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Inhibitory Activity of Bioactive Phloroglucinols from the Rhizomes of Dryopteris Crassirhizoma on Escherichia Coli β-Glucuronidase: Kinetic Analysis and Molecular Docking Studies

Overview
Journal Metabolites
Publisher MDPI
Date 2022 Oct 27
PMID 36295840
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Abstract

Phloroglucinols-one of the major secondary metabolites in -exhibit various pharmacological effects, such as antiviral, antioxidant, and antidiabetic activities. This study evaluated 30 phloroglucinols isolated from the rhizomes of for their inhibitory activity on -glucuronidase via in vitro assays. Among them, dimeric phloroglucinols - moderately inhibited -glucuronidase, and trimeric phloroglucinols - showed strong inhibitory effects, with IC values ranging from 5.6 to 8.0 μM. Enzyme kinetic analysis confirmed all six active compounds to be in a competitive mode of inhibition. Molecular docking simulations revealed the key binding interactions with the active site of -glucuronidase protein and the binding mechanisms of these active metabolites. Our results suggest that the rhizomes of and trimeric compounds - may serve as potential candidates for discovering and developing new -glucuronidase inhibitors.

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