Table 1.

S. aureus strains used in this study

StrainRelevant feature of the strainReference
Mu50Reduced susceptibility to vancomycin (MIC, 8 μg/ml) 11
Mu3Reduced susceptibility to vancomycin (heterogeneousa) 11
Mu50ωReduced susceptibility to vancomycin (heterogeneousa)This study
N315Susceptible to vancomycin, pre-MRSA 7
H1Susceptible to vancomycin, MRSA 11
FDA209PSusceptible to vancomycin, MSSAb type strain 11
BB255Equivalent to NCTC8325, MSSA 11
BB270NCTC8325 transduced with mecdeterminant 5
BB589 femC mutant derived from BB270 5
  • a Contains subpopulation of cells for which the MIC is 8 μg/ml or greater.

  • b MSSA, methicillin-susceptible S. aureus.