Evidence map›Paper›PMID 22993689›Full record

ArticleScientific reports2012

Archaeal proteins Nop10 and Gar1 increase the catalytic activity of Cbf5 in pseudouridylating tRNA.

Rajashekhar Kamalampeta, Ute Kothe

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
1.1field-weighted citation impact, top 25% 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

22 citing papers in PubMed, 35 citations in OpenAlex.

  1. Interprotomer communication and functional asymmetry in H/ACA snoRNPs.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  2. Archaeal RNA processing and regulation: expanding the functional landscape.Microbiology and molecular biology reviews : MMBR · 2025
    Review
  3. Article
  4. RNA modifications in cancer.British journal of cancer · 2023
    Review
  5. Review
  6. Article
  7. Review
  8. Review
  9. Distinct Modified Nucleosides in tRNAJournal of bacteriology · 2019
    Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Biology and clinical relevance of noncoding sno/scaRNAs.Trends in cardiovascular medicine · 2018
    Review
  15. Article
  16. RNA modification enzyme TruB is a tRNA chaperone.Proceedings of the National Academy of Sciences of the United States of America · 2016
    Article
  17. Article
  18. Article
  19. Article
  20. Article
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.

Rajashekhar KamalampetaDepartment of Chemistry and Biochemistry, University of Lethbridge, Lethbridge, AB, Canada.
Ute Kothe
University of Lethbridge · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cbf5 is a pseudouridine synthase that usually acts in a guide RNA-dependent manner as part of H/ACA small ribonucleoproteins; however archaeal Cbf5 can also act independently of guide RNA in modifying uridine 55 in tRNA. This guide-independent activity of Cbf5 is enhanced by proteins Nop10 and Gar1 which are also found in H/ACA small ribonucleoproteins. Here, we analyzed the specific contribution of Nop10 and Gar1 for Cbf5-catalyzed pseudouridylation of tRNA. Interestingly, both Nop10 and Gar1 not only increase Cbf5's affinity for tRNA, but they also directly enhance Cbf5's catalytic activity by increasing the k(cat) of the reaction. In contrast to the guide RNA-dependent reaction, Gar1 is not involved in product release after tRNA modification. These results in conjunction with structural information suggest that Nop10 and Gar1 stabilize Cbf5 in its active conformation; we hypothesize that this might also be true for guide-RNA dependent pseudouridine formation by Cbf5.

Indexed as

Archaeal ProteinsEnzyme StabilityIntramolecular TransferasesKineticsProtein BindingPseudouridinePyrococcus furiosusRibonucleoproteins, Small NucleolarRNA, Small UntranslatedRNA, TransferArchaeal ProteinsIntramolecular TransferasesPseudouridinepseudouridine synthasesRibonucleoproteins, Small NucleolarRNA, Small UntranslatedRNA, Transfer

Identifiers

PMID22993689
PMCPMC3443816
OpenAlexW1977759016

What OpenQuestion holds

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LicenceCC BY-NC-ND
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.