TABLE 1

Bacterial strains used in this study

StrainResistanceDescriptionReference or source
S. salivarius strains
    57.IWild-type strain 47
    MC308Sp57.I harboring spe-pureI-cat at lacZ 15
    MC308_ΔcodYSp, EmMC308 codY::erm 15
    MC308_mVicR_boxSpNucleotides −59 to −64 of pureI in MC308 are mutatedThis study
    ΔcodY_mGlnR_box-1Sp, EmGlnR box 1 of pureI in MC308_ΔcodY is mutatedThis study
    ΔcodY_mGlnR_box-2Sp, EmGlnR box 2 of pureI in MC308_ΔcodY is mutatedThis study
S. gordonii strains
    CH1Wild-type strain 42
    SL17SpCH1 harboring spe-pureI-cat at gtfGThis study
    SL17_ΔvicRKXSp, KmSL17 vicR::ΩkanThis study
    SL17_CΔvicRKXSp, Km, EmSL17_ΔvicRKX harboring vicRKX (of 57.I) at gtfGThis study
    SL17_ΔglnRSp, EmSL17 glnR::ermThis study
    SL17_CΔglnRSp, Km glnR::erm in SL17 is replaced by glnR (of 57.I)-kanThis study
    ΔvicRKX_mVicR_boxSp, KmNucleotides −52 to −64 of pureI in SL17_CΔvicRKX are mutatedThis study