Evidence map›Paper›PMID 23204167›Full record

ArticleThe Journal of infectious diseases2013

Recombinational switching of the Clostridium difficile S-layer and a novel glycosylation gene cluster revealed by large-scale whole-genome sequencing.

Kate E Dingle, Xavier Didelot, M Azim Ansari, David W Eyre, Alison Vaughan, David Griffiths, Camilla L C Ip, Elizabeth M Batty, Tanya Golubchik, Rory Bowden and 7 more

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of infectious diseases, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed
5.1field-weighted citation impact, top 4% 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

56 citing papers in PubMed, 95 citations in OpenAlex.

  1. The prevalence and molecular epidemiology ofEmerging microbes & infections · 2026
    Observational
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  16. Microbiology (Reading, England) · 2023
    Review
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  19. TheMicrobiology spectrum · 2022
    Article
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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

17 authors at 6 institutions in 2 countries.

Kate E DingleNuffield Department of Clinical Medicine, Oxford Biomedical Research Centre, John Radcliffe Hospital, UK. kate.dingle@ndcls.ox.ac.uk
Xavier Didelot
M Azim Ansari
David W Eyre
Alison Vaughan
David Griffiths
Camilla L C Ip
Elizabeth M Batty
Tanya Golubchik
Rory Bowden
Keith A Jolley
Derek W Hood
Warren N Fawley
A Sarah Walker
Timothy E Peto
Mark H Wilcox
Derrick W Crook
John Radcliffe Hospital · GBNational Institute for Health Research · GBNuffield Health · GBOxford Biomedical Research · USUniversity of Leeds · GBUniversity of Oxford · GB

Funding

Biotechnology and Biological Sciences Research CouncilDepartment of Health DRF-2010-03-40Medical Research Council G0600719Medical Research Council MR/K010174/1Wellcome TrustWellcome Trust 087646/Z/08/Z
6 · The paper itself

Abstract

backgroundClostridium difficile is a major cause of nosocomial diarrhea, with 30-day mortality reaching 30%. The cell surface comprises a paracrystalline proteinaceous S-layer encoded by the slpA gene within the cell wall protein (cwp) gene cluster. Our purpose was to understand the diversity and evolution of slpA and nearby genes also encoding immunodominant cell surface antigens.

methodsWhole-genome sequences were determined for 57 C. difficile isolates representative of the population structure and different clinical phenotypes. Phylogenetic analyses were performed on their genomic region (>63 kb) spanning the cwp cluster.

resultsGenetic diversity across the cwp cluster peaked within slpA, cwp66 (adhesin), and secA2 (secretory translocase). These genes formed a 10-kb cassette, of which 12 divergent variants were found. Homologous recombination involving this cassette caused it to associate randomly with genotype. One cassette contained a novel insertion (length, approximately 24 kb) that resembled S-layer glycosylation gene clusters.

conclusionsGenetic exchange of S-layer cassettes parallels polysaccharide capsular switching in other species. Both cause major antigenic shifts, while the remainder of the genome is unchanged. C. difficile genotype is therefore not predictive of antigenic type. S-layer switching and immune escape could help explain temporal and geographic variation in C. difficile epidemiology and may inform genotyping and vaccination strategies.

Indexed as

Genome, BacterialRecombination, GeneticSequence Analysis, DNABacterial ProteinsClostridioides difficileEvolution, MolecularGenetic VariationGlycosylationHumansMolecular Sequence DataMultigene FamilyPhylogenyBacterial Proteinssurface layer protein A, Bacteria

Identifiers

PMID23204167
PMCPMC3549603
OpenAlexW2135742507

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.