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Updated: Dec 13, 2025

The Use of a β-lactamase-based Conductimetric Biosensor Assay to Detect Biomolecular Interactions
Published on: February 1, 2018
Structure-based design of covalent inhibitors targeting metallo-β-lactamases
1Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, 1 Xuefu Avenue, Xi'an, 710127, PR China.
Abstract:
The emergence and prevalence of metallo-β-lactamases (MβLs)-mediated bacterial resistance has seriously threatened the global health today. MβLs are deemed to be one of the most worrying bacterial resistance factors that hydrolyze nearly all β-lactam antibiotics. However, none of MβL inhibitors have appeared in clinic to date. This review surveys the common covalent targets in B1 and B2 MβLs, summarizes all covalent inhibitors of MβLs and their inhibition modes as of 2020, highlights the importance of the rational design of covalent MβL inhibitor guided by the crystal structure and the development of dual-action covalent MβL/SβL inhibitors based on lysine residue of MβLs and serine residue of SβLs, and describes the approaches to discern the covalent inhibition mechanism to guide the development of future therapeutics.
Insights
Metallo-β-lactamases (MβLs) confer bacterial resistance to antibiotics. This review details covalent inhibitors and design strategies for developing new therapeutics against these dangerous enzymes.
Area of Science:
- Microbiology
- Medicinal Chemistry
- Drug Discovery
Background:
- Metallo-β-lactamases (MβLs) are a significant threat to global health, mediating bacterial resistance to nearly all β-lactam antibiotics.
- Despite their clinical importance, no MβL inhibitors are currently available in clinics.
Purpose of the Study:
- To review common covalent targets in B1 and B2 MβLs.
- To summarize covalent inhibitors and their inhibition modes as of 2020.
- To highlight rational design strategies for MβL inhibitors and dual-action MβL/serine β-lactamase (SβL) inhibitors.
Main Methods:
- Literature review of MβL inhibitors and their mechanisms.
- Analysis of crystal structures for rational inhibitor design.
- Exploration of dual-action inhibitor development targeting MβL lysine and SβL serine residues.
Main Results:
- Identification of common covalent targets in MβLs.
- Compilation of known covalent MβL inhibitors and their inhibition modes up to 2020.
- Demonstration of rational design principles and dual-action inhibitor potential.
Conclusions:
- Covalent inhibition offers a promising strategy against MβLs.
- Structure-guided design and dual-action inhibitors are key for future therapeutic development.
- Understanding covalent inhibition mechanisms is crucial for advancing MβL-targeted therapies.
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