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  • LmrS is a multidrug efflux pump of the major facilitator superfamily from Staphylococcus aureus.

LmrS is a multidrug efflux pump of the major facilitator superfamily from Staphylococcus aureus.

Antimicrobial agents and chemotherapy (2010-09-22)
Jody L Floyd, Kenneth P Smith, Sanath H Kumar, Jared T Floyd, Manuel F Varela
ABSTRACT

A multidrug efflux pump designated LmrS (lincomycin resistance protein of Staphylococcus aureus), belonging to the major facilitator superfamily (MFS) of transporters, was cloned, and the role of LmrS in antimicrobial efflux was evaluated. The highest relative increase in MIC, 16-fold, was observed for linezolid and tetraphenylphosphonium chloride (TPCL), followed by an 8-fold increase for sodium dodecyl sulfate (SDS), trimethoprim, and chloramphenicol. LmrS has 14 predicted membrane-spanning domains and is homologous to putative lincomycin resistance proteins of Bacillus spp., Lactobacillus spp., and Listeria spp.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Ethidium bromide solution, BioReagent, Molecular Biology, 500 μg/mL in H2O
Sigma-Aldrich
Trimethoprim, ≥98.5%
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Sulfadimethoxine, 98.0-102.0%
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Rifampicin, ≥95% (HPLC), powder or crystals
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Rifampicin, suitable for plant cell culture, BioReagent, ≥95% (HPLC), powder or crystals
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Sulfadimethoxine, VETRANAL®, analytical standard
Sigma-Aldrich
Trimethoprim, ≥99.0% (HPLC)
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Trimethoprim, VETRANAL®, analytical standard
Sigma-Aldrich
Ethidium bromide solution, suitable for fluorescence, ~1% in H2O
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Erythromycin, BioReagent, suitable for cell culture
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Sodium dodecyl sulfate, BioReagent, Molecular Biology, ≥98.5% (GC), free-flowing, Redi-Dri
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Sodium dodecyl sulfate, ≥98.0% (GC)
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Sodium dodecyl sulfate, BioXtra, ≥99.0% (GC)
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Sodium dodecyl sulfate, 92.5-100.5% based on total alkyl sulfate content basis
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Sodium dodecyl sulfate, suitable for ion pair chromatography, LiChropur, ≥99.0%
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Sodium dodecyl sulfate, BioReagent, suitable for electrophoresis, Molecular Biology, ≥98.5% (GC)
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Sodium dodecyl sulfate, ACS reagent, ≥99.0%
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Sodium dodecyl sulfate, ≥90% ((Assay))
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Sodium dodecyl sulfate, tested according to NF, mixture of sodium alkyl sulfates consisting mainly of sodium dodecyl sulfate
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Sodium dodecyl sulfate, BioUltra, Molecular Biology, ≥99.0% (GC)
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Erythromycin, potency: ≥850 μg per mg
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Erythromycin, meets USP testing specifications
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Tetraphenylphosphonium chloride, 98%
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Sodium dodecyl sulfate, ReagentPlus®, ≥98.5% (GC)
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Erythromycin, tested according to Ph. Eur.
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Carbonyl cyanide 3-chlorophenylhydrazone, ≥97% (TLC), powder
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Sodium dodecyl sulfate solution, BioUltra, Molecular Biology, 10% in H2O
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Hexadecyltrimethylammonium bromide, analytical standard
Sigma-Aldrich
Hexadecyltrimethylammonium bromide, ≥98%
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Hexadecyltrimethylammonium bromide, suitable for ion pair chromatography, LiChropur