Evidence map›Paper›PMID 18400852›Full record

ArticleJournal of virology2008

Poliovirus 2A(Pro) increases viral mRNA and polysome stability coordinately in time with cleavage of eIF4G.

Brian J Kempf, David J Barton

Open access · greenAbstract 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
2.3field-weighted citation impact, top 11% 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

32 citing papers in PubMed, 42 citations in OpenAlex.

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  17. Cleavage of Grb2-Associated Binding Protein 2 by Viral Proteinase 2A duringFrontiers in cellular and infection microbiology · 2017
    Article
  18. Review
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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

2 authors at 1 institution in 1 country.

Brian J KempfDepartment of Microbiology, University of Colorado Denver, School of Medicine, 12800 East 19th Ave., Aurora, CO 80045, USA.
David J Barton
University of Colorado Denver · US

Funding

Enterovirus RNA Translation and ReplicationR01AI042189 · NIAID · UNIVERSITY OF COLORADO DENVER · PI BARTON, DAVID J · 1998 to 2024
$7.2M
Molecular Basis of Microbial PathogenesisT32AI007537 · NIAID · UNIVERSITY OF COLORADO DENVER · PI HOLMES, RANDALL K · 1998 to 2007
$1.3M
Enterovirus RNA Translation and ReplicationR56AI042189 · NIAID · UNIVERSITY OF COLORADO DENVER · PI BARTON, DAVID J · 2009 to 2009
$341k
Enterovirus RNA Translation and ReplicationR21AI042189 · NIAID · UNIVERSITY OF COLORADO DENVER · PI BARTON, DAVID J · 2003 to 2003
$268k
NIAID NIH HHS AI42189NIAID NIH HHS R01 AI042189NIAID NIH HHS R21 AI042189NIAID NIH HHS R56 AI042189NIAID NIH HHS T32 AI007537NIAID NIH HHS T32 AI07537
6 · The paper itself

Abstract

Poliovirus (PV) 2A protease (2A(Pro)) cleaves eukaryotic initiation factors 4GI and 4GII (eIF4GI and eIF4GII) within virus-infected cells, effectively halting cap-dependent mRNA translation. PV mRNA, which does not possess a 5' cap, is translated via cap-independent mechanisms within viral protease-modified messenger ribonucleoprotein (mRNP) complexes. In this study, we determined that 2A(Pro) activity was required for viral polysome formation and stability. 2A(Pro) cleaved eIF4GI and eIF4GII as PV polysomes assembled. A 2A(Cys109Ser) (2A(Pro) with a Cys109Ser mutation) protease active site mutation that prevented cleavage of eIF4G coordinately inhibited the de novo formation of viral polysomes, the stability of viral polysomes, and the stability of PV mRNA within polysomes. 2A(Cys109Ser)-associated defects in PV mRNA and polysome stability correlated with defects in PV mRNA translation. 3C(Pro) activity was not required for viral polysome formation or stability. 2A(Pro)-mediated cleavage of eIF4G along with poly(rC) binding protein binding to the 5' terminus of uncapped PV mRNA appear to be concerted mechanisms that allow PV mRNA to form mRNP complexes that evade cellular mRNA degradation machinery.

Indexed as

RNA StabilityCell-Free SystemCysteine EndopeptidasesEukaryotic Initiation Factor-4GHeLa CellsHumansMutationPoliovirusPolyribosomesProtein BiosynthesisProtein Processing, Post-TranslationalRNA, MessengerRNA, ViralSulfur RadioisotopesViral ProteinsCysteine EndopeptidasesEukaryotic Initiation Factor-4GRNA, MessengerRNA, ViralSulfur RadioisotopesViral Proteins

Identifiers

PMID18400852
PMCPMC2395153
OpenAlexW2148498911

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.