Evidence map›Paper›PMID 22713567›Full record

ArticleBiophysical journal2012

Investigation of Ebola VP40 assembly and oligomerization in live cells using number and brightness analysis.

Emmanuel Adu-Gyamfi, Michelle A Digman, Enrico Gratton, Robert V Stahelin

Abstract read
In one paragraph

Article in Biophysical journal, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers.

0numbers the graph read from it
0cells of the map it votes in
49citing 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

49 citing papers in PubMed.

  1. Article
  2. Conserved Filovirus Proteins as Targets of Broad-Spectrum Antivirals.bioRxiv : the preprint server for biology · 2025
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Cheminformatics-Based Study Identifies Potential Ebola VP40 Inhibitors.International journal of molecular sciences · 2023
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Review
  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.

Emmanuel Adu-GyamfiDepartment of Chemistry and Biochemistry and the Eck Institute for Global Health, University of Notre Dame, Notre Dame, Indiana, USA.
Michelle A Digman
Enrico Gratton
Robert V Stahelin

Funding

Univ.of Calif., Irvine Cancer Center Support GrantP30CA062203 · NCI · UNIVERSITY OF CALIFORNIA-IRVINE · PI Christine Hui · 1994 to 2026
$57.9M
Uncover Strategies Used By Biological SystemsP50GM076516 · NIGMS · UNIVERSITY OF CALIFORNIA-IRVINE · PI LANDER, ARTHUR D · 2007 to 2016
$25.1M
LIPID-PROTEIN INTERACTIONS IN VIRAL ASSEMBLY AND VIRUS LIKE PARTICLE FORMATIONR01AI081077 · NIAID · PURDUE UNIVERSITY · PI STAHELIN, ROBERT VIRGIL · 2009 to 2019
$3.5M
NCI NIH HHS P30 CA062203NIAID NIH HHS AI081077NIAID NIH HHS R01 AI081077NIGMS NIH HHS P50 GM076516NIGMS NIH HHS P50-GM076516PHS HHS P41-RRO3155
6 · The paper itself

Abstract

Ebola virus assembles and buds from the inner leaflet of the plasma membrane of mammalian cells, which is primarily attributed to its major matrix protein VP40. Oligomerization of VP40 has been shown to be essential to the life cycle of the virus including formation of virions from infected cells. To date, VP40 oligomerization has mainly been assessed by chemical cross-linking following cell fractionation studies with VP40 transfected cells. This has made it difficult to discern the spatial and temporal dynamics of VP40 oligomerization. To gain a better understanding of the VP40 assembly and oligomerization process in live cells, we have employed real-time imaging of enhanced green fluorescent protein tagged VP40. Here, we use both confocal and total internal reflection microscopy coupled with number and brightness analysis to show that VP40 oligomers are localized on the plasma membrane and are highly enriched at sites of membrane protrusion, consistent with sites of viral budding. These filamentous plasma membrane protrusion sites harbor VP40 hexamers, octamers, and higher order oligomers. Consistent with previous reports, abrogation of VP40 oligomerization through mutagenesis greatly diminished VP40 egress and also abolished membrane protrusion sites enriched with VP40. In sum, real-time single-molecule imaging of fluorescently labeled Ebola VP40 is able to resolve the spatial and temporal dynamics of VP40 oligomerization.

Indexed as

Protein MultimerizationCell MembraneCell SurvivalCytosolGreen Fluorescent ProteinsHEK293 CellsHumansMicroscopyModels, MolecularNucleoproteinsProtein Structure, QuaternaryProtein Structure, SecondaryRecombinant Fusion ProteinsSpectrum AnalysisViral Core ProteinsVirionenhanced green fluorescent proteinGreen Fluorescent ProteinsNucleoproteinsnucleoprotein VP40, Ebola virusRecombinant Fusion ProteinsViral Core Proteins

Identifiers

PMID22713567
PMCPMC3368128

What OpenQuestion holds

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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.