Strains of Escherichia coli which lack detectable guanosine 3', 5'-bispyrophosphate (ppGpp)
display a pleiotropic phenotype that in some respects resembles that of rpoS (katF) mutants …

The bacterial sigma factor RpoS is strongly induced under a variety of stress conditions and
during growth into stationary phase. Here, we used rpoS-lac fusions in Escherichia coli to …

RpoS, the stationary-phase sigma factor of Escherichia coli, is responsible for increased
transcription of an array of genes when cells enter stationary phase and under certain stress …

In Escherichia coli, recent intensive studies revealed that expression of a certain subset of
genes is under the control of the stationary phase‐specific sigma factor, sigma S, which is …

A mutation in the Escherichia coli gene encoding the stationary phase‐inducible sigma
factor (σs, RpoS) not only abolishes transcription of some genes in stationary phase, but …

The stationary phase expression of many conserved, adaptive bacterial proteins is
dependent on RpoS, a second vegetative sigma factor. The regulation of RpoS itself …

The sigX gene, identified as part of the international effort to sequence the Bacillus subtilis
genome, has been proposed to encode an alternative sigma factor of the extracytoplasmic …

The putative stationary‐phase sigma factor (σS) encoded by rpoS is essential for giycogen
synthesis, but is not required for the transcription of glgC and glgA, which encode ADP …

The rpoS‐encoded sigma (S) subunit of RNA polymerase is a central regulator in a
regulatory network that governs the expression of many stationary phase‐induced and …

The sigma subunit of procaryotic RNA polymerases is responsible for specific promoter
recognition and transcription initiation. In addition to the major sigma factor, σ70, in …