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Article

FixL of Rhizobium meliloti enhances the transcriptional activity of a mutant FixJD54N protein by phosphorylation of an alternate residue.

Journal of bacteriology - 1 Apr 1994

Reyrat J M, David M, Batut J, Boistard P

Abstract excerpt

In Rhizobium meliloti, transcription of nitrogen fixation genes is induced in oxygen-depleted conditions under the control of the two-component regulatory system FixLJ. FixJ is a transcriptional activator whose activity is dramatically enhanced by phosphorylation, whereas FixL is a hemoprotein kinase that controls the level of phosphorylated FixJ in response to oxygen availability. We have found that a mutant...

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Identifiers

PMID: 8144464
DOI: 10.1128/jb.176.7.1969-1976.1994
PMCID: PMC205301

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

Related research

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Research trail→

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FixL of Rhizobium meliloti enhances the transcriptional activity of a mutant FixJD54N protein by phosphorylation of an alternate residue.PMID 8144464Read ↗

Mutants of the two-component regulatory protein FixJ of Rhizobium meliloti that have increased activity at the nifA promoter.Semantic proximity Read ↗

Autophosphorylation and phosphatase activities of the oxygen-sensing protein FixL of Rhizobium meliloti are coordinately regulated by oxygen.Semantic proximity Read ↗

Isolation of phosphorylation-deficient mutants of the Rhizobium meliloti two-component regulatory protein, FixJ.Semantic proximity Read ↗

The uncoupling of oxygen sensing, phosphorylation signalling and transcriptional activation in oxygen sensor FixL and FixJ mutants.Semantic proximity Read ↗

Alterations of highly conserved residues in the regulatory domain of nitrogen regulator I (NtrC) of Escherichia coli.Semantic proximity Read ↗

Bradyrhizobium japonicum FixK2, a crucial distributor in the FixLJ-dependent regulatory cascade for control of genes inducible by low oxygen levels.Semantic proximity Read ↗

Promoter-specific involvement of the FixJ receiver domain in transcriptional activation.Semantic proximity Read ↗

Glutamate at the site of phosphorylation of nitrogen-regulatory protein NTRC mimics aspartyl-phosphate and activates the protein.Semantic proximity Read ↗

Regulation of fixLJ by Hfq Controls Symbiotically Important Genes in Sinorhizobium meliloti.Semantic proximity Read ↗

Regulatory roles of the bacterial nitrogen-related phosphotransferase systemSemantic proximity Read ↗

A TPR scaffold couples signal detection to OdhI phosphorylation in metabolic control by the protein kinase PknGSemantic proximity Read ↗

Extensive regulation of enzyme activity by phosphorylation in Escherichia coli.Semantic proximity Read ↗

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