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Mutations in Ribosomal Protein L3 Are Associated with Oxazolidinone Resistance in Staphylococci of Clinical Origin
Author(s) -
Jeffrey B. Locke,
M.T. Hilgers,
Karen Joy Shaw
Publication year - 2009
Publication title -
antimicrobial agents and chemotherapy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.07
H-Index - 259
eISSN - 1070-6283
pISSN - 0066-4804
DOI - 10.1128/aac.01032-09
Subject(s) - 23s ribosomal rna , linezolid , staphylococcus aureus , peptidyl transferase , ribosomal protein , staphylococcus epidermidis , ribosomal rna , biology , microbiology and biotechnology , staphylococcal infections , genetics , bacteria , ribosome , rna , gene , vancomycin
Following recent reports of ribosomal protein L3 mutations in laboratory-derived linezolid-resistant (LZD(r)) Staphylococcus aureus, we investigated whether similar mutations were present in LZD(r) staphylococci of clinical origin. Sequence analysis of a variety of LZD(r) isolates revealed two L3 mutations, DeltaSer145 (S. aureus NRS127) and Ala157Arg (Staphylococcus epidermidis 1653059), both occurring proximal to the oxazolidinone binding site in the peptidyl transferase center. The oxazolidinone torezolid maintained a >or=8-fold potency advantage over linezolid for both strains.

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