Evidence map›Paper›PMID 19549866›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2009

Protein-free small nuclear RNAs catalyze a two-step splicing reaction.

Saba Valadkhan, Afshin Mohammadi, Yasaman Jaladat, Sarah Geisler

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
4.8field-weighted citation impact, top 4% 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

36 citing papers in PubMed, 74 citations in OpenAlex.

  1. Review
  2. Unleashing the potential of catalytic RNAs to combat mis-spliced transcripts.Frontiers in bioengineering and biotechnology · 2023
    Review
  3. Article
  4. The ChloroplastCells · 2021
    Review
  5. Article
  6. RNAs in the spliceosome: Insight from cryoEM structures.Wiley interdisciplinary reviews. RNA · 2019
    Review
  7. Article
  8. Article
  9. Review
  10. Article
  11. Origin of spliceosomal introns and alternative splicing.Cold Spring Harbor perspectives in biology · 2014
    Article
  12. Article
  13. A day in the life of the spliceosome.Nature reviews. Molecular cell biology · 2014
    Review
  14. Article
  15. Article
  16. Review
  17. Article
  18. Article
  19. Article
  20. The RNA worlds in context.Cold Spring Harbor perspectives in biology · 2012
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

Saba ValadkhanCenter for RNA Molecular Biology, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA. saba.valadkhan@case.edu
Afshin Mohammadi
Yasaman Jaladat
Sarah Geisler
Case Western Reserve University · US

Funding

Characterization of a minimal "spliceosome"R01GM078572 · NIGMS · CASE WESTERN RESERVE UNIVERSITY · PI VALADKHAN, SABA · 2006 to 2010
$1.5M
NIGMS NIH HHS GM078572NIGMS NIH HHS R01 GM078572
6 · The paper itself

Abstract

Pre-mRNA splicing is a crucial step in eukaryotic gene expression and is carried out by a highly complex ribonucleoprotein assembly, the spliceosome. Many fundamental aspects of spliceosomal function, including the identity of catalytic domains, remain unknown. We show that a base-paired complex of U6 and U2 small nuclear RNAs, in the absence of the approximately 200 other spliceosomal components, performs a two-step reaction with two short RNA oligonucleotides as substrates that results in the formation of a linear RNA product containing portions of both oligonucleotides. This reaction, which is chemically identical to splicing, is dependent on and occurs in proximity of sequences known to be critical for splicing in vivo. These results prove that the complex formed by U6 and U2 RNAs is a ribozyme and can potentially carry out RNA-based catalysis in the spliceosome.

Indexed as

BiocatalysisBase SequenceEsterificationHumansMolecular Sequence DataNucleic Acid ConformationOligonucleotidesProteinsRNA, Small NuclearRNA SplicingSpliceosomesSubstrate SpecificityOligonucleotidesProteinsRNA, Small NuclearU2 small nuclear RNAU6 small nuclear RNA

Identifiers

PMID19549866
PMCPMC2715495
OpenAlexW2082849441

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.