title: Factors involved in beta-lactam antibiotic resistance in Pseudomonas aeruginosa.
abstract: A temperature-sensitive mutant, strain SS, which is assumed to be devoid of beta-lactamase activity and deficient in a permeability barrier to antibiotics, was isolated from a beta-lactamase-less mutant, strain L-2, derived from Pseudomonas aeruginosa IFO 3080. By comparing the beta-lactam antibiotic susceptibility between strains IFO 3080, L-2, and SS, the involvement of both beta-lactamase and a permeability barrier in determining the beta-lactam antibiotic resistance was estimated.
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D002463:Cell Membrane Permeability; D004352:Drug Resistance, Microbial; D009154:Mutation; D011550:Pseudomonas aeruginosa / Q000187:drug effects*; D013696:Temperature; D047090:beta-Lactams / Q000494:pharmacology*
chemical_list: D000900:Anti-Bacterial Agents; D047090:beta-Lactams