Evidence map›Paper›PMID 35165385›Full record

ArticleNature microbiology2022

Identification and structure of an extracellular contractile injection system from the marine bacterium Algoriphagus machipongonensis.

Jingwei Xu, Charles F Ericson, Yun-Wei Lien, Florentine U N Rutaganira, Fabian Eisenstein, Miki Feldmüller, Nicole King, Martin Pilhofer

Erratum issuedOpen access · hybridAbstract read
In one paragraph

Article in Nature microbiology, 2022. 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 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
8.1field-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

36 citing papers in PubMed, 53 citations in OpenAlex.

  1. Article
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  6. Article
  7. Article
  8. Review
  9. Article
  10. The spike tip protein of bacteriophage T4.bioRxiv : the preprint server for biology · 2025
    Article
  11. Article
  12. Article
  13. International journal of systematic and evolutionary microbiology · 2025
    Article
  14. Review
  15. Journal of virology · 2025
    Article
  16. Review
  17. Decoding resistance in the age of T6SS warfare.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 3 institutions in 3 countries.

Jingwei Xu *Department of Biology, Institute of Molecular Biology & Biophysics, Eidgenössische Technische Hochschule Zürich, Otto-Stern-Weg 5, Zürich, Switzerland.ORCID http://orcid.org/0000-0003-1833-1513
Charles F Ericson *Department of Biology, Institute of Molecular Biology & Biophysics, Eidgenössische Technische Hochschule Zürich, Otto-Stern-Weg 5, Zürich, Switzerland.
Yun-Wei LienDepartment of Biology, Institute of Molecular Biology & Biophysics, Eidgenössische Technische Hochschule Zürich, Otto-Stern-Weg 5, Zürich, Switzerland.ORCID http://orcid.org/0000-0003-2455-5273
Florentine U N RutaganiraHoward Hughes Medical Institute and Department of Molecular and Cell Biology, University of California, Berkeley, CA, USA.ORCID http://orcid.org/0000-0001-5587-1872
Fabian EisensteinDepartment of Biology, Institute of Molecular Biology & Biophysics, Eidgenössische Technische Hochschule Zürich, Otto-Stern-Weg 5, Zürich, Switzerland.ORCID http://orcid.org/0000-0002-1261-7126
Miki FeldmüllerDepartment of Biology, Institute of Molecular Biology & Biophysics, Eidgenössische Technische Hochschule Zürich, Otto-Stern-Weg 5, Zürich, Switzerland.
Nicole KingHoward Hughes Medical Institute and Department of Molecular and Cell Biology, University of California, Berkeley, CA, USA.
Martin PilhoferDepartment of Biology, Institute of Molecular Biology & Biophysics, Eidgenössische Technische Hochschule Zürich, Otto-Stern-Weg 5, Zürich, Switzerland. pilhofer@biol.ethz.ch.ORCID http://orcid.org/0000-0002-3649-3340
ETH Zurich · CHHoward Hughes Medical Institute · USBoard of the Swiss Federal Institutes of Technology · CH

Funding

Howard Hughes Medical Institute
6 · The paper itself

Abstract

Contractile injection systems (CISs) are phage tail-like nanomachines, mediating bacterial cell-cell interactions as either type VI secretion systems (T6SSs) or extracellular CISs (eCISs). Bioinformatic studies uncovered a phylogenetic group of hundreds of putative CIS gene clusters that are highly diverse and widespread; however, only four systems have been characterized. Here we studied a putative CIS gene cluster in the marine bacterium Algoriphagus machipongonensis. Using an integrative approach, we show that the system is compatible with an eCIS mode of action. Our cryo-electron microscopy structure revealed several features that differ from those seen in other CISs: a 'cap adaptor' located at the distal end, a 'plug' exposed to the tube lumen, and a 'cage' formed by massive extensions of the baseplate. These elements are conserved in other CISs, and our genetic tools identified that they are required for assembly, cargo loading and function. Furthermore, our atomic model highlights specific evolutionary hotspots and will serve as a framework for understanding and re-engineering CISs.

Indexed as

Type VI Secretion SystemsBacteroidetesCryoelectron MicroscopyPhylogenyType VI Secretion Systems

Identifiers

PMID35165385
PMCPMC8894135
OpenAlexW4213316268

What OpenQuestion holds

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LicenceCC BY
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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.