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3.1.1.20: tannase

This is an abbreviated version!
For detailed information about tannase, go to the full flat file.

Word Map on EC 3.1.1.20

Reaction

digallate
+
H2O
= 2 gallate

Synonyms

An04g04430, AoTanA, AotanB, ATAN1, depsidase, fungal tannase, gallotannin-degrading esterase, GALLO_1609, LP-tan, plant tannase, TAH, TAH I, TAH II, tan A, Tan410, tan7, TanA, TanB, tanBLP, TanLpl, tannase, tannase I, tannase II, tannin acyl hydrolase, tannin acyl-hydrolase, tannin acylhydrolase, tannin-acyl-hydrolase, TanSg1, yeast tannase

ECTree

     3 Hydrolases
         3.1 Acting on ester bonds
             3.1.1 Carboxylic-ester hydrolases
                3.1.1.20 tannase

Temperature Stability

Temperature Stability on EC 3.1.1.20 - tannase

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TEMPERATURE STABILITY
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
0
-
42% of the maximal activity
20 - 30
-
isozymes TAH I and TAH II, stable
20 - 40
-
liquid-surface fermentation of Aspergillus
20 - 50
-
purified enzyme, fully stable
20 - 60
22 - 65
-
the enzyme is quite unstable, losing about 50% of its activity after a 5 min incubation between 22 and 30°C, about 60% at 37°C, and is almost inactive after 5 min at 65°C
22 - 90
-
the enzyme is very stable in the temperature range of 22-50°C for up to 70 h and has a half-life of about 72 h at 90°C
25
-
the enzyme is the most active after incubating at 25°C for 12 h
25 - 45
-
-
25 - 55
25 - 90
-
at 25°C crude and immobilized enzyme show 78% and 81% relative activity while purified tannase has a relative activity of 70% at this temperature, at 80°C more than 50% relative activity is observed in crude and immobilized tannase while 45% in purified form, at 90°C crude and immobilized enzyme retain 23% and 31% relative activity while purified tannase shows a relative activity of only 11%
30 - 45
30 - 50
30 - 60
30 - 70
4 - 45
40 - 50
40 - 60
40 - 70
purified native enzyme, the calculated half-life times at 40, 45, 50, 55, 60, and 70°C are 955.15, 142.0, 30.28, 17.88, 8.23, and 2.95 min, respectively, determination of thermodynamic parameters for irreversible thermal inactivation at 40-70°C
45
-
95% stability up to
45 - 50
-
purified native enzyme, loses 50% activity after 120 min, the half-life is 60 min
45 - 55
the enzyme retains more than 50% activity between 25 and 45°C but the activity drops off markedly above 45°C
45 - 65
-
the protein dramatically loses its activity after 30 min at 65°C. However, the enzyme keeps more than 70% activity after 30 min of incubation at 55°C. The enzyme shows about 50 and 25% of the maximal activity after 6 and 18 h of incubation at 45°C, respectively
50 - 60
Hyalopus sp.
-
60°C: heat stable for 10 min. 50°C: heat stable for 30 min, loses only 4% of its activity even after 60 min
50 - 70
-
half-lives of the enzyme at 50, 60, and 70°C are 281, 25, and 4 min, respectively
55
-
activity completely lost after 20 min
60 - 70
-
solid-state fermentation tannase and submerged fermentation tannase are stable at 60°C for 1 h incubation retaining around 90% of activity. Both purified tannases lose the activity at 80°C, nevertheless, the submerged fermentation tannase only loses 20% of activity at 70°C for 1 h incubation and solid-state fermentation tannase retaining 30% of activity at the same condition
60 - 80
-
the immobilized enzyme has a half life of 24 h at 80°C at pH 5.0 and is stable from 60 to 75°C
70 - 80
85
-
activity completely lost after 10 min
90
-
purified enzyme, inactivation
additional information