Table 1. Strains, plasmids, and primers used in this study.

Strain or plasmid	Description	Reference
SA13011-HeR	Heterogeneous-mecA(+) oxacillin susceptible	This study; [12]
SA13011-HoR	SA13011-HeR + OXA (0.5 µg/ml); SA13011 homogeneous derivative	This study; [12]
LMR-15	(SA13011ΔacnA::tetM)	[17]
LMR-16	(SA13011ΔacnA::tetM) OXA (0.5 µg/ml); LMR-15- homogeneous derivative	[17]
LMR-HeR	SA13011 HeR+pAD2 (pAD1-lexA-G94E)	[12]
LMR-HoR	SA13011 HeR+pAD2 +OXA (0.5 µg/ml)	[12]