Evidence map›Paper›PMID 25649385›Full record

ArticleMolecular microbiology2015

Clostridium difficile surface proteins are anchored to the cell wall using CWB2 motifs that recognise the anionic polymer PSII.

Stephanie E Willing, Thomas Candela, Helen Alexandra Shaw, Zoe Seager, Stéphane Mesnage, Robert P Fagan, Neil F Fairweather

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 52 papers.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed
4.5field-weighted citation impact, top 5% 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

52 citing papers in PubMed, 68 citations in OpenAlex.

  1. Review
  2. Review
  3. Frontiers in immunology · 2026
    Article
  4. Article
  5. Analysis of essential genes inJournal of bacteriology · 2025
    Article
  6. Cryo-EM structure and polar assembly of the PS2 S-layer ofProceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  7. Article
  8. Analysis of Essential Genes inbioRxiv : the preprint server for biology · 2025
    Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. mSphere · 2024
    Article
  15. Clostridioides difficile Biofilm.Advances in experimental medicine and biology · 2024
    Article
  16. Review
  17. Article
  18. Article
  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

7 authors at 3 institutions in 2 countries.

Stephanie E WillingCentre for Molecular Bacteriology and Infection, Department of Life Sciences, Imperial College London, London, SW7 2AZ, UK.
Thomas Candela
Helen Alexandra Shaw
Zoe Seager
Stéphane Mesnage
Robert P Fagan
Neil F Fairweather
Imperial College London · GBUniversity of Sheffield · GBUniversité Paris-Sud · FR

Funding

Biotechnology and Biological Sciences Research CouncilMedical Research Council G0800170
6 · The paper itself

Abstract

Gram-positive surface proteins can be covalently or non-covalently anchored to the cell wall and can impart important properties on the bacterium in respect of cell envelope organisation and interaction with the environment. We describe here a mechanism of protein anchoring involving tandem CWB2 motifs found in a large number of cell wall proteins in the Firmicutes. In the Clostridium difficile cell wall protein family, we show the three tandem repeats of the CWB2 motif are essential for correct anchoring to the cell wall. CWB2 repeats are non-identical and cannot substitute for each other, as shown by the secretion into the culture supernatant of proteins containing variations in the patterns of repeats. A conserved Ile Leu Leu sequence within the CWB2 repeats is essential for correct anchoring, although a preceding proline residue is dispensable. We propose a likely genetic locus encoding synthesis of the anionic polymer PSII and, using RNA knock-down of key genes, reveal subtle effects on cell wall composition. We show that the anionic polymer PSII binds two cell wall proteins, SlpA and Cwp2, and these interactions require the CWB2 repeats, defining a new mechanism of protein anchoring in Gram-positive bacteria.

Indexed as

Amino Acid MotifsCell WallClostridioides difficileGene Knockdown TechniquesMembrane ProteinsPolysaccharides, BacterialProtein BindingRepetitive Sequences, Amino AcidMembrane ProteinsPolysaccharides, Bacterial

Identifiers

PMID25649385
PMCPMC4973711
OpenAlexW1509962568

What OpenQuestion holds

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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.