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Keywords:

  • DNA sequence;
  • Escherichia coli;
  • Ethidium flux;
  • Staphylococcus aureus;
  • Polypeptide identity

Abstract: The nucleotide sequence of the gene specifying the ethidium efflux system of Escherichia coli has been determined. The translated open reading frame has identified a membrane-bound polypeptide of 110 amino acids (11 960 Da) which shares 42% identity with a staphylococcal protein specifying resistance to ethidium.