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Article

Mutational analysis of the VirG protein, a transcriptional activator of Agrobacterium tumefaciens virulence genes.

Journal of bacteriology - 1 Oct 1990

Roitsch T, Wang H, Jin S G, Nester E W

Abstract excerpt

The VirG protein of Agrobacterium tumefaciens is required in conjunction with the VirA protein for transcriptional activation of the virulence (vir) genes in response to plant phenolic compounds. These proteins are members of a family of two component regulatory systems. vir genes are activated via a cascade of phosphorylation reactions involving a specific aspartic acid residue of the VirG protein. We have...

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Identifiers

PMID: 2211523
DOI: 10.1128/jb.172.10.6054-6060.1990
PMCID: PMC526929

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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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Mutational analysis of the VirG protein, a transcriptional activator of Agrobacterium tumefaciens virulence genes.PMID 2211523Read ↗

Phosphorylation of the VirG protein of Agrobacterium tumefaciens by the autophosphorylated VirA protein: essential role in biological activity of VirG.Semantic proximity Read ↗

Functional roles assigned to the periplasmic, linker, and receiver domains of the Agrobacterium tumefaciens VirA protein.Semantic proximity Read ↗

Genetic analysis of the signal-sensing region of the histidine protein kinase VirA of Agrobacterium tumefaciens.Semantic proximity Read ↗

Mutants of Agrobacterium tumefaciens with elevated vir gene expression.Semantic proximity Read ↗

Constitutive mutations of Agrobacterium tumefaciens transcriptional activator virG.Semantic proximity Read ↗

Mutants of Agrobacterium tumefaciens virG gene that activate transcription of vir promoter in Escherichia coli.Semantic proximity Read ↗

The regulatory VirG protein specifically binds to a cis-acting regulatory sequence involved in transcriptional activation of Agrobacterium tumefaciens virulence genes.Semantic proximity Read ↗

The integrity of the periplasmic domain of the VirA sensor kinase is critical for optimal coordination of the virulence signal response in Agrobacterium tumefaciens.Semantic proximity Read ↗

Regulation of Agrobacterium tumefaciens virulence gene expression: isolation of a mutation that restores virGD52E function.Semantic proximity Read ↗

Intersubunit complementation of sugar signal transduction in VirA heterodimers and posttranslational regulation of VirA activity in Agrobacterium tumefaciens.Semantic proximity Read ↗

The N-terminal domain of VirG of Agrobacterium tumefaciens: modelling and analysis of mutant phenotypes.Semantic proximity Read ↗

Transcriptional induction of an Agrobacterium regulatory gene at tandem promoters by plant-released phenolic compounds, phosphate starvation, and acidic growth media.Semantic proximity Read ↗

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