RobA-Induced Multiple Antibiotic Resistance Largely Depends on the Activation of the AcrAB Efflux

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RobA is a member of the XylS/AraC subfamily of DNA binding proteins, and when overexpressed, it induces multiple antibiotic resistance in <i>Escherichia coli</i>. In this study, we introduced a multicopy <i>robA</i> plasmid (pMEP1) and its derivative into OmpF mutants and an AcrAB-deficient mutant. We found that a decrease in susceptibility to multiple antibiotics in these OmpF mutants when pMEP1 was introduced did not depend on OmpF porin expression. Interestingly, a <i>ΔompF</i> mutant (TK007) became more sensitive when pMEP1 was introduced. Moreover, no effect of RobA on the induction of multiple antibiotic resistance in an <i>acrA1</i><sup>-</sup> mutant was observed. Therefore, we conclude that the multiple antibiotic resistance induced by the overexpression of RobA largely depends on the activation of the AcrAB efflux, as well as the activation of <i>micF</i>.

収録刊行物

  • Microbiology and immunology  

    Microbiology and immunology 41(9), 697-702, 1997-09-20 

    Center For Academic Publications Japan

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各種コード

  • NII論文ID(NAID)
    10004897952
  • NII書誌ID(NCID)
    AA00738350
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    03855600
  • NDL 記事登録ID
    4317097
  • NDL 雑誌分類
    ZS9(科学技術--医学--病理学・微生物学・寄生虫学・感染・免疫学・血清学・アレルギー)
  • NDL 請求記号
    Z53-M387
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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