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Article

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

Gene - 8 Dec 1993

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

Abstract excerpt

FixL and FixJ belong to a two-component regulatory system in Rhizobium meliloti that induces the expression of numerous nitrogen-fixation genes during symbiosis with alfalfa. FixJ is a positive activator required for transcription of the regulatory genes nifA and fixK, while FixL is an oxygen-binding hemoprotein capable of regulating the phosphorylation status of both itself and FixJ, in response to oxygen...

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Source

Identifiers

PMID: 8262372
DOI: 10.1016/0378-1119(93)90088-k

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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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Mutants of the two-component regulatory protein FixJ of Rhizobium meliloti that have increased activity at the nifA promoter.PMID 8262372Read ↗

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

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

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

Involvement of fixLJ in the regulation of nitrogen fixation in Azorhizobium caulinodans.Semantic proximity Read ↗

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

A glutamine-amidotransferase-like protein modulates FixT anti-kinase activity in Sinorhizobium meliloti.Semantic proximity Read ↗

Symbiotic nitrogen fixation by a nifA deletion mutant of Rhizobium meliloti: the role of an unusual ntrC allele.Semantic proximity Read ↗

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