Evidence map›Paper›PMID 18442978›Full record

ArticleThe Journal of biological chemistry2008

A locking mechanism regulates RNA synthesis and host protein interaction by the hepatitis C virus polymerase.

Sreedhar Chinnaswamy, Ian Yarbrough, Satheesh Palaninathan, C T Ranjith Kumar, Vinodhini Vijayaraghavan, Borries Demeler, Stanley M Lemon, James C Sacchettini, C Cheng Kao

Abstract read
In one paragraph

Article in The Journal of biological chemistry, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing 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

40 citing papers in PubMed.

  1. Article
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  9. Review
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  12. Common and unique features of viral RNA-dependent polymerases.Cellular and molecular life sciences : CMLS · 2014
    Review
  13. Article
  14. 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

9 authors.

Sreedhar ChinnaswamyDepartment of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843-2128, USA.
Ian Yarbrough
Satheesh Palaninathan
C T Ranjith Kumar
Vinodhini Vijayaraghavan
Borries Demeler
Stanley M Lemon
James C Sacchettini
C Cheng Kao

Funding

Virus-Host Interactions in Hepatitis C Virus (HCV) InfectionsU19AI040035 · NIAID · UNIVERSITY OF TEXAS MEDICAL BR GALVESTON · PI THOMAS, DAVID L · 1996 to 2009
$12.0M
Drug Dev for Opportunistic Inf. - Cell and Animal Model Development for Hep. CN01AI25488 · NIAID · UNIVERSITY OF TEXAS MED BR GALVESTON · 2007 to 2008
$2.8M
RNA-dependent RNA Synthesis by the Hepatitis C VirusR01AI073335 · NIAID · TRUSTEES OF INDIANA UNIVERSITY · PI KAO, CHENG C · 2008 to 2012
$1.5M
NIAID NIH HHS 1 R01 AI 073335NIAID NIH HHS N01 AI 25488NIAID NIH HHS R01 AI073335NIAID NIH HHS U19 AI 40035
6 · The paper itself

Abstract

Mutational analysis of the hepatitis C virus (HCV) RNA-dependent RNA polymerase (RdRp) template channel identified two residues, Trp(397) and His(428), which are required for de novo initiation but not for extension from a primer. These two residues interact with the Delta1 loop on the surface of the RdRp. A deletion within the Delta1 loop also resulted in comparable activities. The mutant proteins exhibit increased double-stranded RNA binding compared with the wild type, suggesting that the Delta1 loop serves as a flexible locking mechanism to regulate the conformations needed for de novo initiation and for elongative RNA synthesis. A similar locking motif can be found in other viral RdRps. Products associated with the open conformation of the HCV RdRp were inhibited by interaction with the retinoblastoma protein but not cyclophilin A. Different conformations of the HCV RdRp can thus affect RNA synthesis and interaction with cellular proteins.

Indexed as

Base SequenceCyclophilinsHepacivirusModels, MolecularMutationNucleic Acid ConformationProtein BindingProtein Structure, QuaternaryProtein Structure, TertiaryRetinoblastomaRNA-Dependent RNA PolymeraseRNA, ViralStructural Homology, ProteinCyclophilinsRNA-Dependent RNA PolymeraseRNA, Viral

Identifiers

PMID18442978
PMCPMC2459299

What OpenQuestion holds

Textmetadata
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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.