Evidence map›Paper›PMID 15292132›Full record

ArticleJournal of bacteriology2004

Molecular analysis of cytolysin A (ClyA) in pathogenic Escherichia coli strains.

Albrecht Ludwig, Christine von Rhein, Susanne Bauer, Christian Hüttinger, Werner Goebel

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
2.5field-weighted citation impact, top 12% 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

37 citing papers in PubMed, 80 citations in OpenAlex.

  1. Whole-Genome Sequencing ofMicroorganisms · 2026
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  9. Bacterial pore-forming toxins.Microbiology (Reading, England) · 2022
    Article
  10. Review
  11. Comparative Pathogenomics ofInfection and immunity · 2021
    Article
  12. Review
  13. Article
  14. Review
  15. Article
  16. Plasma Immunoglobulin A Responses Against 2 Salmonella Typhi Antigens Identify Patients With Typhoid Fever.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2019
    Article
  17. Article
  18. Article
  19. Review
  20. Detection of Typhoidal and Paratyphoidal Salmonella in Blood by Real-time Polymerase Chain Reaction.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2015
    Article
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

5 authors at 2 institutions in 1 country.

Albrecht LudwigInstitut für Medizinische Mikrobiologie, Klinikum der Johann Wolfgang Goethe-Universität, 60596 Frankfurt am Main, Germany. albrecht.ludwig@em.uni-frankfurt.de
Christine von Rhein
Susanne Bauer
Christian Hüttinger
Werner Goebel
Goethe University Frankfurt · DEUniversity of Würzburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cytolysin A (ClyA) of Escherichia coli is a pore-forming hemolytic protein encoded by the clyA (hlyE, sheA) gene that was first identified in E. coli K-12. In this study we examined various clinical E. coli isolates with regard to the presence and integrity of clyA. PCR and DNA sequence analyses demonstrated that 19 of 23 tested Shiga toxin-producing E. coli (STEC) strains, all 7 tested enteroinvasive E. coli (EIEC) strains, 6 of 8 enteroaggregative E. coli (EAEC) strains, and 4 of 7 tested enterotoxigenic E. coli (ETEC) strains possess a complete clyA gene. The remaining STEC, EAEC, and ETEC strains and 9 of the 17 tested enteropathogenic E. coli (EPEC) strains were shown to harbor mutant clyA derivatives containing 1-bp frameshift mutations that cause premature termination of the coding sequence. The other eight EPEC strains and all tested uropathogenic and new-born meningitis-associated E. coli strains (n = 14 and 3, respectively) carried only nonfunctional clyA fragments due to the deletion of two sequences of 493 bp and 204 or 217 bp at the clyA locus. Expression of clyA from clinical E. coli isolates proved to be positively controlled by the transcriptional regulator SlyA. Several tested E. coli strains harboring a functional clyA gene produced basal amounts of ClyA when grown under standard laboratory conditions, but most of them showed a clyA-dependent hemolytic phenotype only when SlyA was overexpressed. The presented data indicate that cytolysin A can play a role only for some of the pathogenic E. coli strains.

Indexed as

Amino Acid SequenceBacterial ProteinsCodon, NonsenseDNA, BacterialEscherichia coliEscherichia coli InfectionsEscherichia coli ProteinsFrameshift MutationGene Expression Regulation, BacterialGenes, BacterialHemolysin ProteinsHemolysisMolecular Sequence DataPolymerase Chain ReactionSequence AlignmentSequence Analysis, DNABacterial ProteinsCodon, NonsenseDNA, BacterialEscherichia coli ProteinsHemolysin ProteinshlyE protein, E colisalmolysinTranscription FactorsVirulence Factors

Identifiers

PMID15292132
PMCPMC490944
OpenAlexW2109960430

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.