Evidence map›Paper›PMID 23015694›Full record

ArticleJournal of virology2012

In vitro assembly of an empty picornavirus capsid follows a dodecahedral path.

Chenglei Li, Joseph Che-Yen Wang, Milton W Taylor, Adam Zlotnick

Abstract read
In one paragraph

Article in Journal of virology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing 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

30 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Viral structural proteins as targets for antivirals.Current opinion in virology · 2020
    Review
  11. Article
  12. Article
  13. Evolutionary and Structural Overview of Human Picornavirus Capsid Antibody Evasion.Frontiers in cellular and infection microbiology · 2019
    Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  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.

Chenglei LiDepartment of Molecular and Cellular Biochemistry, Indiana University, Bloomington, Indiana, USA.
Joseph Che-Yen Wang
Milton W Taylor
Adam Zlotnick

Funding

The Biophysics of Virus Capsid AssemblyR01AI077688 · NIAID · TRUSTEES OF INDIANA UNIVERSITY · PI ZLOTNICK, ADAM · 2009 to 2013
$1.5M
The Biophysics of Virus Capsid AssemblyR56AI077688 · NIAID · TRUSTEES OF INDIANA UNIVERSITY · PI ZLOTNICK, ADAM · 2014 to 2014
$347k
Assembly of a Dodecahedral VirusR03AI102873 · NIAID · TRUSTEES OF INDIANA UNIVERSITY · PI ZLOTNICK, ADAM · 2013 to 2014
$139k
NIAID NIH HHS AI077688NIAID NIH HHS R01 AI077688NIAID NIH HHS R03 AI102873NIAID NIH HHS R56 AI077688
6 · The paper itself

Abstract

The Picornaviridae are a large family of small, spherical RNA viruses that includes numerous pathogens. The picornavirus structural proteins VP0, VP1, and VP3 are believed to first form protomers, which then form 14S particles and subsequently assemble to form empty and RNA-filled particles. 14S particles have long been presumed to be pentamers. However, the structure of the 14S particles, their mechanism of assembly, and the role of empty particles during infection are all unknown. We established an in vitro assembly system for bovine enterovirus (BEV) by using purified baculovirus-expressed proteins. By Rayleigh scattering, we determined that 14S particles are 488 kDa, confirming they are pentamers. Image reconstructions based on negative-stain electron microscopy showed that 14S particles have 5-fold symmetry, and their structures correlate extremely well with the corresponding pentamer from crystal structures of mature BEV. Purified 14S particles readily assemble in response to increasing ionic strength or temperature to form 5.8-MDa 12-pentamer particles, indistinguishable from native empty particles. Surprisingly, empty particles were sufficiently stable that, under physiological conditions, dissociation is unlikely to be a biologically relevant reaction. This suggests that empty particles are not a storage form of 14S particles, at least for bovine enterovirus, but are either a dead-end product or direct precursor into which viral RNA is packaged by as-yet-unidentified machinery.

Indexed as

BaculoviridaeCapsidCapsid ProteinsChromatography, High Pressure LiquidDNA PrimersEnterovirus, BovineIn Vitro TechniquesMicroscopy, Electron, TransmissionPlasmidsVirionVirus AssemblyCapsid ProteinsDNA Primers

Identifiers

PMID23015694
PMCPMC3497625

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.