Evidence map›Paper›PMID 36264056›Full record

ArticleeLife2022

Structure of SARS-CoV-2 M protein in lipid nanodiscs.

Kimberly A Dolan, Mandira Dutta, David M Kern, Abhay Kotecha, Gregory A Voth, Stephen G Brohawn

Open access · goldAbstract read
In one paragraph

Article in eLife, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers.

0numbers the graph read from it
0cells of the map it votes in
51citing papers in PubMed
7.5field-weighted citation impact, top 2% 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

51 citing papers in PubMed, 80 citations in OpenAlex.

  1. Article
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  4. Review
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  6. Review
  7. Article
  8. Review
  9. SARS-CoV-2 S assembly into virions facilitated by host ERM proteins.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  10. SARS-CoV-2 membrane protein biogenesis.bioRxiv : the preprint server for biology · 2026
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Definition of the components required for selective packaging of coronavirus genomic RNA.Proceedings of the National Academy of Sciences of the United States of America · 2025
    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

6 authors at 3 institutions in 3 countries.

Kimberly A DolanBiophysics Graduate Group, University of California, Berkeley, Berkeley, United States.ORCID 0000-0002-9335-7791
Mandira DuttaDepartment of Chemistry, Chicago Center for Theoretical Chemistry, Institute for Biophysical Dynamics, and James Franck Institute, The University of Chicago, Chicago, United States.
David M KernDepartment of Molecular and Cell Biology, Helen Wills Neuroscience Institute, and California Institute for Quantitative Biosciences (QB3), University of California, Berkeley, Berkeley, United States.
Abhay KotechaMaterials and Structural Analysis Division, Thermo Fisher Scientific, Eindhoven, Netherlands.
Gregory A VothDepartment of Chemistry, Chicago Center for Theoretical Chemistry, Institute for Biophysical Dynamics, and James Franck Institute, The University of Chicago, Chicago, United States.ORCID 0000-0002-3267-6748
Stephen G BrohawnDepartment of Molecular and Cell Biology, Helen Wills Neuroscience Institute, and California Institute for Quantitative Biosciences (QB3), University of California, Berkeley, Berkeley, United States.ORCID 0000-0001-6768-3406
QB3 · USChicago Institute for Psychoanalysis · USThermo Fisher Scientific (Netherlands) · NL

Funding

MOLECULAR BIOPHYSICS TRAINING GRANTT32GM008295 · NIGMS · UNIVERSITY OF CALIFORNIA BERKELEY · PI HURLEY, JAMES H, WEMMER, DAVID E · 1989 to 2022
$8.1M
NIGMS NIH HHS T32 GM008295
6 · The paper itself

Abstract

SARS-CoV-2 encodes four structural proteins incorporated into virions, spike (S), envelope (E), nucleocapsid (N), and membrane (M). M plays an essential role in viral assembly by organizing other structural proteins through physical interactions and directing them to sites of viral budding. As the most abundant protein in the viral envelope and a target of patient antibodies, M is a compelling target for vaccines and therapeutics. Still, the structure of M and molecular basis for its role in virion formation are unknown. Here, we present the cryo-EM structure of SARS-CoV-2 M in lipid nanodiscs to 3.5 Å resolution. M forms a 50 kDa homodimer that is structurally related to the SARS-CoV-2 ORF3a viroporin, suggesting a shared ancestral origin. Structural comparisons reveal how intersubunit gaps create a small, enclosed pocket in M and large open cavity in ORF3a, consistent with a structural role and ion channel activity, respectively. M displays a strikingly electropositive cytosolic surface that may be important for interactions with N, S, and viral RNA. Molecular dynamics simulations show a high degree of structural rigidity in a simple lipid bilayer and support a role for M homodimers in scaffolding viral assembly. Together, these results provide insight into roles for M in coronavirus assembly and structure.

Indexed as

COVID-19SARS-CoV-2HumansLipidsNucleocapsid ProteinsSpike Glycoprotein, CoronavirusLipidsNucleocapsid ProteinsSpike Glycoprotein, Coronavirusspike protein, SARS-CoV-2coronaviruscryo-EMhumanmolecular biophysicsSARS-CoV-2structural biology

Identifiers

PMID36264056
PMCPMC9642992
OpenAlexW4306879641

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.