Evidence map›Paper›PMID 23950727›Full record

ArticlePLoS genetics2013

Global analysis of the sporulation pathway of Clostridium difficile.

Kelly A Fimlaid, Jeffrey P Bond, Kristin C Schutz, Emily E Putnam, Jacqueline M Leung, Trevor D Lawley, Aimee Shen

Open access · goldAbstract read
In one paragraph

Article in PLoS genetics, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 150 papers.

0numbers the graph read from it
0cells of the map it votes in
150citing papers in PubMed
10.8field-weighted citation impact, top 1% 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

150 citing papers in PubMed, 237 citations in OpenAlex.

  1. Disruption ofJournal of medical microbiology · 2026
    Article
  2. MclX modulates the process of mother cell lysis by SpoIIID inApplied and environmental microbiology · 2026
    Article
  3. Article
  4. Article
  5. Review
  6. Journal of bacteriology · 2026
    Article
  7. Article
  8. Article
  9. Characterization of a hypersporulating strain derivativebioRxiv : the preprint server for biology · 2025
    Article
  10. Article
  11. The emerging view on the roles of butyrate inInfection and immunity · 2025
    Review
  12. Article
  13. Article
  14. Disulphide bond-forming enzymes in clostridial species.Microbiology (Reading, England) · 2025
    Article
  15. Article
  16. Proline Stickland fermentation supportsApplied and environmental microbiology · 2025
    Article
  17. Article
  18. Article
  19. Article
  20. Article

90 more citing papers are in PubMed but not listed here.

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 2 institutions in 2 countries.

Kelly A FimlaidDepartment of Microbiology and Molecular Genetics, University of Vermont, Burlington, Vermont, USA.
Jeffrey P Bond
Kristin C Schutz
Emily E Putnam
Jacqueline M Leung
Trevor D Lawley
Aimee Shen
University of Vermont · USWellcome Sanger Institute · GB

Funding

VERMONT IMMUNOBIOLOIGY/ INFECTIOUS DISEASES CENTERP20RR021905 · NCRR · UNIVERSITY OF VERMONT & ST AGRIC COLLEGE · PI MATRAJT, MARIANA L · 2006 to 2011
$14.5M
Vermont Immunobioloigy/ Infectious Diseases CenterP20GM103496 · NIGMS · UNIVERSITY OF VERMONT & ST AGRIC COLLEGE · PI BUDD, RALPH C · 2012 to 2015
$8.7M
Center for Neuroscience ExcellenceP30GM103498 · NIGMS · UNIVERSITY OF VERMONT & ST AGRIC COLLEGE · PI PARSONS, RODNEY L · 2012 to 2015
$4.3M
Vermont Immunology/Infectious Diseases Training GrantT32AI055402 · NIAID · UNIVERSITY OF VERMONT &ST AGRIC COLLEGE · PI GARY E WARD · 2005 to 2026
$2.7M
Chemically Interrogating Clostridium difficile Glucosylating Toxin ActivationR00GM092934 · NIGMS · UNIVERSITY OF VERMONT & ST AGRIC COLLEGE · PI SHEN, AIMEE · 2011 to 2013
$724k
NCRR NIH HHS P20 RR021905NCRR NIH HHS P20RR021905NIAID NIH HHS T32 AI055402NIGMS NIH HHS P20 GM103496NIGMS NIH HHS P30 GM103498NIGMS NIH HHS R00 GM092934NIGMS NIH HHS R00GM092934
6 · The paper itself

Abstract

The Gram-positive, spore-forming pathogen Clostridium difficile is the leading definable cause of healthcare-associated diarrhea worldwide. C. difficile infections are difficult to treat because of their frequent recurrence, which can cause life-threatening complications such as pseudomembranous colitis. The spores of C. difficile are responsible for these high rates of recurrence, since they are the major transmissive form of the organism and resistant to antibiotics and many disinfectants. Despite the importance of spores to the pathogenesis of C. difficile, little is known about their composition or formation. Based on studies in Bacillus subtilis and other Clostridium spp., the sigma factors σ(F), σ(E), σ(G), and σ(K) are predicted to control the transcription of genes required for sporulation, although their specific functions vary depending on the organism. In order to determine the roles of σ(F), σ(E), σ(G), and σ(K) in regulating C. difficile sporulation, we generated loss-of-function mutations in genes encoding these sporulation sigma factors and performed RNA-Sequencing to identify specific sigma factor-dependent genes. This analysis identified 224 genes whose expression was collectively activated by sporulation sigma factors: 183 were σ(F)-dependent, 169 were σ(E)-dependent, 34 were σ(G)-dependent, and 31 were σ(K)-dependent. In contrast with B. subtilis, C. difficile σ(E) was dispensable for σ(G) activation, σ(G) was dispensable for σ(K) activation, and σ(F) was required for post-translationally activating σ(G). Collectively, these results provide the first genome-wide transcriptional analysis of genes induced by specific sporulation sigma factors in the Clostridia and highlight that diverse mechanisms regulate sporulation sigma factor activity in the Firmicutes.

Indexed as

Bacillus subtilisClostridioides difficileDiarrheaGene Expression Regulation, BacterialGenome, BacterialHumansMutationSequence Analysis, RNASigma FactorSpores, BacterialTranscription, GeneticSigma Factorsporulation-specific sigma factors

Identifiers

PMID23950727
PMCPMC3738446
OpenAlexW2075809466

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.