Evidence map›Paper›PMID 20562343›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2010

Subgenomic messenger RNA amplification in coronaviruses.

Hung-Yi Wu, David A Brian

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 80 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
80citing papers in PubMed, 1 pooled it
3.6field-weighted citation impact, top 8% 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

80 citing papers in PubMed, 1 synthesis or guideline pooled it, 119 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. The coronavirus recombination pathway.Cell host & microbe · 2023
    Review
  13. Review
  14. Article
  15. Classification, replication, and transcription ofFrontiers in microbiology · 2023
    Review
  16. sgRNAs: A SARS-CoV-2 emerging issue.Aspects of molecular medicine · 2023
    Review
  17. Article
  18. Article
  19. Review
  20. Review

20 more citing papers are in PubMed but not listed here.

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.

Hung-Yi WuDepartments of Microbiology and Pathobiology, University of Tennessee College of Veterinary Medicine, Knoxville, TN 37996-0845, USA.
David A Brian
University of Tennessee at Knoxville · US

Funding

MECHANISMS OF CORONAVIRUS RNA AMPLIFICATIONR01AI014367 · NIAID · UNIVERSITY OF TENNESSEE KNOXVILLE · PI BRIAN, DAVID ALVIN · 1986 to 2012
$3.6M
NIAID NIH HHS AI14367NIAID NIH HHS R01 AI014367
6 · The paper itself

Abstract

Coronaviruses possess the largest known RNA genome, a 27- to 32-kb (+)-strand molecule that replicates in the cytoplasm. During virus replication, a 3' coterminal nested set of five to eight subgenomic (sg) mRNAs are made that are also 5' coterminal with the genome, because they carry the genomic leader as the result of discontinuous transcription at intergenic donor signals during (-)-strand synthesis when templates for sgmRNA synthesis are made. An unanswered question is whether the sgmRNAs, which appear rapidly and abundantly, undergo posttranscriptional amplification. Here, using RT-PCR and sequence analyses of head-to-tail-ligated (-) strands, we show that after transfection of an in vitro-generated marked sgmRNA into virus-infected cells, the sgmRNA, like the genome, can function as a template for (-)-strand synthesis. Furthermore, when the transfected sgmRNA contains an internally placed RNA-dependent RNA polymerase template-switching donor signal, discontinuous transcription occurs at this site, and a shorter, 3' terminally nested leader-containing sgmRNA is made, as evidenced by its leader-body junction and by the expression of a GFP gene. Thus, in principle, the longer-nested sgmRNAs in a natural infection, all of which contain potential internal template-switching donor signals, can function to increase the number of the shorter 3'-nested sgmRNAs. One predicted advantage of this behavior for coronavirus survivability is an increased chance of maintaining genome fitness in the 3' one-third of the genome via a homologous recombination between the (now independently abundant) WT sgmRNA and a defective genome.

Indexed as

Blotting, NorthernCell Line, TumorCoronavirusGene AmplificationGenome, ViralHumansModels, GeneticReverse Transcriptase Polymerase Chain ReactionRNA, MessengerRNA Processing, Post-TranscriptionalRNA, ViralTemplates, GeneticVirus ReplicationRNA, MessengerRNA, Viral

Identifiers

PMID20562343
PMCPMC2901459
OpenAlexW2050223134

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.