Heterogeneity of mprF sequences in methicillin-resistant Staphylococcus aureus clinical isolates: role in cross-resistance between daptomycin and host defense antimicrobial peptides.

Abstract excerpt

Over the past several years, single-nucleotide polymorphisms (SNPs) within the mprF open reading frame (ORF) have been proposed to be associated with a gain-of-function phenotype in terms of daptomycin (DAP) nonsusceptibility (referred to as daptomycin resistance [DAP-R] herein for ease of presentation) in Staphylococcus aureus. We investigated the frequencies of SNPs within the mprF ORF and the relationships of...

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