Summary
A general method was developed for the isolation of Salmonella thyphimurium LT2 Mu d1–8 (Apr lac) operon fusions in a gene displacing a Tn10 insertion. Random Mu d1–8 fusion pools were prepared to grow phage P22 lysates which transduced chlC::Tn10 to AprTets on fusaric acidampicillin plates. Among these AprTets potential chlC::Mu d1–8 fusions, a simple spot test identified the fusions that were closely linked to the Tn10 insertion in chlC. Out of 68 AprTets isolates 7 chlC::Mu d1–8 fusions with a nitrate-induced Lac+ phenotype were obtained. When oxrA::Tn10 was transduced into these chlC::Mu d1–8 fusions, they became Lac- even in the presence of nitrate, confirming that they were chlC::Mu d1–8 fusions.
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Communicated by P. Starlinger
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Kwan, H.S., Wong, K.K. A general method for isolation of Mu d 1–8(Apr lac) operon fusions in Salmonella typhimurium LT2 from Tn10 insertion strains: chlC::Mu d 1–8. Molec. Gen. Genet. 205, 221–224 (1986). https://doi.org/10.1007/BF00430431
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DOI: https://doi.org/10.1007/BF00430431