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Beta-Lactam Antibiotics Induce a Lethal Malfunctioning of the Bacterial Cell Wall Synthesis Machinery

Open access
Cho, Hongbaek, Uehara, Tsuyoshi, Bernhardt, Thomas G.·2014·Cell

Abstract

SUMMARY Penicillin and related beta-lactams comprise one of our oldest and most widely used antibiotic therapies. These drugs have long been known to target enzymes called penicillin-binding proteins (PBPs) that build the bacterial cell wall. Investigating the downstream consequences of target inhibition and how they contribute to the lethal action of these important drugs, we demonstrate that beta-lactams do more than just inhibit the PBPs as is commonly believed. Rather, they induce a toxic malfunctioning of their target biosynthetic machinery involving a futile cycle of cell wall synthesis and degradation, thereby depleting cellular resources and bolstering their killing activity. Characterization of this mode of action additionally revealed a quality-control function for enzymes that cleave bonds in the cell wall matrix. The results thus provide insight into the mechanism of cell wall assembly and suggest how best to interfere with the process for future antibiotic development.

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Metadata

Authors
Cho, H., Uehara, T., & Bernhardt, T. G.
Venue
Cell
Publisher
Elsevier BV
Published
2014-12
Volume
159
Issue
6
Pages
1300-1311
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2037731504
Cited by
642
References
2
FWCI
18.23
Type
journal article
Language
en
Open access
bronze

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Cho, H., Uehara, T., & Bernhardt, T. G. (2014). Beta-Lactam Antibiotics Induce a Lethal Malfunctioning of the Bacterial Cell Wall Synthesis Machinery. Cell. https://doi.org/10.1016/j.cell.2014.11.017

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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