanol + ferulate
-
?
propyl gallate + H2O 46% hydrolysis within 40 min uncultured bacterium gallate + propanol
-
?
rosmarinic acid + H2O 88% hydrolysis within 40 min uncultured bacterium (2E)-3,4-dihydroxycinnamate + (2R)-3-(3,4-dihydroxyphenyl)-2-hydroxypropanoate
-
?
tannic acid + H2O complete hydrolysis within 40 min uncultured bacterium gallate + D-glucose
-
?

Subunits

Subunits Comment Organism
monomer 1 * 55000, SDS-PAGE uncultured bacterium

Synonyms

Synonyms Comment Organism
Tan410
-
uncultured bacterium
tannin acyl hydrolase
-
uncultured bacterium

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
30
-
-
uncultured bacterium

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
40 50 the enzyme is stable below 40°C, as after prolonged incubation time it does not show obvious loss of activity under the standard conditions. However, the enzyme keeps only 47% of its activity after incubation at 50°C for 12 h uncultured bacterium

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6.4
-
-
uncultured bacterium

pH Stability

pH Stability pH Stability Maximum Comment Organism
6 7
-
uncultured bacterium