Evidence map›Paper›PMID 7623794›Full record

ArticleMolecular and cellular biology1995

A 32-nucleotide exon-splicing enhancer regulates usage of competing 5' splice sites in a differential internal exon.

M B Humphrey, J Bryan, T A Cooper, S M Berget

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in Molecular and cellular biology, 1995. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
5.8field-weighted citation impact, top 3% 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

44 citing papers in PubMed, 92 citations in OpenAlex.

  1. Article
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  7. SRp30c is a repressor of 3' splice site utilization.Molecular and cellular biology · 2002
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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

4 authors at 1 institution in 1 country.

M B HumphreyDepartment of Cell Biology, Baylor College of Medicine, Houston, Texas 77030, USA.
J Bryan
T A Cooper
S M Berget
Baylor College of Medicine · US

Funding

PROCESSING OF PREMESSENGER RNAR01GM038526 · NIGMS · BAYLOR COLLEGE OF MEDICINE · PI BERGET, SUSAN M · 1988 to 2005
$2.7M
CHEMISTRY AND LOCALIZATION OF ACTIN GELLING PROTEINSR01GM026091 · NIGMS · BAYLOR COLLEGE OF MEDICINE · PI BRYAN, JOSEPH · 1985 to 1998
–
NIGMS NIH HHS GM26091NIGMS NIH HHS GM38526
6 · The paper itself

Abstract

Large alternatively spliced internal exons are uncommon in vertebrate genes, and the mechanisms governing their usage are unknown. In this report, we examined alternative splicing of a 1-kb internal exon from the human caldesmon gene containing two regulated 5' splice sites that are 687 nucleotides apart. In cell lines normally splicing caldesmon RNA via utilization of the exon-internal 5' splice site, inclusion of the differential exon required a long purine-rich sequence located between the two competing 5' splice sites. This element consisted of four identical 32-nucleotide purine-rich repeats that resemble exon-splicing enhancers (ESE) identified in other genes. One 32-nucleotide repeat supported exon inclusion, repressed usage of the terminal 5' splice site, and functioned in a heterologous exon dependent on exon enhancers for inclusion, indicating that the caldesmon purine-rich sequence can be classified as an ESE. The ESE was required for utilization of the internal 5' splice site only in the presence of the competing 5' splice site and had no effect when placed downstream of the terminal 5' splice site. In the absence of the internal 5' splice site, the ESE activated a normally silent cryptic 5' splice site near the natural internal 5' splice site, indicating that the ESE stimulates upstream 5' splice site selection. We propose that the caldesmon ESE functions to regulate competition between two 5' splice sites within a differential internal exon.

Indexed as

Alternative SplicingBase SequenceCalmodulin-Binding ProteinsCells, CulturedExonsGenomic LibraryHumansModels, GeneticMolecular Sequence DataMutagenesisPolymerase Chain ReactionPurine NucleotidesRNA, MessengerSpecies SpecificityTissue DistributionCalmodulin-Binding ProteinsPurine NucleotidesRNA, Messenger

Identifiers

PMID7623794
PMCPMC230637
OpenAlexW2116559217

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.