Evidence map›Paper›PMID 25188030›Full record

ArticlePloS one2014

Viral RNAs are unusually compact.

Ajaykumar Gopal, Defne E Egecioglu, Aron M Yoffe, Avinoam Ben-Shaul, Ayala L N Rao, Charles M Knobler, William M Gelbart

Abstract read
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing 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

28 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Measuring the selective packaging of RNA molecules by viral coat proteins in cells.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Virus Mechanics under Molecular Crowding.The journal of physical chemistry. B · 2021
    Article
  17. Article
  18. Physics of viral dynamics.Nature reviews. Physics · 2021
    Review
  19. Article
  20. Finally, a Role Befitting AJournal of virology · 2020
    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.

Ajaykumar GopalDepartment of Chemistry & Biochemistry, University of California Los Angeles, Los Angeles, California, United States of America.
Defne E EgeciogluDepartment of Chemistry & Biochemistry, University of California Los Angeles, Los Angeles, California, United States of America.
Aron M YoffeDepartment of Chemistry & Biochemistry, University of California Los Angeles, Los Angeles, California, United States of America.
Avinoam Ben-ShaulInstitute of Chemistry & The Fritz Haber Research Center, The Hebrew University of Jerusalem, Givat Ram, Jerusalem, Israel.
Ayala L N RaoDepartment of Plant Pathology, University of California Riverside, Riverside, California, United States of America.
Charles M KnoblerDepartment of Chemistry & Biochemistry, University of California Los Angeles, Los Angeles, California, United States of America.
William M GelbartDepartment of Chemistry & Biochemistry, University of California Los Angeles, Los Angeles, California, United States of America.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A majority of viruses are composed of long single-stranded genomic RNA molecules encapsulated by protein shells with diameters of just a few tens of nanometers. We examine the extent to which these viral RNAs have evolved to be physically compact molecules to facilitate encapsulation. Measurements of equal-length viral, non-viral, coding and non-coding RNAs show viral RNAs to have among the smallest sizes in solution, i.e., the highest gel-electrophoretic mobilities and the smallest hydrodynamic radii. Using graph-theoretical analyses we demonstrate that their sizes correlate with the compactness of branching patterns in predicted secondary structure ensembles. The density of branching is determined by the number and relative positions of 3-helix junctions, and is highly sensitive to the presence of rare higher-order junctions with 4 or more helices. Compact branching arises from a preponderance of base pairing between nucleotides close to each other in the primary sequence. The density of branching represents a degree of freedom optimized by viral RNA genomes in response to the evolutionary pressure to be packaged reliably. Several families of viruses are analyzed to delineate the effects of capsid geometry, size and charge stabilization on the selective pressure for RNA compactness. Compact branching has important implications for RNA folding and viral assembly.

Indexed as

Nucleic Acid ConformationBase PairingBromovirusElectrophoresis, Agar GelGenome, ViralLevivirusModels, MolecularRNA FoldingRNA, ViralRNA VirusesSpectrometry, FluorescenceTogaviridaeVirus AssemblyRNA, Viral

Identifiers

PMID25188030
PMCPMC4154850

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.