Evidence map›Paper›PMID 26179020›Full record

ArticleMolecular microbiology2015

The Clostridium difficile cell wall protein CwpV confers phase-variable phage resistance.

Ognjen Sekulovic, Maicol Ospina Bedoya, Amanda S Fivian-Hughes, Neil F Fairweather, Louis-Charles Fortier

Open access · hybridAbstract read
In one paragraph

Article in Molecular microbiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
2.1field-weighted citation impact, top 13% 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

44 citing papers in PubMed, 68 citations in OpenAlex.

  1. Review
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  9. Isolation of phages infecting the zoonotic pathogenbioRxiv : the preprint server for biology · 2025
    Article
  10. Article
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  12. Article
  13. Review
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  15. Article
  16. Biofilm Formation ofMicroorganisms · 2023
    Review
  17. The RgaS-RgaR two-component system promotesbioRxiv : the preprint server for biology · 2023
    Article
  18. Microbiology (Reading, England) · 2023
    Review
  19. Article
  20. Review
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 2 countries.

Ognjen SekulovicDépartement de microbiologie et d'infectiologie, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Québec, Canada.
Maicol Ospina BedoyaDépartement de microbiologie et d'infectiologie, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Québec, Canada.
Amanda S Fivian-HughesCentre for Molecular Bacteriology and Infection, Department of Life Sciences, Imperial College London, London, UK.
Neil F FairweatherCentre for Molecular Bacteriology and Infection, Department of Life Sciences, Imperial College London, London, UK.
Louis-Charles FortierDépartement de microbiologie et d'infectiologie, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Québec, Canada.
Université de Sherbrooke · CAImperial College London · GB

Funding

Medical Research Council G1001721Wellcome TrustWellcome Trust 090969
6 · The paper itself

Abstract

Bacteriophages are present in virtually all ecosystems, and bacteria have developed multiple antiphage strategies to counter their attacks. Clostridium difficile is an important pathogen causing severe intestinal infections in humans and animals. Here we show that the conserved cell-surface protein CwpV provides antiphage protection in C. difficile. This protein, for which the expression is phase-variable, is classified into five types, each differing in their repeat-containing C-terminal domain. When expressed constitutively from a plasmid or the chromosome of locked 'ON' cells of C. difficile R20291, CwpV conferred antiphage protection. Differences in the level of phage protection were observed depending on the phage morphological group, siphophages being the most sensitive with efficiency of plaquing (EOP) values of < 5 × 10(-7) for phages ϕCD38-2, ϕCD111 and ϕCD146. Protection against the myophages ϕMMP01 and ϕCD52 was weaker, with EOP values between 9.0 × 10(-3) and 1.1 × 10(-1). The C-terminal domain of CwpV carries the antiphage activity and its deletion, or part of it, significantly reduced the antiphage protection. CwpV does not affect phage adsorption, but phage DNA replication is prevented, suggesting a mechanism reminiscent of superinfection exclusion systems normally encoded on prophages. CwpV thus represents a novel ubiquitous host-encoded and phase-variable antiphage system in C. difficile.

Indexed as

AnimalsBacterial ProteinsBacteriophagesCell WallClostridioides difficileDNA, ViralHumansSequence Analysis, DNABacterial ProteinsDNA, Viral

Identifiers

PMID26179020
PMCPMC4737114
OpenAlexW2127725339

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.