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. 1975 Aug 27;139(3):177-88.

DNA restriction and modification systems in Salmonella. III. SP, a Salmonella potsdam system allelic to the SB system in Salmonella typhimurium

L R Bullas, C Colson
  • PMID: 1102934

DNA restriction and modification systems in Salmonella. III. SP, a Salmonella potsdam system allelic to the SB system in Salmonella typhimurium

L R Bullas et al. Mol Gen Genet. .

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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