Salmonella typhimurium rpoB and rpoC genes cloned on lambda phages

Salmonella typhimurium rpoB and rpoC genes, coding for the RNA polymerase subunits beta and beta', respectively, were isolated on lambda phages. Like their E. coli counterparts the two genes are closely linked and probably share a common promoter. The distribution of the target sites for several restriction enzymes, however, shows considerable divergence from the E. coli pattern.