Evidence map›Paper›PMID 26460929›Full record

ArticlePLoS genetics2015

The Type VI Secretion TssEFGK-VgrG Phage-Like Baseplate Is Recruited to the TssJLM Membrane Complex via Multiple Contacts and Serves As Assembly Platform for Tail Tube/Sheath Polymerization.

Yannick R Brunet, Abdelrahim Zoued, Frédéric Boyer, Badreddine Douzi, Eric Cascales

Open access · goldAbstract read
In one paragraph

Article in PLoS genetics, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 114 papers.

0numbers the graph read from it
0cells of the map it votes in
114citing papers in PubMed
14.5field-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

114 citing papers in PubMed, 185 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Article
  5. Review
  6. Review
  7. TseCurrent research in microbial sciences · 2026
    Article
  8. The SPI-20 and SPI-21 T6SS gene clusters fromFrontiers in microbiology · 2026
    Article
  9. The SPI-6 T6SS gene cluster fromFrontiers in microbiology · 2026
    Article
  10. Article
  11. Deciphering theJournal of bacteriology · 2025
    Review
  12. Biology · 2025
    Review
  13. Review
  14. Review
  15. Article
  16. Article
  17. Article
  18. mBio · 2025
    Article
  19. Review
  20. Article

54 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

5 authors at 3 institutions in 1 country.

Yannick R BrunetLaboratoire d'Ingénierie des Systèmes Macromoléculaires, Institut de Microbiologie de la Méditerranée, Aix-Marseille Université, CNRS-UMR 7255, Marseille, France.
Abdelrahim ZouedLaboratoire d'Ingénierie des Systèmes Macromoléculaires, Institut de Microbiologie de la Méditerranée, Aix-Marseille Université, CNRS-UMR 7255, Marseille, France.
Frédéric BoyerLaboratoire d'Ecologie Alpine, Université Joseph Fourier, Grenoble, France.
Badreddine DouziLaboratoire d'Ingénierie des Systèmes Macromoléculaires, Institut de Microbiologie de la Méditerranée, Aix-Marseille Université, CNRS-UMR 7255, Marseille, France; Architecture et Fonction des Macromolécules Biologiques, Aix-Marseille Université, CNRS-UMR 7257, Marseille, France.
Eric CascalesLaboratoire d'Ingénierie des Systèmes Macromoléculaires, Institut de Microbiologie de la Méditerranée, Aix-Marseille Université, CNRS-UMR 7255, Marseille, France.
Aix-Marseille Université · FRCentre National de la Recherche Scientifique · FRUniversité Joseph Fourier · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The Type VI secretion system (T6SS) is a widespread weapon dedicated to the delivery of toxin proteins into eukaryotic and prokaryotic cells. The 13 T6SS subunits assemble a cytoplasmic contractile structure anchored to the cell envelope by a membrane-spanning complex. This structure is evolutionarily, structurally and functionally related to the tail of contractile bacteriophages. In bacteriophages, the tail assembles onto a protein complex, referred to as the baseplate, that not only serves as a platform during assembly of the tube and sheath, but also triggers the contraction of the sheath. Although progress has been made in understanding T6SS assembly and function, the composition of the T6SS baseplate remains mostly unknown. Here, we report that six T6SS proteins-TssA, TssE, TssF, TssG, TssK and VgrG-are required for proper assembly of the T6SS tail tube, and a complex between VgrG, TssE,-F and-G could be isolated. In addition, we demonstrate that TssF and TssG share limited sequence homologies with known phage components, and we report the interaction network between these subunits and other baseplate and tail components. In agreement with the baseplate being the assembly platform for the tail, fluorescence microscopy analyses of functional GFP-TssF and TssK-GFP fusion proteins show that these proteins assemble stable and static clusters on which the sheath polymerizes. Finally, we show that recruitment of the baseplate to the apparatus requires initial positioning of the membrane complex and contacts between TssG and the inner membrane TssM protein.

Indexed as

BacteriophagesContractile ProteinsCytoplasmEscherichia coliEscherichia coli ProteinsMembrane ProteinsMicroscopy, FluorescenceMultiprotein ComplexesSequence Homology, Amino AcidType VI Secretion SystemsViral ProteinsViral Tail ProteinsContractile ProteinsEscherichia coli Proteinsgene 5 protein, Enterobacteria phage T4Membrane ProteinsMultiprotein ComplexesType VI Secretion SystemsViral ProteinsViral Tail Proteins

Identifiers

PMID26460929
PMCPMC4604203
OpenAlexW1901472965

What OpenQuestion holds

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LicenceCC BY
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.