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fosM, a New Family of Fosfomycin Resistance Genes Identified in Bacterial Species Isolated from Human Microbiota.

Sami KhabthaniMouna HamelSophie Alexandra BaronSeydina M DieneJean-Marc RolainVicky Merhej
Published in: Antimicrobial agents and chemotherapy (2021)
Fosfomycin is a decades-old antibiotic, currently reused because of its activity against multidrug-resistant bacteria. Here, we used a combined in vitro/in silico approach to search for fosfomycin resistance determinants in 25 new bacterial species isolated from the human microbiota. Putative resistance genes were cloned into a susceptible Escherichia coli strain. MIC values increased from 1 μg/ml to 1,024 μg/ml. Here, we report a new family of potential chromosomal fosfomycin resistance genes, named fosM.
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