Evidence map›Paper›PMID 25822993›Full record

ArticleNature structural & molecular biology2015

Atomic structures of a bactericidal contractile nanotube in its pre- and postcontraction states.

Peng Ge, Dean Scholl, Petr G Leiman, Xuekui Yu, Jeff F Miller, Z Hong Zhou

Abstract read
In one paragraph

Article in Nature structural & molecular biology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 109 papers.

0numbers the graph read from it
0cells of the map it votes in
109citing papers in PubMed
–field-weighted citation impact
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

109 citing papers in PubMed.

  1. Article
  2. Article
  3. Review
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  5. Article
  6. Article
  7. Lipopolysaccharide-targeting treatments for multidrug-resistantExpert opinion on therapeutic targets · 2026
    Review
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  12. The spike tip protein of bacteriophage T4.bioRxiv : the preprint server for biology · 2025
    Article
  13. Article
  14. Journal of virology · 2025
    Article
  15. Review
  16. Article
  17. Physics of a super-fast viral jab.Biophysical journal · 2025
    Article
  18. Review
  19. Article
  20. Article

49 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors.

Peng Ge1] Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles (UCLA), Los Angeles, California, USA. [2] California NanoSystems Institute (CNSI), UCLA, Los Angeles, California, USA.
Dean SchollAvidBiotics, South San Francisco, California, USA.
Petr G Leimancole Polytechnique Fédérale de Lausanne (EPFL), Institute of Physics of Biological Systems, Lausanne, Switzerland.ORCID 0000000290910918
Xuekui Yu1] Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles (UCLA), Los Angeles, California, USA. [2] California NanoSystems Institute (CNSI), UCLA, Los Angeles, California, USA.
Jeff F Miller1] Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles (UCLA), Los Angeles, California, USA. [2] California NanoSystems Institute (CNSI), UCLA, Los Angeles, California, USA.
Z Hong Zhou1] Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles (UCLA), Los Angeles, California, USA. [2] California NanoSystems Institute (CNSI), UCLA, Los Angeles, California, USA.

Funding

UCLA Clinical and Translational Science InstituteUL1TR000124 · NCATS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI DUBINETT, STEVEN M. · 2012 to 2015
$57.0M
Genome Structure, Transcription and Packaging of dsRNA VirusesR01AI094386 · NIAID · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI Z Hong ZHOU · 2012 to 2026
$6.0M
High-Resolution CryoEM Reconstruction of Large ComplexesR01GM071940 · NIGMS · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI ZHOU, Z HONG · 2006 to 2025
$5.0M
HIGH-END CRYOEM INSTRUMENT FOR UCLA ELECTRON IMAGING CTR FOR NANOMACHINES: AIDSS10RR023057 · NCRR · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI ZHOU, Z HONG · 2006 to 2006
$1.6M
STRUCTURAL STUDIES OF HUMAN CYTOMEGALOVIRUSR01AI046420 · NIAID · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI ZHOU, Z HONG · 2000 to 2004
$1.1M
NCATS NIH HHS UL1 TR000124NCRR NIH HHS 1S10RR23057NCRR NIH HHS S10 RR023057NIAID NIH HHS AI046420NIAID NIH HHS AI094386NIAID NIH HHS R01 AI046420NIAID NIH HHS R01 AI094386NIGMS NIH HHS GM071940NIGMS NIH HHS R01 GM071940
6 · The paper itself

Abstract

R-type pyocins are representatives of contractile ejection systems, a class of biological nanomachines that includes, among others, the bacterial type VI secretion system (T6SS) and contractile bacteriophage tails. We report atomic models of the Pseudomonas aeruginosa precontraction pyocin sheath and tube, and the postcontraction sheath, obtained by cryo-EM at 3.5-Å and 3.9-Å resolutions, respectively. The central channel of the tube is negatively charged, in contrast to the neutral and positive counterparts in T6SSs and phage tails. The sheath is interwoven by long N- and C-terminal extension arms emanating from each subunit, which create an extensive two-dimensional mesh that has the same connectivity in the extended and contracted state of the sheath. We propose that the contraction process draws energy from electrostatic and shape complementarities to insert the inner tube through bacterial cell membranes to eventually kill the bacteria.

Indexed as

Anti-Bacterial AgentsBacterial ProteinsBacterial Secretion SystemsBacteriophagesCell MembraneContractile ProteinsCrystallography, X-RayMicroscopy, ElectronModels, MolecularNanotubesProtein Structure, SecondaryPseudomonas aeruginosaPyocinsAnti-Bacterial AgentsBacterial ProteinsBacterial Secretion SystemsContractile ProteinsPyocins

Identifiers

PMID25822993
PMCPMC4445970

What OpenQuestion holds

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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.