A gene from Escherichia coli affecting the sigma subunit of RNA polymerase.

Abstract
The RNA polymerase [EC 2.7.7.6] .sigma. subunits of E. coli K, E. coli C and Salmonella typhimurium can be resolved by electrophoresis. Using this technique, Salmonella strains carrying F'' plasmids from E. coli K were analyzed to map the gene for the .sigma. factor. Partial diploid analyses show the location of the .sigma. gene at 62-66 min on the E. coli genetic map. This gene is cotransducible with tolC and dnaG at 66 min.