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BRENDA support

Ligand 1,2,3,4,6-pentakis-O-galloyl-beta-D-glucose

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Basic Ligand Information

Molecular Structure
Picture of 1,2,3,4,6-pentakis-O-galloyl-beta-D-glucose (click for magnification)
Molecular Formula
BRENDA Name
InChIKey
Molfile
C41H32O26
1,2,3,4,6-pentakis-O-galloyl-beta-D-glucose
QJYNZEYHSMRWBK-NIKIMHBISA-N
Synonyms:
1,2,3,4,6-penta-O-galloyl-beta-D-glucose, 1,2,3,4,6-pentagalloyl-beta-D-glucose, 1,2,3,4,6-pentagalloyl glucopyranoside, 1,2,3,4,6-pentagalloyl glucose, 1,2,3,4,6-pentagalloylglucose, 1,2,3,4,6-pentakis-O-(3,4,5-trihydroxybenzoyl)-beta-D-glucopyranose, 1,2,3,4,6-pentakis-O-galloyl-beta-D-glucoside, pentagalloyl glucose, Pentagalloylglucose

Related pathways

Pathway Source
Pathways
MetaCyc
cornusiin E biosynthesis, gallotannin biosynthesis, pentagalloylglucose biosynthesis

Roles as Enzyme Ligand

Substrate in Enzyme-catalyzed Reactions (2 results)

EC NUMBER
REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE

Product in Enzyme-catalyzed Reactions (1 result)

EC NUMBER
REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE
1-O-galloyl-beta-D-glucose + 1,2,3,6-tetra-O-galloyl-beta-D-glucose = D-glucose + 1,2,3,4,6-penta-O-galloyl-beta-D-glucose
show the reaction diagram
-

Inhibitor in Enzyme-catalyzed Reactions (14 results)

EC NUMBER
COMMENTARY
LITERATURE
ENZYME 3D STRUCTURE
46.6% inhibition at 0.002 mM
-
IC50: 0.026 mM
-
compound is transported across cancer cell membrane to further down-regulate FAS and activate caspase-3 in MDA-MB-231 cells. Compared with other FAS inhibitors, including catechin gallate and morin, 1,2,3,4,6-penta-O-galloyl-beta-D-glucose involves a higher reversible fast-binding inhibition with an irreversible slow-binding inhibition, i.e. saturation kinetics with a dissociation constant of 0.59 microM and a limiting rate constant of 0.16 per min. The major reacting site of PGG is on the beta-ketoacyl reduction domain of FAS. Compound exhibits different types of inhibitions against the three substrates in the FAS overall reaction
-
35.81% activity remaining
-
mixed non-competitive inhibition, KEI: 0.0026 mM, KEIS: 0.0039 mM, tested in a concentration range of 0.04 to 0.5 mM, reduced inhibitory efficiency of the mutants W58L and Y151M with 92 and 97% remaining enzyme activity at 0.00235 mM inhibitor concentration, respectively, pH 6.0, 37°C
-
about 25% inhibition at 10 microM in vitro
-
remarkable inhibitory activity against SARS-CoV-2 3CLpro. In molecular docking, 1,2,3,4,6-pentagalloylglucose strongly interacts with the substrate binding pocket of SARS-CoV-2 3CLpro, forming hydrogen bonds with catalytic residues C145 and H41
-

Enzyme Kinetic Parameters

KM Value (1 result)

EC NUMBER
KM VALUE [MM]
KM VALUE MAXIMUM [MM]
COMMENTARY
LITERATURE
5.9
-
-

Ki Value (2 results)

EC NUMBER
KI VALUE [MM]
KI VALUE MAXIMUM [MM]
COMMENTARY
LITERATURE
0.00235
-
pH 6.0, 37°C, the mutants Y151M and W58L exhibit reduced inhibitory efficiency with 92 and 97% remaining enzyme activity at 0.00235 mM inhibitor concentration, respectively, pH 6.0, 37°C
0.0000272
-
-

IC50 Value (5 results)

EC NUMBER
IC50 VALUE
IC50 VALUE MAXIMUM
COMMENTARY
LITERATURE
0.026
-
IC50: 0.026 mM
0.0016
-
37°C, pH not specified in the publication
0.00017
-
IC50: 170 nM

References & Links

Links to other databases for 1,2,3,4,6-pentakis-O-galloyl-beta-D-glucose

EXTERNAL LINKS