Signal transduction by two‐component regulatory systems involves phosphorylation of the
receiver domain of a response regulator by the transmitter domain of the cognate histidine …

We have used the yeast two-hybrid system to analyze protein-protein interactions mediated
by domains of regulatory proteins of the ntr signal transduction system, including interactions …

NtrC is the transcriptional activator for nitrogen-regulated promoters and, as a response
regulator, belongs to the protein family of two-component systems. The activity of all …

The response regulator NtrC transcriptionally activates genes of the nitrogen-regulated (Ntr)
response. Phosphorylation of its N-terminal receiver domain stimulates an essential …

The Klebsiella pneumoniae nitrogen regulatory protein NTRC is a response regulator which
activates transcription in response to nitrogen limitation, and is a member of the family of σN …

Four substitutions at serine residue 160 which increase the activity of the σ54‐dependent
activator protein NTRC in the absence of NTRB have been analysed in detail. Mutagenesis …

A number of in‐frame insertion and deletion mutations have been constructed in vitro in the
Klebsiella pneumoniae ntrB gene and the effects of each mutant NtrB protein on NtrC activity …

The bacterial enhancer-binding protein NtrC is a well-studied response regulator in a two-
component regulatory system. The amino (N)-terminal receiver domain of NtrC modulates …

We present the nucleotide sequence of K. pneumoniae nifL, which negatively regulates nif
transcription in response to oxygen and fixed nitrogen. It shows partial sequence homology …

The nucleotide sequence of the Klebsiella pneumoniae ntrB gene and the glnA-ntrBC
intergenic region has been determined. NtrB encodes a 38,409 Dalton polypeptide with a …