Evidence map›Paper›PMID 18614642›Full record

ArticleJournal of virology2008

Presence of the adenovirus IVa2 protein at a single vertex of the mature virion.

Joan B Christensen, Serena A Byrd, Angela K Walker, John R Strahler, Philip C Andrews, Michael J Imperiale

Abstract read
In one paragraph

Article in Journal of virology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing 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

32 citing papers in PubMed.

  1. Article
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  14. Components of Adenovirus Genome Packaging.Frontiers in microbiology · 2016
    Review
  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

6 authors.

Joan B ChristensenDepartment of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI 48109, USA.
Serena A Byrd
Angela K Walker
John R Strahler
Philip C Andrews
Michael J Imperiale

Funding

UNDERSTANDING THE PATHOGENESIS OF CAMPYLOBACTER JEJUNIP41RR018627 · NCRR · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI FINLEY, RUSSELL L · 2003 to 2007
$12.4M
Encapsidation of Adenovirus DNAR01AI052150 · NIAID · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI IMPERIALE, MICHAEL J. · 2002 to 2010
$2.4M
NCRR NIH HHS 5P41RR018627-05NCRR NIH HHS P41 RR018627NIAID NIH HHS AI052150NIAID NIH HHS R01 AI052150
6 · The paper itself

Abstract

Assembly of adenovirus particles is thought to be similar to that of bacteriophages, in which the double-stranded DNA genome is inserted into a preformed empty capsid. Previous studies from our and other laboratories have implicated the viral IVa2 protein as a key component of the encapsidation process. IVa2 binds to the packaging sequence on the viral chromosome in a sequence-specific manner, alone and in conjunction with the viral L4 22K protein. In addition, it interacts with the viral L1 52/55-kDa protein, which is required for DNA packaging. Finally, a mutant virus that does not produce IVa2 is unable to produce any capsids. Therefore, it has been proposed that IVa2 nucleates capsid assembly. A prediction of such a model is that the IVa2 protein would be found at a unique vertex of the mature virion. In this study, the location of IVa2 in the virion has been analyzed using immunogold staining and electron microscopy, and the copy number of IVa2 in virions was determined using three independent methods, quantitative mass spectrometry, metabolic labeling, and Western blotting. The results indicate that it resides at a unique vertex and that there are approximately six to eight IVa2 molecules in each particle. These findings support the hypothesis that the IVa2 protein plays multiple roles in the viral assembly process.

Indexed as

Virus AssemblyAdenoviruses, HumanBlotting, WesternCapsidCell LineGene DosageHeLa CellsHumansImmunohistochemistryMass SpectrometryMicroscopy, ElectronViral ProteinsVirioniva2 protein, adenovirusViral Proteins

Identifiers

PMID18614642
PMCPMC2546881

What OpenQuestion holds

Textmetadata
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.