RT Journal Article SR Electronic(1) A1 Angus, Barbara L. A1 Fyfe, Janet A. M. A1 Hancock, Robert E. W.YR 1987 T1 Mapping and Characterization of Two Mutations to Antibiotic Supersusceptibility in Pseudomonas aeruginosa JF Microbiology, VO 133 IS 10 SP 2905 OP 2914 DO https://doi.org/10.1099/00221287-133-10-2905 PB Microbiology Society, SN 1465-2080, AB SUMMARY: Two mutations associated with antibiotic supersusceptibility in Pseudomonas aeruginosa strain Z61 were transferred separately into strain PA0222, using R68.45-mediated conjugation and phage F116L transduction. One mutation (absA) was 40% contransducible with pro-82 at 26 min on the P. aeruginosu chromosome and was associated with increased susceptibility to β-lactams, gentamicin and hydrophobic agents. Strains carrying the absA mutation also displayed enhanced uptake of a hydrophobic fluorescent probe, 1-N-phenylnaphthylamine, and were found, by SDS-PAGE, to be altered in the pattern of lipopolysaccharide O-antigen distribution. The other mutation (absB), associated with increased susceptibility to β-lactams and gentamicin but not to hydrophobic agents, was cotransducible with met-28 and proC at 20 min on the chromosome. The absB mutation caused a structurally undefined alteration in the physical interaction of EDTA and gentamicin with the outer membrane., UL https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-133-10-2905