Evidence map›Paper›PMID 28530653›Full record

ArticleNature2017

Structure of a pre-catalytic spliceosome.

Clemens Plaschka, Pei-Chun Lin, Kiyoshi Nagai

Abstract read
In one paragraph

Article in Nature, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 131 papers.

0numbers the graph read from it
0cells of the map it votes in
131citing papers in PubMed
14.6field-weighted citation impact, top 1% 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

131 citing papers in PubMed, 241 citations in OpenAlex.

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  13. Cryo-EM heterogeneity analysis using regularized covariance estimation and kernel regression.Proceedings of the National Academy of Sciences of the United States of America · 2025
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71 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

3 authors at 1 institution in 1 country.

Clemens Plaschka *MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, United Kingdom.
Pei-Chun Lin *MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, United Kingdom.
Kiyoshi NagaiMRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, United Kingdom.
MRC Laboratory of Molecular Biology · GB

Funding

European Research Council 693087Medical Research Council MC_U105184330
6 · The paper itself

Abstract

Intron removal requires assembly of the spliceosome on precursor mRNA (pre-mRNA) and extensive remodelling to form the spliceosome's catalytic centre. Here we report the cryo-electron microscopy structure of the yeast Saccharomyces cerevisiae pre-catalytic B complex spliceosome at near-atomic resolution. The mobile U2 small nuclear ribonucleoprotein particle (snRNP) associates with U4/U6.U5 tri-snRNP through the U2/U6 helix II and an interface between U4/U6 di-snRNP and the U2 snRNP SF3b-containing domain, which also transiently contacts the helicase Brr2. The 3' region of the U2 snRNP is flexibly attached to the SF3b-containing domain and protrudes over the concave surface of tri-snRNP, where the U1 snRNP may reside before its release from the pre-mRNA 5' splice site. The U6 ACAGAGA sequence forms a hairpin that weakly tethers the 5' splice site. The B complex proteins Prp38, Snu23 and Spp381 bind the Prp8 N-terminal domain and stabilize U6 ACAGAGA stem-pre-mRNA and Brr2-U4 small nuclear RNA interactions. These results provide important insights into the events leading to active site formation.

Indexed as

Cryoelectron MicroscopySaccharomyces cerevisiaeBase SequenceBiocatalysisCatalytic DomainIntronsModels, BiologicalModels, MolecularNuclear ProteinsProtein BindingProtein DomainsProtein StabilityRibonucleoproteins, Small NuclearRibonucleoprotein, U2 Small NuclearRibonucleoprotein, U4-U6 Small NuclearRibonucleoprotein, U5 Small NuclearBRR2 protein, S cerevisiaeNuclear ProteinsPRP38 protein, S cerevisiaePRP8 protein, S cerevisiaeRibonucleoproteins, Small NuclearRibonucleoprotein, U2 Small NuclearRibonucleoprotein, U4-U6 Small NuclearRibonucleoprotein, U5 Small NuclearRNA HelicasesRNA PrecursorsRNA, Small NuclearRNA Splice SitesRNA Splicing FactorsSaccharomyces cerevisiae ProteinsSnu23 protein, S cerevisiaeSpp381 protein, S cerevisiaeU6 small nuclear RNA

Identifiers

PMID28530653
PMCPMC5503131
OpenAlexW2614767307

What OpenQuestion holds

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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.