Evidence map›Paper›PMID 19103922›Full record

ArticleJournal of bacteriology2009

Characterization of the Cpx regulon in Escherichia coli strain MC4100.

Nancy L Price, Tracy L Raivio

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 144 papers.

0numbers the graph read from it
0cells of the map it votes in
144citing papers in PubMed
7.8field-weighted citation impact, top 2% 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

144 citing papers in PubMed, 226 citations in OpenAlex.

  1. Beyond Bactericidal: Plasma Surface Engineering to Defeat Food Matrix-Conditioning Layers.Comprehensive reviews in food science and food safety · 2026
    Review
  2. The divergentMicrobiology (Reading, England) · 2026
    Article
  3. Article
  4. Plant-Derived Melatonin Inhibits Bacterial Virulence via CpxA/R Two-Component System.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Article
  5. Article
  6. Article
  7. ThemBio · 2026
    Article
  8. Article
  9. A biosensor toolbox for monitoring recombinant protein production inFrontiers in bioengineering and biotechnology · 2026
    Article
  10. ISAntibiotics (Basel, Switzerland) · 2025
    Article
  11. Review
  12. The BfmRS stress response protectsJournal of bacteriology · 2025
    Article
  13. Article
  14. Review
  15. Article
  16. Review
  17. Suppressors ofInternational journal of molecular sciences · 2023
    Article
  18. Article
  19. Article
  20. Article

84 more citing papers are in PubMed but not listed here.

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

2 authors at 1 institution in 1 country.

Nancy L PriceDepartment of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada T6G 2E9.
Tracy L Raivio
University of Alberta · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The Cpx two-component signal transduction pathway of Escherichia coli mediates adaptation to envelope protein misfolding. However, there is experimental evidence that at least 50 genes in 34 operons are part of the Cpx regulon and many have functions that are undefined or unrelated to envelope protein maintenance. No comprehensive analysis of the Cpx regulon has been presented to date. In order to identify strongly Cpx-regulated genes that might play an important role(s) in envelope protein folding and/or to further define the role of the Cpx response and to gain insight into what makes a gene subject to strong Cpx regulation, we have carried out a uniform characterization of a Cpx-regulated lux reporter library in a single-strain background. Strongly Cpx-regulated genes encode proteins that are directly linked to envelope protein folding, localized to the envelope but uncharacterized, or involved in limiting the cellular concentration of noxious molecules. Moderately Cpx-regulated gene clusters encode products implicated in biofilm formation. An analysis of CpxR binding sites in strongly regulated genes indicates that while neither a consensus match nor their orientation predicts the strength of Cpx regulation, most genes contain a CpxR binding site within 100 bp of the transcriptional start site. Strikingly, we found that while there appears to be little overlap between the Cpx and Bae envelope stress responses, the sigma(E) and Cpx responses reciprocally regulate a large group of strongly Cpx-regulated genes, most of which are uncharacterized.

Indexed as

Gene Expression Regulation, BacterialRegulonBacterial ProteinsBiofilmsEscherichia coliEscherichia coli ProteinsGenes, ReporterOperonProtein FoldingProtein KinasesSignal TransductionBacterial ProteinsCpxA protein, E coliCpxR protein, BacteriaEscherichia coli ProteinsProtein Kinases

Identifiers

PMID19103922
PMCPMC2648356
OpenAlexW2133342418

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.