Evidence map›Paper›PMID 33879615›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2021

A pocket-factor-triggered conformational switch in the hepatitis B virus capsid.

Lauriane Lecoq, Shishan Wang, Marie Dujardin, Peter Zimmermann, Leonard Schuster, Marie-Laure Fogeron, Mathilde Briday, Maarten Schledorn, Thomas Wiegand, Laura Cole and 5 more

Open access · hybridAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
3.6field-weighted citation impact, top 6% 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

18 citing papers in PubMed, 32 citations in OpenAlex.

  1. Article
  2. Capsid flexibility during Ty1 virus-like particle assembly.bioRxiv : the preprint server for biology · 2025
    Article
  3. Hepatitis B Virus Nucleocapsid Assembly.Journal of molecular biology · 2025
    Review
  4. Article
  5. Article
  6. Article
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  15. Review
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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

15 authors at 4 institutions in 3 countries.

Lauriane LecoqMolecular Microbiology and Structural Biochemistry, Labex Ecofect, UMR 5086 CNRS/Université de Lyon, Lyon 69367, France.ORCID 0000-0002-5995-3733
Shishan WangMolecular Microbiology and Structural Biochemistry, Labex Ecofect, UMR 5086 CNRS/Université de Lyon, Lyon 69367, France.
Marie DujardinMolecular Microbiology and Structural Biochemistry, Labex Ecofect, UMR 5086 CNRS/Université de Lyon, Lyon 69367, France.
Peter ZimmermannDepartment of Medicine II/Molecular Biology, University Hospital Freiburg, Medical Center, University of Freiburg, Freiburg 79106, Germany.ORCID 0000-0003-3892-8587
Leonard SchusterDepartment of Medicine II/Molecular Biology, University Hospital Freiburg, Medical Center, University of Freiburg, Freiburg 79106, Germany.
Marie-Laure FogeronMolecular Microbiology and Structural Biochemistry, Labex Ecofect, UMR 5086 CNRS/Université de Lyon, Lyon 69367, France.
Mathilde BridayMolecular Microbiology and Structural Biochemistry, Labex Ecofect, UMR 5086 CNRS/Université de Lyon, Lyon 69367, France.ORCID 0000-0002-0571-8551
Maarten SchledornPhysical Chemistry, ETH Zurich, Zurich 8093, Switzerland.ORCID 0000-0003-4789-7479
Thomas WiegandPhysical Chemistry, ETH Zurich, Zurich 8093, Switzerland.ORCID 0000-0003-3655-6150
Laura ColeMolecular Microbiology and Structural Biochemistry, Labex Ecofect, UMR 5086 CNRS/Université de Lyon, Lyon 69367, France.ORCID 0000-0001-8522-6292
Roland MontserretMolecular Microbiology and Structural Biochemistry, Labex Ecofect, UMR 5086 CNRS/Université de Lyon, Lyon 69367, France.
Stéphane BressanelliInstitute for Integrative Biology of the Cell, Commissariat à l'énergie atomique, CNRS, Université Paris-Saclay, Gif sur Yvette Cedex 91198, France.ORCID 0000-0002-0921-6727
Beat H MeierPhysical Chemistry, ETH Zurich, Zurich 8093, Switzerland.ORCID 0000-0002-9107-4464
Michael NassalDepartment of Medicine II/Molecular Biology, University Hospital Freiburg, Medical Center, University of Freiburg, Freiburg 79106, Germany; michael.nassal@uniklinik-freiburg.de a.bockmann@ibcp.fr.ORCID 0000-0003-2204-9158
Anja BöckmannMolecular Microbiology and Structural Biochemistry, Labex Ecofect, UMR 5086 CNRS/Université de Lyon, Lyon 69367, France; michael.nassal@uniklinik-freiburg.de a.bockmann@ibcp.fr.ORCID 0000-0001-8149-7941
Université Claude Bernard Lyon 1 · FRETH Zurich · CHUniversity of Freiburg · DECentre National de la Recherche Scientifique · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Viral hepatitis is growing into an epidemic illness, and it is urgent to neutralize the main culprit, hepatitis B virus (HBV), a small-enveloped retrotranscribing DNA virus. An intriguing observation in HB virion morphogenesis is that capsids with immature genomes are rarely enveloped and secreted. This prompted, in 1982, the postulate that a regulated conformation switch in the capsid triggers envelopment. Using solid-state NMR, we identified a stable alternative conformation of the capsid. The structural variations focus on the hydrophobic pocket of the core protein, a hot spot in capsid-envelope interactions. This structural switch is triggered by specific, high-affinity binding of a pocket factor. The conformational change induced by the binding is reminiscent of a maturation signal. This leads us to formulate the "synergistic double interaction" hypothesis, which explains the regulation of capsid envelopment and indicates a concept for therapeutic interference with HBV envelopment.

Indexed as

Capsid ProteinsHepatitis B virusProtein ConformationCapsid Proteinshepatitis B virushydrophobic pocketsolid-state NMRTriton

Identifiers

PMID33879615
PMCPMC8092406
OpenAlexW3153992186

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.