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OppA Escherichia coli mutants have osmodependent resistance to aminoglycoside antibiotics
Author(s) -
Maria Heloisa Tsuhako,
Luís Carlos de Souza Ferreira,
Samuel Macedo Costa
Publication year - 1998
Publication title -
genetics and molecular biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.549
H-Index - 55
eISSN - 1678-4685
pISSN - 1415-4757
DOI - 10.1590/s1415-47571998000100004
Subject(s) - periplasmic space , kanamycin , biology , escherichia coli , aminoglycoside , mutant , microbiology and biotechnology , permease , oligopeptide , osmotic concentration , enterobacteriaceae , antibiotics , biochemistry , peptide , gene
The oligopeptide permease (OppA) protein was found to be missing in the periplasmic fractions of Escherichia coli kanamycin-resistant mutants selected under high osmotic conditions. The growth behavior of one mutant in media containing kanamycin or the toxic peptide triornithine suggests that OppA and another cell envelope component contribute to the osmolarity-dependent aminoglycoside resistance of E. Coli. Mutantes de Escherichia coli resistentes aos aminoglicosídios por seleção in vitro em meio de cultivo de alta osmolaridade contendo canamicina podem apresentar ausência da proteína periplásmica oligopeptídio permease (OppA). O comportamento desse mutante em presença de canamicina ou do peptídio tóxico triornitina sugere que a proteína OppA e um outro componente do envoltório bacteriano contribuem para a resistência osmodependente em E. coli

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