In Eubacteria, expression of genes transcribed by an RNA polymerase holoenzyme
containing the alternate sigma factor ς54 is positively regulated by proteins belonging to the …

Abstract sigma E and sigma 32 are two heat-and ethanol-inducible sigma-factors in
Escherichia coli. The sigma 32 regulon is also induced by unfolded and misfolded proteins …

The alternative sigma factor σ54 has been implicated in diverse functions within the cells. In
this study, we have constructed an rpoN mutant of Pseudomonas aeruginosa and …

The extracytoplasmic-function (ECF) family of sigma factors comprises a large group of
proteins required for synthesis of a wide variety of extracytoplasmic products by bacteria …

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 …

Escherichia coli σ54 was analyzed by making a series of 16 internal deletions within its
gene and analyzing the properties of the mutant proteins. All of the mutant proteins except …

The Bacillus subtilis pur operon is a 12-gene cluster, purEKB-purC (orf) QLF-purMNH (J)-
purD, organized in groups of overlapping coding units separated by intercistronic gaps …

The variable sigma (σ) subunit of the bacterial RNA polymerase (RNAP) holoenzyme, which
is responsible for promoter specificity and open complex formation, plays a strategic role in …

The RNA polymerase‐binding protein DksA is a cofactor required for guanosine
tetraphosphate (ppGpp)‐responsive control of transcription from σ70 promoters. Here we …

The Bacillus subtilis sigW gene encodes an extracytoplasmic function (ECF) σ factor that is
expressed in early stationary phase from a sigW‐dependent autoregulatory promoter, PW …