Evidence map›Paper›PMID 21940894›Full record

ArticleScience (New York, N.Y.)2011

Single-base pair unwinding and asynchronous RNA release by the hepatitis C virus NS3 helicase.

Wei Cheng, Srikesh G Arunajadai, Jeffrey R Moffitt, Ignacio Tinoco, Carlos Bustamante

Abstract read
In one paragraph

Article in Science (New York, N.Y.), 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 70 papers.

0numbers the graph read from it
0cells of the map it votes in
70citing papers in PubMed
6.3field-weighted citation impact, top 2% 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

70 citing papers in PubMed, 131 citations in OpenAlex.

  1. Regulation of Pfh1 helicase activity by nucleic acid interactions and mitochondrial SSB.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Optical tweezers in single-molecule biophysics.Nature reviews. Methods primers · 2021
    Article
  14. DNA replication:Computational and structural biotechnology journal · 2021
    Review
  15. Article
  16. Asymmetric base-pair opening drives helicase unwinding dynamics.Proceedings of the National Academy of Sciences of the United States of America · 2019
    Article
  17. Article
  18. Article
  19. Article
  20. Article

10 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 1 country.

Wei ChengDepartment of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, MI 48109, USA. chengwe@umich.edu
Srikesh G Arunajadai
Jeffrey R Moffitt
Ignacio Tinoco
Carlos Bustamante
University of California, Berkeley · USColumbia University · USUniversity of Michigan–Ann Arbor · US

Funding

STRUCTURE AND FUNCTION OF NUCLEIC ACIDSR01GM010840 · NIGMS · UNIVERSITY OF CALIFORNIA BERKELEY · PI TINOCO, IGNACIO · 1985 to 2015
$7.1M
THE PHYSICAL CHEMISTRY OF NUCLEIC ACIDSR01GM032543 · NIGMS · UNIVERSITY OF OREGON · PI CARLOS Jose BUSTAMANTE · 1985 to 2026
$6.4M
Howard Hughes Medical InstituteNIGMS NIH HHS 5R01GM010840NIGMS NIH HHS 5R01GM032543NIGMS NIH HHS R01 GM010840NIGMS NIH HHS R01 GM032543
6 · The paper itself

Abstract

Nonhexameric helicases use adenosine triphosphate (ATP) to unzip base pairs in double-stranded nucleic acids (dsNAs). Studies have suggested that these helicases unzip dsNAs in single-base pair increments, consuming one ATP molecule per base pair, but direct evidence for this mechanism is lacking. We used optical tweezers to follow the unwinding of double-stranded RNA by the hepatitis C virus NS3 helicase. Single-base pair steps by NS3 were observed, along with nascent nucleotide release that was asynchronous with base pair opening. Asynchronous release of nascent nucleotides rationalizes various observations of its dsNA unwinding and may be used to coordinate the translocation speed of NS3 along the RNA during viral replication.

Indexed as

Adenosine TriphosphateAlgorithmsBase PairingDEAD-box RNA HelicasesHepacivirusKineticsModels, BiologicalNucleic Acid ConformationNucleoside-TriphosphataseOptical TweezersRNA, Double-StrandedRNA HelicasesRNA, ViralSerine EndopeptidasesViral Nonstructural ProteinsViral ProteasesAdenosine TriphosphateDEAD-box RNA HelicasesNS3 protein, hepatitis C virusNucleoside-TriphosphataseRNA, Double-StrandedRNA HelicasesRNA, ViralSerine EndopeptidasesViral Nonstructural ProteinsViral Proteases

Identifiers

PMID21940894
PMCPMC4172460
OpenAlexW1968240921

What OpenQuestion holds

Textmetadata
LicenceTDM
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.