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. 1995 Jul;177(14):4176–4178. doi: 10.1128/jb.177.14.4176-4178.1995

Regulation of the multiple antibiotic resistance (mar) regulon by marORA sequences in Escherichia coli.

R G Martin 1, P S Nyantakyi 1, J L Rosner 1
PMCID: PMC177157  PMID: 7608098

Abstract

The mar operon and adjacent sequences were subcloned on a low-copy-number plasmid to identify essential regulatory elements. A 1.1-kbp fragment containing 133 bp of the operator-promoter region (marO), the full marRA gene sequences, and only 10 of 72 marB codons provided a dela mar strain with normal repressibility and inducibility and the ability to beget mar constitutive mutants.

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Selected References

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