Evidence map›Paper›PMID 32997730›Full record

ArticlePLoS pathogens2020

Cryo-EM structures reveal two distinct conformational states in a picornavirus cell entry intermediate.

Pranav N M Shah, David J Filman, Krishanthi S Karunatilaka, Emma L Hesketh, Elisabetta Groppelli, Mike Strauss, James M Hogle

Open access · goldAbstract read
In one paragraph

Article in PLoS pathogens, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
2.5field-weighted citation impact, top 9% 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

24 citing papers in PubMed, 28 citations in OpenAlex.

  1. Open questions in enterovirus uncoating.Journal of virology · 2026
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  17. Flexible, disposable photocatalytic plastic films for the destruction of viruses.Journal of photochemistry and photobiology. B, Biology · 2022
    Article
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  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

7 authors at 3 institutions in 3 countries.

Pranav N M ShahDepartment of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, United States of America.ORCID 0000-0003-1212-904X
David J FilmanDepartment of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, United States of America.ORCID 0000-0002-8714-1644
Krishanthi S KarunatilakaDepartment of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, United States of America.
Emma L HeskethAstbury Centre for Structural Molecular Biology, School of Molecular & Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom.ORCID 0000-0002-4522-0061
Elisabetta GroppelliSchool of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom.
Mike StraussDepartment of Anatomy and Cell Biology, McGill University, Montreal, Canada.ORCID 0000-0002-0986-2868
James M HogleDepartment of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, United States of America.ORCID 0000-0002-3655-1504
Harvard University · USUniversity of Leeds · GBMcGill University · CA

Funding

Structural Analysis of Enterovirus Cell Entry PathwaysR01AI020566 · NIAID · SCRIPPS RESEARCH INSTITUTE · PI HOGLE, JAMES M · 1985 to 2018
$9.0M
HIGH-RESOLUTION CRYSTALLOGRAPHIC STUDIES OF POLIOVIRUSR37AI020566 · NIAID · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI HOGLE, JAMES M · 1992 to 2001
$934k
Structual Analysis of Enterovirus Cell Entry PathwaysR21AI020566 · NIAID · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI HOGLE, JAMES M · 2002 to 2002
$258k
MRF_ MRF-044-0003-RG-GROPPNIAID NIH HHS R01 AI020566NIAID NIH HHS R21 AI020566NIAID NIH HHS R37 AI020566Wellcome TrustWellcome Trust 108466/Z/15/Z
6 · The paper itself

Abstract

The virions of enteroviruses such as poliovirus undergo a global conformational change after binding to the cellular receptor, characterized by a 4% expansion, and by the opening of holes at the two and quasi-three-fold symmetry axes of the capsid. The resultant particle is called a 135S particle or A-particle and is thought to be on the pathway to a productive infection. Previously published studies have concluded that the membrane-interactive peptides, namely VP4 and the N-terminus of VP1, are irreversibly externalized in the 135S particle. However, using established protocols to produce the 135S particle, and single particle cryo-electron microscopy methods, we have identified at least two unique states that we call the early and late 135S particle. Surprisingly, only in the "late" 135S particles have detectable levels of the VP1 N-terminus been trapped outside the capsid. Moreover, we observe a distinct density inside the capsid that can be accounted for by VP4 that remains associated with the genome. Taken together our results conclusively demonstrate that the 135S particle is not a unique conformation, but rather a family of conformations that could exist simultaneously.

Indexed as

CapsidCapsid ProteinsCryoelectron MicroscopyHumansModels, MolecularPoliomyelitisReceptors, VirusRNA, ViralVirionVirus InternalizationCapsid ProteinsReceptors, VirusRNA, Viral

Identifiers

PMID32997730
PMCPMC7549760
OpenAlexW3090060227

What OpenQuestion holds

Textmetadata
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.