Evidence map›Paper›PMID 35951533›Full record

ReviewPLoS pathogens2022

Molecular architecture of bacterial type IV secretion systems.

Michael J Sheedlo, Melanie D Ohi, D Borden Lacy, Timothy L Cover

Open access · goldAbstract readReview
In one paragraph

Review in PLoS pathogens, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed
13.6field-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

52 citing papers in PubMed, 64 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Carbapenem-ResistantAntibiotics (Basel, Switzerland) · 2026
    Review
  6. Review
  7. Structural and functional insights into Pseudomonas aeruginosa's secretion systems 1-6: regulation, role in microbial keratitis and drug targets.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2026
    Review
  8. The R plasmid pRAS2 in the fish pathogenFrontiers in microbiology · 2026
    Article
  9. Article
  10. In situ structures of theProceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  11. Article
  12. OptimizedMicrobiology spectrum · 2025
    Article
  13. Species-specific components of theInfection and immunity · 2025
    Article
  14. Experimental Approaches to Visualize Effector Protein Translocation During Host-Pathogen Interactions.BioEssays : news and reviews in molecular, cellular and developmental biology · 2025
    Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. ThemicroLife · 2025
    Review
  20. 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

4 authors at 4 institutions in 1 country.

Michael J SheedloDepartment of Pharmacology, University of Minnesota, Minneapolis, Minnesota, United States of America.
Melanie D OhiDepartment of Cell and Developmental Biology, University of Michigan, Ann Arbor, Michigan, United States of America.
D Borden LacyDepartment of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America.
Timothy L CoverDepartment of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America.ORCID 0000-0001-8503-002X
University of Michigan · USUniversity of Minnesota · USVanderbilt University · USVA Tennessee Valley Healthcare System · US

Funding

Role of Iron and B-Catenin Activation in Gastric CarcinogenesisP01CA116087 · NCI · VANDERBILT UNIVERSITY MEDICAL CENTER · PI RICHARD M. PEEK · 2009 to 2026
$27.5M
Structure-function analysis of H. pylori VacAR01AI039657 · NIAID · VANDERBILT UNIVERSITY MEDICAL CENTER · PI TIMOTHY L COVER · 1996 to 2026
$8.3M
Type IV Protein Secretion in Helicobacter pyloriR01AI118932 · NIAID · VANDERBILT UNIVERSITY MEDICAL CENTER · PI COVER, TIMOTHY L, OHI, MELANIE DIANE · 2016 to 2025
$6.7M
Exploring protein translocation by the Legionella pneumophila Dot/Icm Type IV Section SystemR21AI164651 · NIAID · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI OHI, MELANIE DIANE · 2021 to 2022
$429k
"Pathogenesis of Helicobacter pylori Infection"I01BX004447 · VA · VETERANS HEALTH ADMINISTRATION · PI TIMOTHY L COVER · 2019 to 2026
–
BLRD VA I01 BX004447NCI NIH HHS P01 CA116087NIAID NIH HHS R01 AI039657NIAID NIH HHS R01 AI118932NIAID NIH HHS R21 AI164651
6 · The paper itself

Abstract

Bacterial type IV secretion systems (T4SSs) are a versatile group of nanomachines that can horizontally transfer DNA through conjugation and deliver effector proteins into a wide range of target cells. The components of T4SSs in gram-negative bacteria are organized into several large subassemblies: an inner membrane complex, an outer membrane core complex, and, in some species, an extracellular pilus. Cryo-electron tomography has been used to define the structures of T4SSs in intact bacteria, and high-resolution structural models are now available for isolated core complexes from conjugation systems, the Xanthomonas citri T4SS, the Helicobacter pylori Cag T4SS, and the Legionella pneumophila Dot/Icm T4SS. In this review, we compare the molecular architectures of these T4SSs, focusing especially on the structures of core complexes. We discuss structural features that are shared by multiple T4SSs as well as evolutionary strategies used for T4SS diversification. Finally, we discuss how structural variations among T4SSs may confer specialized functional properties.

Indexed as

Helicobacter pyloriLegionella pneumophilaBacterial ProteinsBacterial Secretion SystemsElectron Microscope TomographyType IV Secretion SystemsBacterial ProteinsBacterial Secretion SystemsType IV Secretion Systems

Identifiers

PMID35951533
PMCPMC9371333
OpenAlexW4290973203

What OpenQuestion holds

Textmetadata
LicenceCC0
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.