Evidence map›Paper›PMID 17940139›Full record

ArticleRNA (New York, N.Y.)2007

Protein-free spliceosomal snRNAs catalyze a reaction that resembles the first step of splicing.

Saba Valadkhan, Afshin Mohammadi, Chaim Wachtel, James L Manley

Open access · bronzeAbstract read
In one paragraph

Article in RNA (New York, N.Y.), 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
3.1field-weighted citation impact, top 8% 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

28 citing papers in PubMed, 47 citations in OpenAlex.

  1. Enzymology of the metazoan tRNA ligase complex: a lifetime in cycles.Cellular and molecular life sciences : CMLS · 2026
    Review
  2. Review
  3. The ChloroplastCells · 2021
    Review
  4. Article
  5. Article
  6. Review
  7. Review
  8. Origin of spliceosomal introns and alternative splicing.Cold Spring Harbor perspectives in biology · 2014
    Article
  9. A day in the life of the spliceosome.Nature reviews. Molecular cell biology · 2014
    Review
  10. Article
  11. Article
  12. Spliceosome structure and function.Cold Spring Harbor perspectives in biology · 2011
    Review
  13. Article
  14. Review
  15. Model systems: how chemical biologists study RNA.Current opinion in chemical biology · 2009
    Review
  16. The spliceosome as ribozyme hypothesis takes a second step.Proceedings of the National Academy of Sciences of the United States of America · 2009
    Article
  17. Protein-free small nuclear RNAs catalyze a two-step splicing reaction.Proceedings of the National Academy of Sciences of the United States of America · 2009
    Article
  18. Article
  19. Review
  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

4 authors at 2 institutions in 1 country.

Saba ValadkhanCenter for RNA Molecular Biology, Case Western Reserve University School of Medicine, Cleveland, Ohio 44106, USA. saba.valadkhan@case.edu
Afshin Mohammadi
Chaim Wachtel
James L Manley
Columbia University · USUniversity School · 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

Splicing of introns from mRNA precursors is a two-step reaction performed by the spliceosome, an immense cellular machine consisting of over 200 different proteins and five small RNAs (snRNAs). We previously demonstrated that fragments of two of these RNAs, U6 and U2, can catalyze by themselves a splicing-related reaction, involving one of the two substrates of the first step of splicing, the branch site substrate. Here we show that these same RNAs can catalyze a reaction between RNA sequences that resemble the 5' splice site and the branch site, the two reactants of the first step of splicing. The reaction is dependent on the sequence of the 5' splice site consensus sequence and the catalytically essential domains of U6, and thus it resembles the authentic splicing reaction. Our results demonstrate the ability of protein-free snRNAs to recognize the sequences involved in the first splicing step and to perform splicing-related catalysis between these two pre-mRNA-like substrates.

Indexed as

RNA SplicingAnimalsBase SequenceIntronsKineticsMutationPolymerase Chain ReactionRibonucleasesRNA, CatalyticRNA, FungalRNA, MessengerRNA, Small NuclearSpliceosomesTranscription, GeneticYeastsRibonucleasesRNA, CatalyticRNA, FungalRNA, MessengerRNA, Small Nuclear

Identifiers

PMID17940139
PMCPMC2080592
OpenAlexW2079482462

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.