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  • Title: DNA restriction and modification systems in Salmonella. III. SP, a Salmonella potsdam system allelic to the SB system in Salmonella typhimurium.
    Author: Bullas LR, Colson C.
    Journal: Mol Gen Genet; 1975 Aug 27; 139(3):177-88. PubMed ID: 1102934.
    Abstract:
    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 C. 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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