RT Journal Article SR Electronic T1 The ars operon of Escherichia coli confers arsenical and antimonial resistance. JF Journal of Bacteriology JO J. Bacteriol. FD American Society for Microbiology SP 981 OP 986 DO 10.1128/jb.177.4.981-986.1995 VO 177 IS 4 A1 Carlin, A A1 Shi, W A1 Dey, S A1 Rosen, B P YR 1995 UL http://jb.asm.org/content/177/4/981.abstract AB The chromosomally encoded arsenical resistance (ars) operon subcloned into a multicopy plasmid was found to confer a moderate level of resistance to arsenite and antimonite in Escherichia coli. When the operon was deleted from the chromosome, the cells exhibited hypersensitivity to arsenite, antimonite, and arsenate. Expression of the ars genes was inducible by arsenite. By Southern hybridization, the operon was found in all strains of E. coli examined but not in Salmonella typhimurium, Pseudomonas aeruginosa, or Bacillus subtilis.