Spontaneous kanamycin-resistant Escherichia coli mutant with altered periplasmic oligopeptide permease protein (OppA) and impermeability to aminoglycosides

Author:

Rodriguez Mônica B.1,Costa Sérgio O. P.2

Affiliation:

1. Universidade Federal de Minas Gerais, Brasil

2. Universidade de São Paulo, Brasil

Abstract

A spontaneous kanamycin-resistant Escherichia coli mutant, showing cross resistance to five other aminoglycosides and absence of the OppA protein was isolated. [3H]-dihydrostreptomycin uptake is reduced in this mutant, implying that the oligopeptide transport system is involved in accumulation of aminoglycosides, although apparently not related with aminoglycoside permeability alteration due to bacterial adaptation to osmotic changes.

Publisher

FapUNIFESP (SciELO)

Subject

General Agricultural and Biological Sciences,Microbiology

Reference16 articles.

1. Osmodependência e alteração da proteína periplasmática OppA em amostras hospitalares de Escherichia coli resistentes aos aminoglicosídeos;Acosta M.B.R.,1997

2. Simple, rapid and quantitative release of periplasmic proteins by chloroform;Ames G.F.L.;J. Bacteriol.,1984

3. Effects of membrane-energy mutations and cations on streptomycin accumulation by bacteria: a model for entry of streptomycin and gentamicin in susceptible and resistant bacteria;Bryan L.E.;Antimicrob. Agents Chemother.,1977

4. Experiments in Microbial Genetics;Clowes R.C.,1968

5. Molecular mechanism of polyamine stimulation of the synthesis of oligopeptide-binding protein;Igarashi K.;J. Biol. Chem.,1997

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