Summary
By screening 42 Salmonella strains with P3, a temperate bacteriophage with an unusually wide host range, five new DNA restriction and modification systems (R-M systems) were identified in five different serotypes in Kauffmann-White group C. One of these systems, SP, in a Pl-sensitive strain of S. potsdam, was analyzed genetically by Pl transduction methods in which SP was transferred into S. typhimurium and E. coli/S. typhimurium hybrids. It was found that the genes of the SP system were allelic and functionally homologous to the genes of the SB system of S. typhimurium.
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Communicated by W. Arber
This work was done while on sabbatical leave at the Université de Louvain. Present address: Department of Microbiology, School of Medicine. Loma Linda University, Loma Linda, California 92354, U.S.A.
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Bullas, L.R., Colson, C. DNA restriction and modification systems in Salmonella . Molec. Gen. Genet. 139, 177–188 (1975). https://doi.org/10.1007/BF00268970
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DOI: https://doi.org/10.1007/BF00268970