Evidence map›Paper›PMID 19403678›Full record

ArticleJournal of virology2009

Molecular determinants for subcellular localization of the severe acute respiratory syndrome coronavirus open reading frame 3b protein.

Eric C Freundt, Li Yu, Elizabeth Park, Michael J Lenardo, Xiao-Ning Xu

Open access · greenAbstract read
In one paragraph

Article in Journal of virology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers.

0numbers the graph read from it
0cells of the map it votes in
71citing papers in PubMed
1.1field-weighted citation impact, top 22% 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

71 citing papers in PubMed, 104 citations in OpenAlex.

  1. Review
  2. Anti-interferon armamentarium of human coronaviruses.Cellular and molecular life sciences : CMLS · 2025
    Review
  3. Review
  4. Article
  5. Review
  6. Review
  7. Review
  8. Contribution to pathogenesis of accessory proteins of deadly human coronaviruses.Frontiers in cellular and infection microbiology · 2023
    Review
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Review
  15. Review
  16. Article
  17. SIRT5 is a proviral factor that interacts with SARS-CoV-2 Nsp14 protein.bioRxiv : the preprint server for biology · 2022
    Article
  18. A pathway map of signaling events triggered upon SARS-CoV infection.Journal of cell communication and signaling · 2021
    Article
  19. Review
  20. Article

11 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

5 authors at 3 institutions in 2 countries.

Eric C FreundtLaboratory of Immunology, Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20892, USA.
Li Yu
Elizabeth Park
Michael J Lenardo
Xiao-Ning Xu
National Institute of Allergy and Infectious Diseases · USMedical Research Council · GBUniversity of Oxford · GB

Funding

Molecular Pathways of Programmed Cell Death And Viral CytopathicityZIAAI000718 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI SU, HELEN · 2009 to 2024
$4.5M
Molecular Pathways--Programmed Death/Viral CytopathicityZ01AI000718 · NIAID · NIAID EXTRAMURAL ACTIVITIES · PI LENARDO, MICHAEL · 1995 to 2008
$763k
Intramural NIH HHSMedical Research Council MC_U137881015
6 · The paper itself

Abstract

Viruses such as hepatitis C and the severe acute respiratory syndrome coronavirus (SARS-CoV) encode proteins that are distributed between mitochondria and the nucleus, but little is known about the factors that control partitioning between these sites. SARS-CoV encodes a unique accessory gene called open reading frame (ORF) 3b that, like other unique accessory genes in SARS-CoV, likely contributes to viral pathogenicity. The ORF 3b protein is 154 amino acids and is predicted to express from the second ORF in subgenomic RNA3. In this report, we have characterized the molecular components that regulate intracellular localization of the ORF 3b protein. We demonstrate unique shuttling behavior of ORF 3b, whereby the protein initially accumulates in the nucleus and subsequently translocates to mitochondria. Following nuclear localization, ORF 3b traffics to the outer membrane of mitochondria via a predicted amphipathic alpha-helix. Additionally, ORF 3b contains a consensus nuclear export sequence, and we demonstrate that nuclear export and thus mitochondrial translocation are dependent on a leptomycin B-sensitive nuclear export mechanism. We further show that ORF 3b inhibits induction of type I interferon induced by retinoic acid-induced gene 1 and the mitochondrial antiviral signaling protein. Our observations provide insights into the cellular localization of ORF 3b that may enhance our understanding of the mechanisms by which ORF 3b contributes to SARS-CoV pathogenesis. The findings reported here reveal that for multilocalized proteins, consideration of the spatiotemporal distribution may be crucial for understanding viral protein behavior and function.

Indexed as

Open Reading FramesActive Transport, Cell NucleusAmino Acid SequenceAnimalsCell NucleusChlorocebus aethiopsHumansMitochondriaMitochondrial MembranesMolecular Sequence DataMutagenesis, Site-DirectedSevere acute respiratory syndrome-related coronavirusVero CellsViral Structural ProteinsViral Structural Proteins

Identifiers

PMID19403678
PMCPMC2698541
OpenAlexW2122511992

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.