Transient repressor effect of Fis on the growth phase-regulated osmE promoter of Escherichia coli K12

Transcription of the gene osmE of Escherichia coli is osmotically inducible and regulated by the growth phase. Expression of osmE is directed by a single promoter, osmE p , which is recognized by Eσ70 and Eσs, two forms of RNA polymerase using, respectively, the sigma factors σ70 and σs. Eσs transcribes osmE p during entry into stationary phase. Eσ70 is… CONTINUE READING