Evidence map›Paper›PMID 18549497›Full record

ArticleGenome biology2008

Identification of motifs that function in the splicing of non-canonical introns.

Jill I Murray, Rodger B Voelker, Kristy L Henscheid, M Bryan Warf, J Andrew Berglund

Open access · goldAbstract read
In one paragraph

Article in Genome biology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 1 pooled it
1.8field-weighted citation impact, top 15% 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, 1 synthesis or guideline pooled it, 44 citations in OpenAlex.

  1. Pooled it
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  19. Autoregulated splicing of muscleblind-like 1 (MBNL1) Pre-mRNA.The Journal of biological chemistry · 2011
    Article
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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

5 authors at 1 institution in 1 country.

Jill I MurrayDepartment of Chemistry, Institute of Molecular Biology, University of Oregon, Eugene, Oregon, USA.
Rodger B Voelker
Kristy L Henscheid
M Bryan Warf
J Andrew Berglund
University of Oregon · US

Funding

MOLECULAR BIOLOGY AND BIOPHYSICST32GM007759 · NIGMS · UNIVERSITY OF OREGON · PI NOLEN, BRADLEY J · 1985 to 2021
$8.5M
NIGMS NIH HHS GM-07759NIGMS NIH HHS T32 GM007759
6 · The paper itself

Abstract

backgroundWhile the current model of pre-mRNA splicing is based on the recognition of four canonical intronic motifs (5' splice site, branchpoint sequence, polypyrimidine (PY) tract and 3' splice site), it is becoming increasingly clear that splicing is regulated by both canonical and non-canonical splicing signals located in the RNA sequence of introns and exons that act to recruit the spliceosome and associated splicing factors. The diversity of human intronic sequences suggests the existence of novel recognition pathways for non-canonical introns. This study addresses the recognition and splicing of human introns that lack a canonical PY tract. The PY tract is a uridine-rich region at the 3' end of introns that acts as a binding site for U2AF65, a key factor in splicing machinery recruitment.

resultsHuman introns were classified computationally into low- and high-scoring PY tracts by scoring the likely U2AF65 binding site strength. Biochemical studies confirmed that low-scoring PY tracts are weak U2AF65 binding sites while high-scoring PY tracts are strong U2AF65 binding sites. A large population of human introns contains weak PY tracts. Computational analysis revealed many families of motifs, including C-rich and G-rich motifs, that are enriched upstream of weak PY tracts. In vivo splicing studies show that C-rich and G-rich motifs function as intronic splicing enhancers in a combinatorial manner to compensate for weak PY tracts.

conclusionThe enrichment of specific intronic splicing enhancers upstream of weak PY tracts suggests that a novel mechanism for intron recognition exists, which compensates for a weakened canonical pre-mRNA splicing motif.

Indexed as

IntronsRNA SplicingHeLa CellsHumansMutagenesisNuclear ProteinsPhosphatidylcholine-Sterol O-AcyltransferaseRibonucleoproteinsRNA, MessengerSplicing Factor U2AFNuclear ProteinsPhosphatidylcholine-Sterol O-AcyltransferaseRibonucleoproteinsRNA, MessengerSplicing Factor U2AFU2AF2 protein, human

Identifiers

PMID18549497
PMCPMC2481429
OpenAlexW2123884203

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.