Evidence map›Paper›PMID 15849264›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2005

Functional analysis of the pseudoknot structure in human telomerase RNA.

Jiunn-Liang Chen, Carol W Greider

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed
3.4field-weighted citation impact, top 7% 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

66 citing papers in PubMed, 130 citations in OpenAlex.

  1. Article
  2. A degenerate telomerase RNA directs telomeric DNA synthesis in lepidopteran insects.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  3. Article
  4. Review
  5. RNA secondary structure prediction by conducting multi-class classifications.Computational and structural biotechnology journal · 2025
    Article
  6. Article
  7. Advances in understanding telomerase assembly.Biochemical Society transactions · 2023
    Review
  8. Article
  9. Article
  10. Biogenesis of telomerase RNA from a protein-coding mRNA precursor.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  11. Review
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. RNAs as Regulators of Cellular Matchmaking.Frontiers in molecular biosciences · 2021
    Review
  18. The conserved structure of plant telomerase RNA provides the missing link for an evolutionary pathway from ciliates to humans.Proceedings of the National Academy of Sciences of the United States of America · 2019
    Article
  19. Article
  20. New perspectives on telomerase RNA structure and function.Wiley interdisciplinary reviews. RNA · 2018
    Review

6 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 2 institutions in 1 country.

Jiunn-Liang ChenDepartment of Chemistry and Biochemistry and School of Life Sciences, Arizona State University, Tempe, AZ 85287, USA.
Carol W Greider
Arizona State University · USJohns Hopkins University · US

Funding

STRUCTURE/FUNCTION OF TELOMERES IN MAMMALIAN AGINGR37AG009383 · NIA · JOHNS HOPKINS UNIVERSITY · PI GREIDER, CAROL W · 1997 to 2016
$6.1M
STRUCTURE AND FUNCTION OF TELOMERES IN MAMMALIAN AGINGR01AG009383 · NIA · COLD SPRING HARBOR LABORATORY · PI GREIDER, CAROL W · 1991 to 1996
–
NIA NIH HHS AG09383NIA NIH HHS R37 AG009383
6 · The paper itself

Abstract

Telomerase is essential for maintaining telomere length and chromosome stability in stem cells, germline cells, and cancer cells. The telomerase ribonucleoprotein complex consists of two essential components, a catalytic protein component and an RNA molecule that provides the template for telomeric repeat synthesis. A pseudoknot structure in the human telomerase RNA is conserved in all vertebrates and is essential for telomerase activity. It has been proposed that this highly conserved structure functions as a dynamic structure with conformational interchange between the pseudoknot and a hairpin with intraloop base pairings. To examine the structural and functional requirements of the pseudoknot structure, we made mutations in the proposed base-paired regions in the pseudoknot. Although mutations that disrupted the pseudoknot P3 helix abolished activity as predicted, mutations that disrupted the intraloop hairpin base pairings did not reduce telomerase activity, indicating that the intraloop hairpin is not required for telomerase function. This functional study thus provides evidence against the previous proposed molecular-switch model of telomerase pseudoknot function and supports a static pseudoknot structure. The mutational analysis further suggests that telomerase RNA can function independent of the proposed intermolecular pairings between pseudoknot regions on two RNA molecules.

Indexed as

Nucleic Acid ConformationBase SequenceHumansMagnetic Resonance SpectroscopyMutationRNAStructure-Activity RelationshipTelomeraseRNATelomerasetelomerase RNA

Identifiers

PMID15849264
PMCPMC1149427
OpenAlexW2155944730

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.