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    Université de Fribourg

    mcr-9, An inducible gene encoding an acquired phosphoethanolamine transferase in Escherichia coli, and its origin

    Kieffer, Nicolas ; Royer, b Guilhem ; Decousser, Jean-Winoc ; Bourrel, Anne-Sophie ; Palmieri, Mattia ; Ortiz De La Rosa, Jose-Manuel ; Jacquier, Hervé ; Denamur, Erick ; Nordmann, Patrice ; Poirel, Laurent

    In: Antimicrobial Agents and Chemotherapy, 2019, vol. 63, no. 9, p. -

    The plasmid-located mcr-9 gene, encoding a putative phosphoethanolamine transferase, was identified in a colistin-resistant human fecal Escherichia coli strain belonging to a very rare phylogroup, the D-ST69-O15:H6 clone. This MCR-9 protein shares 33% to 65% identity with the other plasmid-encoded MCR-type enzymes identified (MCR-1 to -8) that have been found as sources of acquired resistance...

    Université de Fribourg

    Pfm-like enzymes are a novel family of subclass b2 metallo-β-lactamases from Pseudomonas synxantha belonging to the Pseudomonas fluorescens complex

    Poirel, Laurent ; Palmieri, Mattia ; Brilhante, Michael ; Masseron, Amandine ; Perreten, Vincent ; Nordmann, Patrice

    In: Antimicrobial Agents and Chemotherapy, 2020, vol. 64, no. 2, p. -

    A carbapenem-resistant Pseudomonas synxantha isolate recovered from chicken meat produced the novel carbapenemase PFM-1. That subclass B2 metallo-β- lactamase shared 71% amino acid identity with β-lactamase Sfh-1 from Serratia fonticola. The blaPFM-1 gene was chromosomally located and likely acquired. Variants of PFM-1 sharing 90% to 92% amino acid identity were identified in bacterial ...