Evidence map›Paper›PMID 7664740›Full record

ArticleThe EMBO journal1995

In vitro reconstitution of mammalian U2 and U5 snRNPs active in splicing: Sm proteins are functionally interchangeable and are essential for the formation of functional U2 and U5 snRNPs.

V Ségault, C L Will, B S Sproat, R Lührmann

Open access · bronzeAbstract read
In one paragraph

Article in The EMBO journal, 1995. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed
2.6field-weighted citation impact, top 10% 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

49 citing papers in PubMed, 77 citations in OpenAlex.

  1. Article
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  4. Regulation and function of CMTR1-dependent mRNA cap methylation.Wiley interdisciplinary reviews. RNA · 2017
    Review
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  12. RNA modifications: a mechanism that modulates gene expression.Methods in molecular biology (Clifton, N.J.) · 2010
    Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Cross-talk between snurportin1 subdomains.Molecular biology of the cell · 2005
    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 1 institution in 1 country.

V SégaultInstitut für Molekularbiologie und Tumorforschung, Philpps Universität Marburg, Göttingen, Germany.
C L Will
B S Sproat
R Lührmann
Phillips University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

An in vitro reconstitution/splicing complementation system has been developed which has allowed the investigation of the role of mammalian U2 and U5 snRNP components in splicing. U2 or U5 snRNP cores are first reconstituted from purified native snRNP core proteins and snRNA in the absence of cellular extract and are subsequently added to splicing extracts depleted of either U2 or U5 snRNP. When snRNPs reconstituted with HeLa U2 or U5 snRNA were added to U2- or U5-depleted nuclear extract, splicing was complemented. Addition of naked snRNA, on the other hand, did not restore splicing, demonstrating that the core proteins are essential for both U2 and U5 snRNP functions in splicing. Hybrid U2 or U5 snRNPs, reconstituted with core proteins isolated from U1 or U2 snRNPs, were equally active in splicing complementation, indicating that the snRNP core proteins are functionally interchangeable. U5 snRNPs reconstituted from in vitro transcribed U5 snRNA restored splicing to a level identical to that observed with particles reconstituted from authentic HeLa U5 snRNA. In contrast, splicing could not be restored to U2-depleted extract by the addition of snRNPs reconstituted from synthetic U2 snRNA, suggesting that U2 snRNA base modifications are essential for U2 snRNP function.

Indexed as

Base SequenceCell ExtractsHeLa CellsHumansMolecular Sequence DataOligonucleotides, AntisensePseudouridineRibonucleoproteins, Small NuclearRibonucleoprotein, U2 Small NuclearRibonucleoprotein, U5 Small NuclearRNA CapsRNA, MessengerRNA, Small NuclearRNA SplicingSpliceosomesCell ExtractsOligonucleotides, AntisensePseudouridineRibonucleoproteins, Small NuclearRibonucleoprotein, U2 Small NuclearRibonucleoprotein, U5 Small NuclearRNA CapsRNA, MessengerRNA, Small Nuclear

Identifiers

PMID7664740
PMCPMC394479
OpenAlexW1887299981

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.