Evidence map›Paper›PMID 19122884›Full record

ArticleComputational and mathematical methods in medicine2008

Irregular and Semi-Regular Polyhedral Models for Rous Sarcoma Virus Cores.

J Bernard Heymann, Carmen Butan, Dennis C Winkler, Rebecca C Craven, Alasdair C Steven

Open access · hybridAbstract read
In one paragraph

Article in Computational and mathematical methods in medicine, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
8.2field-weighted citation impact, top 3% 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

20 citing papers in PubMed, 34 citations in OpenAlex.

  1. High resolution electron tomography and segmentation-by-modeling interpretation in Bsoft.Protein science : a publication of the Protein Society · 2021
    Article
  2. Article
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  5. Capturing enveloped viruses on affinity grids for downstream cryo-electron microscopy applications.Microscopy and microanalysis : the official journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada · 2014
    Article
  6. Article
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  9. Assembly and architecture of HIV.Advances in experimental medicine and biology · 2012
    Review
  10. Article
  11. Article
  12. Article
  13. Hexagonal assembly of a restricting TRIM5alpha protein.Proceedings of the National Academy of Sciences of the United States of America · 2011
    Article
  14. Article
  15. Article
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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

5 authors at 3 institutions in 1 country.

J Bernard HeymannLaboratory of Structural Biology Research, National Institute for Arthritis, Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda MD 20892;
Carmen Butan
Dennis C Winkler
Rebecca C Craven
Alasdair C Steven
National Institute of Arthritis and Musculoskeletal and Skin Diseases · USNational Institutes of Health · USPennsylvania State University · 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
XRAY CRYSTALLOGRAPHIC STRUCTURE ANALYSIS: PROTEIN SORTINGP41RR001081 · NCRR · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI KORTEMME, TANJA · 1985 to 2011
$17.6M
Interactions of the CA Protein in the Retrovirus CoreR01CA100322 · NCI · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI CRAVEN, REBECCA C. · 2003 to 2013
$2.5M
Intramural NIH HHS Z99 AR999999NCI NIH HHS R01 CA100322NCRR NIH HHS P41 RR001081
6 · The paper itself

Abstract

Whereas many viruses have capsids of uniquely defined sizes that observe icosahedral symmetry, retrovirus capsids are highly polymorphic. Nevertheless, they may also be described as polyhedral foldings of a fullerene lattice on which the capsid protein (CA) is arrayed. Lacking the high order of symmetry that facilitates the reconstruction of icosahedral capsids from cryo-electron micrographs, the three-dimensional structures of individual retrovirus capsids may be determined by cryo-electron tomography, albeit at lower resolution. Here we describe computational and graphical methods to construct polyhedral models that match in size and shape, capsids of Rous sarcoma virus (RSV) observed within intact virions [8]. The capsids fall into several shape classes, including tubes, "lozenges", and "coffins". The extent to which a capsid departs from icosahedral symmetry reflects the irregularity of the distribution of pentamers, which are always 12 in number for a closed polyhedral capsid. The number of geometrically distinct polyhedra grows rapidly with increasing quotas of hexamers, and ranks in the millions for RSV capsids, which typically have 150 - 300 hexamers. Unlike the capsid proteins of icosahedral viruses that assume a minimal number of quasi-equivalent conformations equal to the triangulation number (T), retroviral CAs exhibit a near-continuum of quasi-equivalent conformations - a property that may be attributed to the flexible hinge linking the N- and C-terminal domains.

Identifiers

PMID19122884
PMCPMC2557098
OpenAlexW2105974649

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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.