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Article

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

Molecular microbiology - 1 Aug 1992

Weinstein M, Lois A F, Monson E K, Ditta G S, Helinski D R

Abstract excerpt

Rhizobium meliloti FixL and FixJ are members of a symbiotically essential two-component system that regulates nitrogen-fixation genes in response to environmental oxygen concentrations. FixL is a membrane protein that is thought to relay information about oxygen availability to FixJ via a phosphotransfer mechanism. FixJ increases expression of the nifA and fixK genes by activating transcription of the nifA and...

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Source

Identifiers

PMID: 1406247
DOI: 10.1111/j.1365-2958.1992.tb01377.x

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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.

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Click a neighbor to travelStep 1 · 12 closest

Isolation of phosphorylation-deficient mutants of the Rhizobium meliloti two-component regulatory protein, FixJ.PMID 1406247Read ↗

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 ↗

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

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

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

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

Expression and regulation of phosphate stress inducible genes in Sinorhizobium meliloti.Semantic proximity Read ↗

Role of Escherichia coli nitrogen regulatory genes in the nitrogen response of the Azotobacter vinelandii NifL-NifA complex.Semantic proximity Read ↗

The FixK2 protein is involved in regulation of symbiotic hydrogenase expression in Bradyrhizobium japonicum.Semantic proximity Read ↗

Regulation of nitrogen fixation in Azorhizobium caulinodans: identification of a fixK-like gene, a positive regulator of nifA.Semantic proximity Read ↗

The signal transduction protein GlnK is required for NifL-dependent nitrogen control of nif gene expression in Klebsiella pneumoniae.Semantic proximity Read ↗

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