Linkage map of Salmonella typhimurium, edition V

Linkage map of Salmonella typhimurium, edition VII.

“…Comparison of the Linkage Maps of S. typhimurium and E. coli K-12 Earlier comparisons of the linkage maps of S. triphimurium and E. coli K-12 (412,418), updated and extended recently (392), continue to show striking overall similarity in the map order of genes. However, some differences have been found.…”

“…(112) for E. coli, we obtained 108 to 109 transformants per jig PyrB+ S a F-prime factors carrying E. coli genes were obtained from B. Bachmann, Coli Genetic Stock Center, and had been previously transferred in several different laboratories to S. typhimurium; most of these strains were described by Sanderson and Hartman (412). D. Sheaks, M. Haskell, and L. Csonka obtained these strains from K. Hughes and J. Roth and constructed most of the strains in the table by transducing TnIO or TnS from strains with these transposons at known insertion sites in the F factor in the the F-prime factors; they then confirmed that the antibiotic resistance (TcT for TnlO, Kmr for TnO) is transferred by conjugation together with the chromosomal genes on the F' factor.…”

“…Methods for F-factor-mediated conjugation were described earlier (412,416). The frequency of formation of transconjugants in F-factor-mediated conjugation between S. typhimurium donor and recipient strains is the same as in crosses within E. coli K-12 if two barriers to mating are overcome.…”

“…The first edition of the map (411) contained 133 genes. Later editions were published in 1967 (408), 1970 (409), 1972 (410), 1978 (412), and 1983 (418).…”

Mapping hisS, the structural gene for histidyl-transfer ribonucleic acid synthetase, in Escherichia coli

“…Unfortunately one such region seems to be that which contains the hisS gene. By using the same size map units, the region is longer in S. typhimurium than in E. coli, and the orders of several of the loci are reported to be different in the two organisms (2,11).…”