The nif promoters of Klebsiella pneumoniae must be activated by proteins bound to
upstream sequences which are thought to interact with the ς54-RNA polymerase …

The positive control protein NTRC activates transcription from the σ; 54‐dependent nifL and
glnAp2 promoters of Klebsiella pneumoniae by binding to upstream enhancer‐like …

Activation of transcription at the Klebsiella pneumoniae nifLA promoter requires the
phosphorylated form of the positive control protein NTRC, together with RNA polymerase …

Transcription from the σ 54-dependent Klebsiella pneumoniae nifL and glnAp2 promoters is
activated by the general nitrogen regulatory protein NTRC. Unlike the glnAp2 promoter …

In a wide variety of nitrogen-fixing organisms among the Purple Bacteria (large division of
Gram-negative bacteria) the nitrogen fixation (nif) operons are transcribed by an alternative …

We have constructed mutations in what we predict to be the DNA-recognition helix of
Klebsiella pneumoniae NtrC, which regulates transcription from promoters under global …

The interaction of the Klebsiella pneumoniae NifA protein, a σ 54-dependent activator, with
the nifE and nifU promoters was analysed. At these promoters NifA established contacts in …

The nifJ and nifH promoters of Klebsiella pneumoniae are divergently transcribed σ; 54‐
dependent promoters that are positively activated by the NifA protein. NifA binds to upstream …

The Klebsiella pneumoniae nifH promoter is very strictly controlled by nitrogen availability
and highly dependent on sigma 54 and integration host factor (IHF) for expression. This …

We have examined the effects on transcription initiation of promoter and enhancer strength
and of the curvature of the DNA separating these entities on wild-type and mutated …