Evidence map›Paper›PMID 33033258›Full record

ArticleNature communications2020

CryoEM structure of the type IVa pilus secretin required for natural competence in Vibrio cholerae.

Sara J Weaver, Davi R Ortega, Matthew H Sazinsky, Triana N Dalia, Ankur B Dalia, Grant J Jensen

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in Nature communications, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
3.8field-weighted citation impact, top 7% 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

22 citing papers in PubMed, 38 citations in OpenAlex.

  1. Structural modeling reveals the mechanism of motor ATPase coordination during type IV pilus retraction.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  2. Article
  3. Article
  4. mBio · 2026
    Article
  5. Article
  6. Article
  7. Integrative Structure and Function of thebioRxiv : the preprint server for biology · 2025
    Article
  8. Article
  9. Article
  10. SbcB facilitates natural transformation inJournal of bacteriology · 2025
    Article
  11. Type IV pili ofEcoSal Plus · 2024
    Review
  12. Article
  13. Diversification ofMicroorganisms · 2024
    Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 1 country.

Sara J WeaverDivision of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd, Pasadena, CA, 91125, USA.ORCID http://orcid.org/0000-0001-7753-6215
Davi R OrtegaDivision of Biology and Biological Engineering and Howard Hughes Medical Institute, California Institute of Technology, 1200 E. California Blvd, Pasadena, CA, 91125, USA.ORCID http://orcid.org/0000-0002-8344-2335
Matthew H SazinskyDepartment of Chemistry, Pomona College, 333N. College Way, Claremont, CA, 91711, USA.ORCID http://orcid.org/0000-0001-7550-5116
Triana N DaliaDepartment of Biology, Indiana University, 107S. Indiana Avenue, Bloomington, IN, 47405, USA.ORCID http://orcid.org/0000-0001-7614-1377
Ankur B DaliaDepartment of Biology, Indiana University, 107S. Indiana Avenue, Bloomington, IN, 47405, USA.ORCID http://orcid.org/0000-0003-2203-1230
Grant J JensenDivision of Biology and Biological Engineering and Howard Hughes Medical Institute, California Institute of Technology, 1200 E. California Blvd, Pasadena, CA, 91125, USA. jensen@caltech.edu.ORCID http://orcid.org/0000-0003-1556-4864
California Institute of Technology · USIndiana University Bloomington · USPomona College · US

Funding

Structure and Function of Pathogenesis-Associated Bacterial Structures by Electron CryotomographyR01AI127401 · NIAID · CALIFORNIA INSTITUTE OF TECHNOLOGY · PI GRANT J JENSEN · 2016 to 2026
$3.9M
Mechanisms and regulation of horizontal gene transfer by natural transformation in Vibrio choleraeR35GM128674 · NIGMS · TRUSTEES OF INDIANA UNIVERSITY · PI Ankur Dalia · 2018 to 2026
$3.8M
Howard Hughes Medical InstituteNIAID NIH HHS R01 AI127401NIGMS NIH HHS R35 GM128674
6 · The paper itself

Abstract

Natural transformation is the process by which bacteria take up genetic material from their environment and integrate it into their genome by homologous recombination. It represents one mode of horizontal gene transfer and contributes to the spread of traits like antibiotic resistance. In Vibrio cholerae, a type IVa pilus (T4aP) is thought to facilitate natural transformation by extending from the cell surface, binding to exogenous DNA, and retracting to thread this DNA through the outer membrane secretin, PilQ. Here, we use a functional tagged allele of VcPilQ purified from native V. cholerae cells to determine the cryoEM structure of the VcPilQ secretin in amphipol to ~2.7 Å. We use bioinformatics to examine the domain architecture and gene neighborhood of T4aP secretins in Proteobacteria in comparison with VcPilQ. This structure highlights differences in the architecture of the T4aP secretin from the type II and type III secretion system secretins. Based on our cryoEM structure, we design a series of mutants to reversibly regulate VcPilQ gate dynamics. These experiments support the idea of VcPilQ as a potential druggable target and provide insight into the channel that DNA likely traverses to promote the spread of antibiotic resistance via horizontal gene transfer by natural transformation.

Indexed as

Cryoelectron MicroscopyBacterial Secretion SystemsCysteineFimbriae, BacterialMembrane ProteinsModels, MolecularMutationPhylogenyProtein DomainsSecretinTransformation, BacterialVibrio choleraeBacterial Secretion SystemsCysteineMembrane ProteinsSecretin

Identifiers

PMID33033258
PMCPMC7545093
OpenAlexW3092186467

What OpenQuestion holds

Textmetadata
LicenceCC BY
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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.