Odilorhabdins, Antibacterial Agents that Cause Miscoding by Binding at a New Ribosomal Site - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Accéder directement au contenu
Article Dans Une Revue Molecular Cell Année : 2018

Odilorhabdins, Antibacterial Agents that Cause Miscoding by Binding at a New Ribosomal Site

Lucile Pantel
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Emilie Racine
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Matthieu Sarciaux
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Marine Serri
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Jessica Houard
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André Aumelas
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Maxime Gualtieri
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Résumé

Growing resistance of pathogenic bacteria and shortage of antibiotic discovery platforms challenge the use of antibiotics in the clinic. This threat calls for exploration of unconventional sources of antibiotics and identification of inhibitors able to eradicate resistant bacteria. Here we describe a different class of antibiotics, odilorhabdins (ODLs), produced by the enzymes of the non-ribosomal peptide synthetase gene cluster of the nematode-symbiotic bacterium Xenorhabdus nematophila. ODLs show activity against Gram-positive and Gram-negative pathogens, including carbapenem-resistant Enterobacteriaceae, and can eradicate infections in animal models. We demonstrate that the bactericidal ODLs interfere with protein synthesis. Genetic and structural analyses reveal that ODLs bind to the small ribosomal subunit at a site not exploited by current antibiotics. ODLs induce miscoding and promote hungry codon readthrough, amino acid misincorporation, and premature stop codon bypass. We propose that ODLs' miscoding activity reflects their ability to increase the affinity of non-cognate aminoacyl-tRNAs to the ribosome.

Domaines

Chimie organique

Dates et versions

hal-01761351 , version 1 (09-04-2018)

Identifiants

Citer

Lucile Pantel, Tanja Florin, Malgorzata Dobosz-Bartoszek, Emilie Racine, Matthieu Sarciaux, et al.. Odilorhabdins, Antibacterial Agents that Cause Miscoding by Binding at a New Ribosomal Site. Molecular Cell, 2018, 70 (1), pp.83 - 94. ⟨10.1016/j.molcel.2018.03.001⟩. ⟨hal-01761351⟩
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