Evidence map›Paper›PMID 21527009›Full record

ArticleBMC microbiology2011

Identification and characterisation of a novel adhesin Ifp in Yersinia pseudotuberculosis.

Philippa C R Strong, Stewart J Hinchliffe, Hannah Patrick, Steve Atkinson, Olivia L Champion, Brendan W Wren

Open access · goldAbstract read
In one paragraph

Article in BMC microbiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
1.8field-weighted citation impact, top 15% 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

8 citing papers in PubMed, 19 citations in OpenAlex.

  1. Anti-infective compounds forSustainable microbiology · 2026
    Review
  2. Article
  3. Comparative genomic insights intoMicrobial genomics · 2020
    Article
  4. Review
  5. The invasin D protein fromThe Journal of biological chemistry · 2018
    Article
  6. Article
  7. Article
  8. 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

6 authors at 5 institutions in 1 country.

Philippa C R StrongPathogen Molecular Biology Unit, Department of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, WC1E 7HT, UK.
Stewart J Hinchliffe
Hannah Patrick
Steve Atkinson
Olivia L Champion
Brendan W Wren
London School of Hygiene & Tropical Medicine · GBQueen's Medical Centre · GBUniversity of Exeter · GBUniversity of London · GBUniversity of Nottingham · GB

Funding

Biotechnology and Biological Sciences Research Council BB/D52336X/1
6 · The paper itself

Abstract

backgroundIn order to identify new virulence determinants in Y. pseudotuberculosis a comparison between its genome and that of Yersinia pestis was undertaken. This reveals dozens of pseudogenes in Y. pestis, which are still putatively functional in Y. pseudotuberculosis and may be important in the enteric lifestyle. One such gene, YPTB1572 in the Y. pseudotuberculosis IP32953 genome sequence, encodes a protein with similarity to invasin, a classic adhesion/invasion protein, and to intimin, the attaching and effacing protein from enteropathogenic (EPEC) and enterohaemorraghic (EHEC) Escherichia coli.

resultsWe termed YPTB1572 Ifp (Intimin family protein) and show that it is able to bind directly to human HEp-2 epithelial cells. Cysteine and tryptophan residues in the C-terminal region of intimin that are essential for function in EPEC and EHEC are conserved in Ifp. Protein binding occurred at distinct foci on the HEp-2 cell surface and can be disrupted by mutation of a single cysteine residue at the C-terminus of the protein. Temporal expression analysis using lux reporter constructs revealed that ifp is expressed at late log phase at 37°C in contrast to invasin, suggesting that Ifp is a late stage adhesin. An ifp defined mutant showed a reduction in adhesion to HEp-2 cells and was attenuated in the Galleria mellonella infection model.

conclusionA new Y. pseudotuberculosis adhesin has been identified and characterised. This Ifp is a new member in the family of invasin/intimin outer membrane adhesins.

Indexed as

Adhesins, BacterialAmino Acid SubstitutionAnimalsBacterial AdhesionCell LineDisease Models, AnimalGene Expression ProfilingHepatocytesHumansLepidopteraMutagenesis, Site-DirectedMutant ProteinsProtein BindingSurvival AnalysisVirulence FactorsYersinia pseudotuberculosisAdhesins, BacterialMutant ProteinsVirulence FactorsYadA protein, Yersinia

Identifiers

PMID21527009
PMCPMC3102037
OpenAlexW2000465818

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.