Evidence map›Paper›PMID 30177742›Full record

ArticleNature microbiology2018

Mechanism of loading and translocation of type VI secretion system effector Tse6.

Dennis Quentin, Shehryar Ahmad, Premy Shanthamoorthy, Joseph D Mougous, John C Whitney, Stefan Raunser

Open access · greenAbstract read
In one paragraph

Article in Nature microbiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed
10.3field-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

66 citing papers in PubMed, 117 citations in OpenAlex.

  1. Review
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  11. TseCurrent research in microbial sciences · 2026
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  12. Zoological research · 2025
    Article
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  15. Review
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  17. Science advances · 2025
    Article
  18. Review
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6 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

6 authors at 3 institutions in 3 countries.

Dennis QuentinDepartment of Structural Biochemistry, Max Planck Institute of Molecular Physiology, Dortmund, Germany.
Shehryar AhmadMichael DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, Canada.
Premy ShanthamoorthyMichael DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, Canada.
Joseph D MougousDepartment of Microbiology, University of Washington, Seattle, WA, USA.ORCID http://orcid.org/0000-0002-5417-4861
John C WhitneyMichael DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, Canada. jwhitney@mcmaster.ca.ORCID http://orcid.org/0000-0002-4517-8836
Stefan RaunserDepartment of Structural Biochemistry, Max Planck Institute of Molecular Physiology, Dortmund, Germany. stefan.raunser@mpi-dortmund.mpg.de.ORCID http://orcid.org/0000-0001-9373-3016
McMaster University · CAMax Planck Institute of Molecular Physiology · DEHoward Hughes Medical Institute · US

Funding

Type VI secretion effectors and interbacterial competition in vivoR01AI080609 · NIAID · YALE UNIVERSITY · PI MOUGOUS, JOSEPH DAVID · 2009 to 2025
$6.7M
Howard Hughes Medical InstituteNIAID NIH HHS R01 AI080609
6 · The paper itself

Abstract

The type VI secretion system (T6SS) primarily functions to mediate antagonistic interactions between contacting bacterial cells, but also mediates interactions with eukaryotic hosts. This molecular machine secretes antibacterial effector proteins by undergoing cycles of extension and contraction; however, how effectors are loaded into the T6SS and subsequently delivered to target bacteria remains poorly understood. Here, using electron cryomicroscopy, we analysed the structures of the Pseudomonas aeruginosa effector Tse6 loaded onto the T6SS spike protein VgrG1 in solution and embedded in lipid nanodiscs. In the absence of membranes, Tse6 stability requires the chaperone EagT6, two dimers of which interact with the hydrophobic transmembrane domains of Tse6. EagT6 is not directly involved in Tse6 delivery but is crucial for its loading onto VgrG1. VgrG1-loaded Tse6 spontaneously enters membranes and its toxin domain translocates across a lipid bilayer, indicating that effector delivery by the T6SS does not require puncturing of the target cell inner membrane by VgrG1. Eag chaperone family members from diverse Proteobacteria are often encoded adjacent to putative toxins with predicted transmembrane domains and we therefore anticipate that our findings will be generalizable to numerous T6SS-exported membrane-associated effectors.

Indexed as

Bacterial ProteinsBacterial ToxinsCell MembraneCryoelectron MicroscopyLipid BilayersModels, MolecularMolecular ChaperonesMutationProtein DomainsProtein StabilityPseudomonas aeruginosaType VI Secretion SystemsBacterial ProteinsBacterial ToxinsLipid BilayersMolecular ChaperonesType VI Secretion Systems

Identifiers

PMID30177742
PMCPMC6488228
OpenAlexW2889246734

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.