Evidence map›Paper›PMID 23442228›Full record

ArticleGenes & development2013

Structural basis for dual roles of Aar2p in U5 snRNP assembly.

Gert Weber, Vanessa F Cristão, Karine F Santos, Sina Mozaffari Jovin, Anna C Heroven, Nicole Holton, Reinhard Lührmann, Jean D Beggs, Markus C Wahl

Abstract read
In one paragraph

Article in Genes & development, 2013. 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
–field-weighted citation impact
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.

  1. Article
  2. Review
  3. Article
  4. Structural basis of human U5 snRNP late biogenesis and recycling.Nature structural & molecular biology · 2024
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Crystallization and biochemical characterization of the human spliceosomal Aar2-Prp8(RNaseH) complex.Acta crystallographica. Section F, Structural biology communications · 2015
    Article
  19. Dramatically reduced spliceosome in Cyanidioschyzon merolae.Proceedings of the National Academy of Sciences of the United States of America · 2015
    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

9 authors.

Gert WeberFachbereich Biologie/Chemie/Pharmazie, Abteilung Strukturbiochemie, Freie Universität Berlin, D-14195 Berlin, Germany. gweber@chemie.fu-berlin.de
Vanessa F Cristão
Karine F Santos
Sina Mozaffari Jovin
Anna C Heroven
Nicole Holton
Reinhard Lührmann
Jean D Beggs
Markus C Wahl

Funding

Wellcome Trust 092076
6 · The paper itself

Abstract

Yeast U5 small nuclear ribonucleoprotein particle (snRNP) is assembled via a cytoplasmic precursor that contains the U5-specific Prp8 protein but lacks the U5-specific Brr2 helicase. Instead, pre-U5 snRNP includes the Aar2 protein not found in mature U5 snRNP or spliceosomes. Aar2p and Brr2p bind competitively to a C-terminal region of Prp8p that comprises consecutive RNase H-like and Jab1/MPN-like domains. To elucidate the molecular basis for this competition, we determined the crystal structure of Aar2p in complex with the Prp8p RNase H and Jab1/MPN domains. Aar2p binds on one side of the RNase H domain and extends its C terminus to the other side, where the Jab1/MPN domain is docked onto a composite Aar2p-RNase H platform. Known Brr2p interaction sites of the Jab1/MPN domain remain available, suggesting that Aar2p-mediated compaction of the Prp8p domains sterically interferes with Brr2p binding. Moreover, Aar2p occupies known RNA-binding sites of the RNase H domain, and Aar2p interferes with binding of U4/U6 di-snRNA to the Prp8p C-terminal region. Structural and functional analyses of phospho-mimetic mutations reveal how phosphorylation reduces affinity of Aar2p for Prp8p and allows Brr2p and U4/U6 binding. Our results show how Aar2p regulates both protein and RNA binding to Prp8p during U5 snRNP assembly.

Indexed as

Models, MolecularCell SurvivalMutationNuclear ProteinsPhosphorylationProtein BindingProtein Structure, QuaternaryProtein Structure, TertiaryRibonucleoprotein, U5 Small NuclearSaccharomyces cerevisiaeSaccharomyces cerevisiae ProteinsAar2p protein, S cerevisiaeNuclear ProteinsRibonucleoprotein, U5 Small NuclearSaccharomyces cerevisiae Proteins

Identifiers

PMID23442228
PMCPMC3605466

What OpenQuestion holds

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Registered trials

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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.