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EC Tree
IUBMB Comments beta-Glucogallin can act as donor and as acceptor. Digalloylglucose can also act as acceptor, with the formation of 1-O,2-O,6-O-trigalloylglucose
The expected taxonomic range for this enzyme is: Quercus robur
Synonyms
galloyltransferase,
more
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beta-glucogallin (beta-glucogallin donor) galloyltransferase
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galloyltransferase
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2 1-O-galloyl-beta-D-glucose = D-glucose + 1-O,6-O-digalloyl-beta-D-glucose
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Acyl group transfer
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1-O-galloyl-beta-D-glucose:1-O-galloyl-beta-D-glucose O-galloyltransferase
beta-Glucogallin can act as donor and as acceptor. Digalloylglucose can also act as acceptor, with the formation of 1-O,2-O,6-O-trigalloylglucose
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1-O-4-hydroxybenzoyl-beta-D-glucose + 1-O-4-hydroxybenzoyl-beta-D-glucose
1,2-di-O-benzoyl-beta-D-glucose + D-glucose
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?
1-O-galloyl-beta-D-glucose + 1,6-di-O-galloyl-beta-D-glucose
1,2,6-tri-O-galloyl-beta-D-glucose + D-glucose
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1-O-galloyl-beta-D-glucose + 1-O-galloyl-beta-D-glucose
1,6-di-O-galloyl-beta-D-glucose + D-glucose
1-O-protocatechuoyl-beta-D-glucose + 1-O-protocatechuoyl-beta-D-glucose
1,6-di-O-protocatechuoyl-beta-D-glucose + D-glucose
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1-O-veratroyl-beta-D-glucose + 1-O-veratroyl-beta-D-glucose
1,2-di-O-veratroyl-beta-D-glucose + D-glucose
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1-O-galloyl-beta-D-glucose + 1-O-galloyl-beta-D-glucose
1,6-di-O-galloyl-beta-D-glucose + D-glucose
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1-O-galloyl-beta-D-glucose + 1-O-galloyl-beta-D-glucose
1,6-di-O-galloyl-beta-D-glucose + D-glucose
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1-O-galloyl-beta-D-glucose + 1-O-galloyl-beta-D-glucose
1,6-di-O-galloyl-beta-D-glucose + D-glucose
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no reaction with 1-O-syringoylglucose
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1-O-galloyl-beta-D-glucose + 1-O-galloyl-beta-D-glucose
1,6-di-O-galloyl-beta-D-glucose + D-glucose
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no reaction with galloyl-CoA
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1-O-galloyl-beta-D-glucose + 1-O-galloyl-beta-D-glucose
1,6-di-O-galloyl-beta-D-glucose + D-glucose
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first intermediate in the gallotannin biosynthesis in higher plants, serving as acyl donor and acceptor
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1-O-galloyl-beta-D-glucose + 1-O-galloyl-beta-D-glucose
1,6-di-O-galloyl-beta-D-glucose + D-glucose
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first intermediate in the gallotannin biosynthesis in higher plants, serving as acyl donor and acceptor
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1-O-galloyl-beta-D-glucose + 1-O-galloyl-beta-D-glucose
1,6-di-O-galloyl-beta-D-glucose + D-glucose
1-O-galloyl-beta-D-glucose + 1-O-galloyl-beta-D-glucose
1,6-di-O-galloyl-beta-D-glucose + D-glucose
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1-O-galloyl-beta-D-glucose + 1-O-galloyl-beta-D-glucose
1,6-di-O-galloyl-beta-D-glucose + D-glucose
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first intermediate in the gallotannin biosynthesis in higher plants, serving as acyl donor and acceptor
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?
1-O-galloyl-beta-D-glucose + 1-O-galloyl-beta-D-glucose
1,6-di-O-galloyl-beta-D-glucose + D-glucose
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first intermediate in the gallotannin biosynthesis in higher plants, serving as acyl donor and acceptor
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additional information
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no cofactor requirement
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additional information
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no metal ion requirement
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2-mercaptoethanol
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above 50 mM
dithioerythritol
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above 20 mM
additional information
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no inhibition by metal ions
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2.5
1-O-4-Hydroxybenzoyl-beta-D-glucose
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66.7
1-O-Galloyl-beta-D-glucose
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44.4
1-O-Protocatechuoyl-beta-D-glucose
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50
1-O-Veratroyl-beta-D-glucose
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additional information
additional information
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additional information
additional information
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the activity of the enzyme is 58% for 1-O-protocatechouylglucose, 8% for 1-O-p-hydroxybenzoylglucose and 7% for 1-O-veratroylglucose relative to galloylglucose
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additional information
additional information
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normal Michaelis-Menten kinetics
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additional information
additional information
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substrate saturation not reached at 20 mM
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additional information
additional information
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substrate saturation at 10 mM
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4.2 - 8
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no activity below pH 4.2 and above pH 8.0
5 - 7.2
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about half-maximal activity at pH 5.0 and pH 7.2
5.5 - 7.5
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about half-maximal activity at pH 5.5 and pH 7.5
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additional information
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25% residual activity at 0°C
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oak
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brenda
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2-3 months old
brenda
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4.5 - 6.5
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highest stability at 30°C
487707
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30
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highest stability at pH 4.5-6.5
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glycerol, 10%, stabilizes
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-20°C, stable in the presence of 10% glycerol
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2-4°C, t1/2: 2 days, dilute preparation
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2-4°C, t1/2: 7 days, concentrated preparation
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partial purification with ammonium sulfate precipitation, DEAE-cellulose chromatography and gel filtration
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Gross, G.G.; Denzel, K.; Schilling, G.
Enzymic synthesis of di-O-phenylcarboxyl-beta-D-glucose esters by an acyltransferase from oak leaves
Z. Naturforsch. C
45
37-41
1990
Quercus robur
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brenda
Gross, G.G.
Synthesis of mono-, di- and trigalloyl-beta-D-glucose by beta-glucogallin-dependent galloyltransferases from oak leaves
Z. Naturforsch. C
38
519-523
1983
Quercus robur
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brenda
Schmidt, S.W.; Denzel, K.; Schilling, G.; Gross, G.G.
Enzymatic synthesis of 1,6-digalloylglucose from beta-glucogallin by beta-glucogallin:beta-glucogallin 6-0-galloyltransferase from oak leaves
Z. Naturforsch. C
42
87-92
1987
Quercus robur
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brenda
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