title: UV-mutable hybrids of Salmonella incorporating Escherichia coli region adjacent to tryptophan operon.
abstract: Salmonella typhimurium recombinants have been constructed which have acquired UV-induced mutability. Such recombinants were obtained after transfer of plasmid F'126 from E. coli. UV-mutability was acquired by UV-stable Salmonella as a nonselective marker after selection of trp+ marker in 2.5% of the cases. Possible deficiency in UV-stable Salmonella of the umuC gene is discussed.
mesh_terms: D004274:DNA, Recombinant; D004926:Escherichia coli / Q000235:genetics*; D005798:Genes, Bacterial; D008040:Genetic Linkage; D009154:Mutation / Q000528:radiation effects*; D009876:Operon; D012475:Salmonella / Q000235:genetics* / Q000528:radiation effects; D014364:Tryptophan / Q000235:genetics; D014466:Ultraviolet Rays
chemical_list: D004274:DNA, Recombinant; D014364:Tryptophan