Evidence map›Paper›PMID 38011558›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2023

Tad and toxin-coregulated pilus structures reveal unexpected diversity in bacterial type IV pili.

Ravi R Sonani, Juan Carlos Sanchez, Joseph K Baumgardt, Shivani Kundra, Elizabeth R Wright, Lisa Craig, Edward H Egelman

Erratum issuedOpen access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2023. 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 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
9.1field-weighted citation impact, top 2% 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

24 citing papers in PubMed, 29 citations in OpenAlex.

  1. Article
  2. Review
  3. mBio · 2026
    Article
  4. Review
  5. Article
  6. International journal of molecular sciences · 2025
    Article
  7. Stimulation of themBio · 2025
    Article
  8. Electron Cryo-Tomography Reveals thebioRxiv : the preprint server for biology · 2025
    Article
  9. Article
  10. Integrative Structure and Function of thebioRxiv : the preprint server for biology · 2025
    Article
  11. Article
  12. Article
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  15. Article
  16. Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 2 countries.

Ravi R SonaniDepartment of Biochemistry and Molecular Genetics, University of Virginia, Charlottesville, VA 22903.
Juan Carlos SanchezDepartment of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706.
Joseph K BaumgardtDepartment of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706.
Shivani KundraDepartment of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada.
Elizabeth R WrightDepartment of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706.ORCID 0000-0003-0712-9475
Lisa CraigDepartment of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada.ORCID 0000-0001-8515-9915
Edward H EgelmanDepartment of Biochemistry and Molecular Genetics, University of Virginia, Charlottesville, VA 22903.ORCID 0000-0003-4844-5212
University of Wisconsin–Madison · USSimon Fraser University · CAUniversity of Virginia · US

Funding

Women's Oncology Program - WONP30CA044579 · NCI · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI Thomas P. Loughran · 1987 to 2026
$72.1M
The Midwest Center for Cryo-Electron TomographyU24GM139168 · NIGMS · UNIVERSITY OF WISCONSIN-MADISON · PI WRIGHT, ELIZABETH R · 2020 to 2025
$41.7M
Cryo-EM of Helical Protein and Nucleoprotein Polymers at Near Atomic ResolutionR35GM122510 · NIGMS · UNIVERSITY OF VIRGINIA · PI EDWARD H. EGELMAN · 2017 to 2026
$7.3M
Biotechnology Training ProgramT32GM135066 · NIGMS · UNIVERSITY OF WISCONSIN-MADISON · PI SCOTT M. COYLE, BRIAN G FOX · 2020 to 2026
$7.0M
Structure and Function of Prokaryotic Appendages by Cryo-Electron TomographyR01GM104540 · NIGMS · UNIVERSITY OF WISCONSIN-MADISON · PI WRIGHT, ELIZABETH R · 2013 to 2017
$1.4M
NCI NIH HHS P30 CA044579NIGMS NIH HHS R01 GM104540NIGMS NIH HHS R35 GM122510NIGMS NIH HHS T32 GM135066NIGMS NIH HHS U24 GM139168
6 · The paper itself

Abstract

Type IV pili (T4P) are ubiquitous in both bacteria and archaea. They are polymers of the major pilin protein, which has an extended and protruding N-terminal helix, α1, and a globular C-terminal domain. Cryo-EM structures have revealed key differences between the bacterial and archaeal T4P in their C-terminal domain structure and in the packing and continuity of α1. This segment forms a continuous α-helix in archaeal T4P but is partially melted in all published bacterial T4P structures due to a conserved helix breaking proline at position 22. The tad (tight adhesion) T4P are found in both bacteria and archaea and are thought to have been acquired by bacteria through horizontal transfer from archaea. Tad pilins are unique among the T4 pilins, being only 40 to 60 residues in length and entirely lacking a C-terminal domain. They also lack the Pro22 found in all high-resolution bacterial T4P structures. We show using cryo-EM that the bacterial tad pilus from

Indexed as

Fimbriae, BacterialFimbriae ProteinsArchaeaBacteriaFimbriae Proteinsbacterial filamentscryo-EMhelical polymers

Identifiers

PMID38011558
PMCPMC10710030
OpenAlexW4389042099

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.