Evidence map›Paper›PMID 22361030›Full record

ArticleJournal of molecular biology2012

Structure of the Vibrio cholerae Type IVb Pilus and stability comparison with the Neisseria gonorrhoeae type IVa pilus.

Juliana Li, Edward H Egelman, Lisa Craig

Open access · greenAbstract readComparative Study
In one paragraph

Article in Journal of molecular biology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
4.7field-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

45 citing papers in PubMed, 67 citations in OpenAlex.

  1. Sources of non-Arrhenius electron transport in bacterial nanowires.Physical chemistry chemical physics : PCCP · 2026
    Article
  2. Article
  3. Integrative Structure and Function of thebioRxiv : the preprint server for biology · 2025
    Article
  4. Review
  5. Type IV pili ofEcoSal Plus · 2024
    Review
  6. Understanding a Core Pilin of the Type IVa Pili ofJournal of microbiology and biotechnology · 2024
    Article
  7. Tad and toxin-coregulated pilus structures reveal unexpected diversity in bacterial type IV pili.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  8. Article
  9. Article
  10. Article
  11. Motor-independent retraction of type IV pili is governed by an inherent property of the pilus filament.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  12. The minor pilin PilV provides a conserved adhesion site throughout the antigenically variable meningococcal type IV pilus.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  13. Article
  14. The Role of Minor Pilins in Assembly and Function of the Competence Pilus ofFrontiers in cellular and infection microbiology · 2021
    Article
  15. Review
  16. Article
  17. Article
  18. TheThe Journal of biological chemistry · 2019
    Article
  19. Review
  20. Direct Extracellular Electron Transfer of theBioMed research international · 2019
    Article
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

3 authors at 2 institutions in 2 countries.

Juliana LiMolecular Biology and Biochemistry Department, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada.
Edward H Egelman
Lisa Craig
Simon Fraser University · CAUniversity of Virginia Medical Center · US

Funding

Methods for the Analysis of Helical Macromolecular ComplexesR01EB001567 · NIBIB · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI EGELMAN, EDWARD H. · 2003 to 2014
$3.6M
Structure and Assembly of Type IV Pili &Related SystemsR01AI022160 · NIAID · SCRIPPS RESEARCH INSTITUTE, THE · PI TAINER, JOHN A. · 1985 to 2009
$3.2M
CIHR RGPIN312152NIAID NIH HHS AI022160NIAID NIH HHS R01 AI022160NIBIB NIH HHS EB001567NIBIB NIH HHS R01 EB001567
6 · The paper itself

Abstract

Type IV pili are multifunctional filaments displayed on many bacterial pathogens. Members of the Type IVa pilus subclass are found on a diverse group of human pathogens, whereas Type IVb pili are found almost exclusively on enteric bacteria. The Type IVa and IVb subclasses are distinguished by differences in the pilin subunits, including the fold of the globular domain. To understand the implications of the distinct pilin folds, we compared the stabilities of pilin subunits and pilus filaments for the Type IVa GC pilus from Neisseria gonorrhoeae and the Type IVb toxin-coregulated pilus (TCP) from Vibrio cholerae. We show that while recombinant TCP pilin is more stable than GC pilin, the GC pili are more resistant to proteolysis, heat and chemical denaturation than TCP, remaining intact in 8 M urea. To understand these differences, we determined the TCP structure by electron microscopy and three-dimensional image reconstruction. TCP have an architecture similar to that of GC pili, with subunits arranged in a right-handed 1-start helix and related by an 8.4-Å axial rise and a 96.8° azimuthal rotation. However, the TCP subunits are not as tightly packed as GC pilins, and the distinct Type IVb pilin fold exposes a segment of the α-helical core of TCP. Hydrophobic interactions dominate for both pilus subtypes, but base stacking by aromatic residues conserved among the Type IVa pilins may contribute to GC pilus stability. The extraordinary stability of GC pili may represent an adaptation of the Type IVa pili to harsh environments and the need to retract against external forces.

Indexed as

Fimbriae, BacterialFimbriae ProteinsImaging, Three-DimensionalModels, MolecularNeisseria gonorrhoeaeProtein StabilityProtein Structure, SecondaryVibrio choleraeFimbriae Proteins

Identifiers

PMID22361030
PMCPMC3389824
OpenAlexW1974514157

What OpenQuestion holds

Textmetadata
LicenceTDM
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.