Evidence map›Paper›PMID 23219881›Full record

ArticleStructure (London, England : 1993)2013

Antigenic switching of hepatitis B virus by alternative dimerization of the capsid protein.

Michael A DiMattia, Norman R Watts, Stephen J Stahl, Jonathan M Grimes, Alasdair C Steven, David I Stuart, Paul T Wingfield

Open access · bronzeAbstract read
In one paragraph

Article in Structure (London, England : 1993), 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed, 1 pooled it
3.1field-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

49 citing papers in PubMed, 1 synthesis or guideline pooled it, 72 citations in OpenAlex.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 4 institutions in 2 countries.

Michael A DiMattiaDivision of Structural Biology, Henry Wellcome Building for Genomic Medicine, University of Oxford, Roosevelt Drive, Headington OX3 7BN, UK; Laboratory of Structural Biology Research, National Institute of Arthritis and Musculoskeletal and Skin Diseases; National Institutes of Health, Bethesda, MD 20892, USA.
Norman R WattsProtein Expression Laboratory, National Institute of Arthritis and Musculoskeletal and Skin Diseases; National Institutes of Health, Bethesda, MD 20892, USA.
Stephen J StahlProtein Expression Laboratory, National Institute of Arthritis and Musculoskeletal and Skin Diseases; National Institutes of Health, Bethesda, MD 20892, USA.
Jonathan M GrimesDivision of Structural Biology, Henry Wellcome Building for Genomic Medicine, University of Oxford, Roosevelt Drive, Headington OX3 7BN, UK; Diamond Light Source, Didcot OX11 0DE, UK.
Alasdair C StevenLaboratory of Structural Biology Research, National Institute of Arthritis and Musculoskeletal and Skin Diseases; National Institutes of Health, Bethesda, MD 20892, USA. Electronic address: stevena@mail.nih.gov.
David I StuartDivision of Structural Biology, Henry Wellcome Building for Genomic Medicine, University of Oxford, Roosevelt Drive, Headington OX3 7BN, UK; Diamond Light Source, Didcot OX11 0DE, UK. Electronic address: dave@strubi.ox.ac.uk.
Paul T WingfieldProtein Expression Laboratory, National Institute of Arthritis and Musculoskeletal and Skin Diseases; National Institutes of Health, Bethesda, MD 20892, USA.
National Institute of Arthritis and Musculoskeletal and Skin Diseases · USUniversity of Oxford · GBCentre for Human Genetics · GBProtein Express (United States) · US

Funding

Structural Biology Of Virus AssemblyZIAAR027002 · NIAMS · NATIONAL INSTITUTE OF ARTHRITIS AND MUSCULOSKELETAL AND SKIN DISEASES · PI WINGFIELD, PAUL T · 2009 to 2024
$19.2M
Structure And Assembly Of The Hepatitis B Nucleocapsid ProteinZIAAR041117 · NIAMS · NATIONAL INSTITUTE OF ARTHRITIS AND MUSCULOSKELETAL AND SKIN DISEASES · PI WINGFIELD, PAUL T · 2009 to 2015
$5.0M
Intramural NIH HHS ZIA AR027002Intramural NIH HHS ZIA AR041117Medical Research Council G1000099Medical Research Council G1100525Wellcome Trust 075491/Z/04Wellcome Trust 090532
6 · The paper itself

Abstract

Chronic hepatitis B virus (HBV) infection afflicts millions worldwide with cirrhosis and liver cancer. HBV e-antigen (HBeAg), a clinical marker for disease severity, is a nonparticulate variant of the protein (core antigen, HBcAg) that forms the building-blocks of capsids. HBeAg is not required for virion production, but is implicated in establishing immune tolerance and chronic infection. Here, we report the crystal structure of HBeAg, which clarifies how the short N-terminal propeptide of HBeAg induces a radically altered mode of dimerization relative to HBcAg (∼140° rotation), locked into place through formation of intramolecular disulfide bridges. This structural switch precludes capsid assembly and engenders a distinct antigenic repertoire, explaining why the two antigens are cross-reactive at the T cell level (through sequence identity) but not at the B cell level (through conformation). The structure offers insight into how HBeAg may establish immune tolerance for HBcAg while evading its robust immunogenicity.

Indexed as

CapsidCapsid ProteinsCrystallography, X-RayHepatitis B Core AntigensHepatitis B e AntigensHepatitis B virusImmune EvasionMolecular MimicryProtein MultimerizationProtein PrecursorsProtein Structure, QuaternaryProtein Structure, SecondaryCapsid ProteinsHepatitis B Core AntigensHepatitis B e AntigensProtein Precursors

Identifiers

PMID23219881
PMCPMC3544974
OpenAlexW1964004029

What OpenQuestion holds

Textmetadata
LicenceTDM
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.