Evidence map›Paper›PMID 16109945›Full record

ArticleJournal of bacteriology2005

Phosphoenolpyruvate carboxykinase is an acid-induced, chromosomally encoded virulence factor in Agrobacterium tumefaciens.

Pu Liu, Derek Wood, Eugene W Nester

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
0.8field-weighted citation impact, top 30% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

24 citing papers in PubMed, 37 citations in OpenAlex.

  1. Article
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  6. The Fast-GrowingFrontiers in microbiology · 2018
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Agrobacterium: nature's genetic engineer.Frontiers in plant science · 2014
    Article
  12. Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Pu LiuDepartment of Microbiology, Box 357242, University of Washington, Seattle, WA 98195-7242, USA.
Derek Wood
Eugene W Nester
University of Washington · US

Funding

MOLECULAR BASIS OF CROWN GALL TUMORIGENESISR01GM032618 · NIGMS · UNIVERSITY OF WASHINGTON · PI NESTER, EUGENE W · 1985 to 2005
$2.1M
NIGMS NIH HHS GM 32618NIGMS NIH HHS R01 GM032618
6 · The paper itself

Abstract

The pckA gene, encoding phosphoenolpyruvate carboxykinase, catalyzes the reversible decarboxylation and phosphorylation of oxaloacetate to form phosphoenolpyruvate. Located on the circular chromosome of Agrobacterium, this locus is adjacent to the loci chvG and chvI, encoding a two-component regulatory system that has been shown to be important in virulence. Using a reporter gene fusion, studies showed that the pckA gene is induced by acidic pH but not by acetosyringone. This acid induction is regulated by the chvG-chvI regulatory system, which controls acid-inducible genes. A pckA mutant had no demonstrable PckA enzyme activity and grew on AB minimal medium with glucose but did not grow on the same medium with succinate as the sole carbon source and was more inhibited in its growth than the wild-type strain by an acidic environment. A pckA mutant was highly attenuated in tumor-inducing ability on tobacco leaf disks and was severely attenuated in vir gene expression. Although vir gene induction was completely restored when a constitutive virG gene was introduced into the mutant strain, virulence was only partially restored. These results suggest that avirulence may be due to a combination of the inhibition of this mutant in the acidic plant wound environment and the poor induction of the vir genes.

Indexed as

Chromosomes, BacterialAgrobacterium tumefaciensBase SequenceCulture MediaDNA PrimersGene Expression Regulation, EnzymologicGenetic Complementation TestPhosphoenolpyruvate Carboxykinase (ATP)Transcriptional ActivationVirulenceCulture MediaDNA PrimersPhosphoenolpyruvate Carboxykinase (ATP)

Identifiers

PMID16109945
PMCPMC1196135
OpenAlexW2152059157

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.