title: The peptide antibiotic microcin 25 is imported through the TonB pathway and the SbmA protein.
abstract: Selection of spontaneous mutants for insensitivity to the peptide antibiotic microcin 25 led to the isolation of five categories of mutants. Phenotypic and mapping studies showed the mutations to be located in the fhuA, exb, tonB, and sbmA genes. The latter encodes a cytoplasmic membrane protein which is also required for the penetration of microcin B17.
authors.affiliation: Departamento de Bioquímica de la Nutrición, Instituto Superior de Investigaciones Biológicas (Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad Nacional de Tucumán, Argentina.
authors.forename: R A
authors.initials: RA
authors.lastname: Salomón
authors.forename: R N
authors.initials: RN
authors.lastname: Farías
mesh_terms: D001425:Bacterial Outer Membrane Proteins / Q000378:metabolism; D001426:Bacterial Proteins / Q000378:metabolism*; D001430:Bacteriocins / Q000378:metabolism*; D001692:Biological Transport; D002352:Carrier Proteins / Q000378:metabolism*; D004926:Escherichia coli / Q000378:metabolism*; D029968:Escherichia coli Proteins; D005816:Genetic Complementation Test; D008565:Membrane Proteins / Q000378:metabolism*; D011991:Receptors, Virus / Q000378:metabolism
chemical_list: D001425:Bacterial Outer Membrane Proteins; D001426:Bacterial Proteins; D001430:Bacteriocins; D002352:Carrier Proteins; D029968:Escherichia coli Proteins; C050900:FhuA protein, E coli; D008565:Membrane Proteins; D011991:Receptors, Virus; C057616:tonB protein, Bacteria; C489181:tonB protein, E coli; C020411:microcin