Differential Adaptations of Methicillin-ResistantStaphylococcus aureusto SerialIn VitroPassage in Daptomycin: Evolution of Daptomycin Resistance and Role of Membrane Carotenoid Content and Fluidity

Abstract excerpt

Previous studies showed serial 20 d in vitro passage of MRSA strain MW2 in sublethal daptomycin (DAP) resulted in diverse perturbations in both cell membrane (CM) and cell wall (CW) characteristics, including increased CM rigidity; increased CW thickness; "gain-in-function" single nucleotide polymorphisms (SNPs) in the mprF locus (i.e., increased synthesis and translocation of lysyl-phosphatidylglycerol (L-PG));...

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