Evidence map›Paper›PMID 23345524›Full record

ArticleRNA (New York, N.Y.)2013

Rearrangements within human spliceosomes captured after exon ligation.

Janine O Ilagan, Robert J Chalkley, A L Burlingame, Melissa S Jurica

Abstract read
In one paragraph

Article in RNA (New York, N.Y.), 2013. 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
–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

28 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. The SF3b complex: splicing and beyond.Cellular and molecular life sciences : CMLS · 2020
    Review
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. Review
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.

Janine O IlaganDepartment of Molecular Cell and Developmental Biology, University of California Santa Cruz, Santa Cruz, California 95064, USA.
Robert J Chalkley
A L Burlingame
Melissa S Jurica

Funding

YEAST THREONINE &SERINE KINASESP41RR001614 · NCRR · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI ORTIZ DE MONTELLANO, PAUL R · 1985 to 2011
$24.1M
UNIVERSITY OF CALIFORNIA, SANTA CRUZ IMSD PROGRAMR25GM058903 · NIGMS · UNIVERSITY OF CALIFORNIA SANTA CRUZ · PI JURICA, MELISSA S · 1999 to 2019
$12.2M
Bio-Organic Biomedical Mass Spectromy ResourceP41GM103481 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI BURLINGAME, ALMA L · 2012 to 2015
$6.4M
Training Program/Molecular/Cell/Developmental BiologyT32GM008646 · NIGMS · UNIVERSITY OF CALIFORNIA SANTA CRUZ · PI STROME, SUSAN · 1999 to 2018
$3.7M
Interpreting the Structure of the SpliceosomeR01GM072649 · NIGMS · UNIVERSITY OF CALIFORNIA SANTA CRUZ · PI JURICA, MELISSA S · 2006 to 2016
$2.7M
PURCHASE OF LTQ FT-ICR HYBRID MASS SPECTROMETER: (HEI) PROTEOMICSS10RR019934 · NCRR · UNIVERSITY OF CALIFORNIA SAN FRANCISCO · PI BURLINGAME, ALMA L · 2004 to 2004
$1.0M
PURCHASE OF MICRO LC/NANO ESIQQTOF MASS SPECTROMETERS10RR015804 · NCRR · UNIVERSITY OF CALIFORNIA SAN FRANCISCO · PI BURLINGAME, ALMA L · 2001 to 2001
$500k
NCRR NIH HHS P41 RR001614NCRR NIH HHS RR001614NCRR NIH HHS RR015804NCRR NIH HHS RR019934NCRR NIH HHS S10 RR015804NCRR NIH HHS S10 RR019934NIGMS NIH HHS P41 GM103481NIGMS NIH HHS P41GM103481NIGMS NIH HHS R01 GM072649NIGMS NIH HHS R01GM72649NIGMS NIH HHS R25 GM058903NIGMS NIH HHS R25GM058903NIGMS NIH HHS T32 GM008646NIGMS NIH HHS T32GM08646
6 · The paper itself

Abstract

In spliceosomes, dynamic RNA/RNA and RNA/protein interactions position the pre-mRNA substrate for the two chemical steps of splicing. Not all of these interactions have been characterized, in part because it has not been possible to arrest the complex at clearly defined states relative to chemistry. Previously, it was shown in yeast that the DEAD/H-box protein Prp22 requires an extended 3' exon to promote mRNA release from the spliceosome following second-step chemistry. In line with that observation, we find that shortening the 3' exon blocks cleaved lariat intron and mRNA release in human splicing extracts, which allowed us to stall human spliceosomes in a new post-catalytic complex (P complex). In comparison to C complex, which is blocked at a point following first-step chemistry, we detect specific differences in RNA substrate interactions near the splice sites. These differences include extended protection across the exon junction and changes in protein crosslinks to specific sites in the 5' and 3' exons. Using selective reaction monitoring (SRM) mass spectrometry, we quantitatively compared P and C complex proteins and observed enrichment of SF3b components and loss of the putative RNA-dependent ATPase DHX35. Electron microscopy revealed similar structural features for both complexes. Notably, additional density is present when complexes are chemically fixed, which reconciles our results with previously reported C complex structures. Our ability to compare human spliceosomes before and after second-step chemistry has opened a new window to rearrangements near the active site of spliceosomes, which may play roles in exon ligation and mRNA release.

Indexed as

ExonsGene RearrangementHumansMicroscopy, ElectronRNA, MessengerRNA PrecursorsRNA Splice SitesRNA SplicingSaccharomyces cerevisiaeSpliceosomesRNA, MessengerRNA PrecursorsRNA Splice Sites

Identifiers

PMID23345524
PMCPMC3677250

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.