TABLE 3.

Sensitivity of S. aureus strain RN4220 transformed with various plasmids to erythromycin and florfenicol

StrainMIC (μg/ml)
ErythromycinFlorfenicol
RN4220(pMS2)>1,024128
RN4220(pLI50)a0.54
RN4220(pErmBΔ1)b0.54
RN4220(pMS2X1)c>1,024128
RN4220(pMS2X2)d>1,0244
  • a Empty vector.

  • b pMS2 with deletion of erm(B) promoter.

  • c pMS2 with first AUG of cfr mutagenized to CAG.

  • d pMS2 with second AUG of cfr mutagenized to CAG.