Evidence map›Paper›PMID 31765566›Full record

ArticleACS chemical biology2020

Synthetic Antibody Binding to a Preorganized RNA Domain of Hepatitis C Virus Internal Ribosome Entry Site Inhibits Translation.

Deepak Koirala, Anna Lewicka, Yelena Koldobskaya, Hao Huang, Joseph A Piccirilli

Abstract read
In one paragraph

Article in ACS chemical biology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 2 pooled it
–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

23 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Current Practice in Bicistronic IRES Reporter Use: A Systematic Review.International journal of molecular sciences · 2021
    Pooled it
  3. Article
  4. Article
  5. Ins and outs of IRES elements: function and significance.Biochemical Society transactions · 2025
    Review
  6. Review
  7. Probing the proteome.Nature biotechnology · 2025
    Article
  8. Review
  9. Article
  10. Article
  11. Structure of saguaro cactus virus 3' translational enhancer mimics 5' cap for eIF4E binding.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  12. Article
  13. Article
  14. Peptides Targeting RNA mChemMedChem · 2023
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Review
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.

Deepak KoiralaDepartment of Biochemistry and Molecular Biology , The University of Chicago , Chicago , Illinois 60637 , United States.ORCID 0000-0001-6424-3173
Anna LewickaDepartment of Biochemistry and Molecular Biology , The University of Chicago , Chicago , Illinois 60637 , United States.
Yelena KoldobskayaDepartment of Biochemistry and Molecular Biology , The University of Chicago , Chicago , Illinois 60637 , United States.
Hao HuangDepartment of Biochemistry and Molecular Biology , The University of Chicago , Chicago , Illinois 60637 , United States.
Joseph A PiccirilliDepartment of Biochemistry and Molecular Biology , The University of Chicago , Chicago , Illinois 60637 , United States.ORCID 0000-0002-0541-6270

Funding

Overall EvaluationP41GM103403 · NIGMS · CORNELL UNIVERSITY · PI EALICK, STEVEN E · 2012 to 2017
$14.3M
CHAPERONE-ASSISTED RNA CRYSTALLOGRAPHY - Resubmission 01R01GM102489 · NIGMS · UNIVERSITY OF CHICAGO · PI PICCIRILLI, JOSEPH ANTHONY · 2013 to 2021
$2.9M
Investigating the Catalytic Mechanism of the HDV RibozymeR01AI081987 · NIAID · UNIVERSITY OF CHICAGO · PI PICCIRILLI, JOSEPH ANTHONY · 2010 to 2014
$1.8M
NIAID NIH HHS R01 AI081987NIGMS NIH HHS P41 GM103403NIGMS NIH HHS R01 GM102489
6 · The paper itself

Abstract

Structured RNA elements within the internal ribosome entry site (IRES) of hepatitis C virus (HCV) genome hijack host cell machinery for translation initiation through a cap-independent mechanism. Here, using a phage display selection, we obtained two antibody fragments (Fabs), HCV2 and HCV3, against HCV IRES that bind the RNA with dissociation constants of 32 ± 7 nM and 37 ± 8 nM respectively, specifically recognizing the so-called junction IIIabc (JIIIabc). We used these Fabs as crystallization chaperones and determined the high-resolution crystal structures of JIIIabc-HCV2 and -HCV3 complexes at 1.81 Å and 2.75 Å resolution respectively, revealing an antiparallel four-way junction with the IIIa and IIIc subdomains brought together through tertiary interactions. The RNA conformation observed in the structures supports the structural model for this region derived from cryo-EM data for the HCV IRES-40S ribosome complex, suggesting that the tertiary fold of the RNA preorganizes the domain for interactions with the 40S ribosome. Strikingly, both Fabs and the ribosomal protein eS27 not only interact with a common subset of nucleotides within the JIIIabc but also use physiochemically similar sets of protein residues to do so, suggesting that the RNA surface is well-suited for interactions with proteins, perhaps analogous to the "hot spot" concept elaborated for protein-protein interactions. Using a rabbit reticulocyte lysate-based translation assay with a bicistronic reporter construct, we further demonstrated that Fabs HCV2 and HCV3 specifically inhibit the HCV IRES-directed translation, implicating disruption of the JIIIabc-ribosome interaction as a potential therapeutic strategy against HCV.

Indexed as

AnimalsBase SequenceHepacivirusHepatitis CHumansImmunoglobulin FragmentsInternal Ribosome Entry SitesKineticsModels, MolecularNucleic Acid ConformationPeptide Chain Elongation, TranslationalProtein BindingProtein ConformationRabbitsReticulocytesRibosomal ProteinsImmunoglobulin FragmentsInternal Ribosome Entry SitesRibosomal ProteinsRNA, Viral

Identifiers

PMID31765566
PMCPMC7919738

What OpenQuestion holds

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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.