Evidence map›Paper›PMID 23110161›Full record

ArticlePloS one2012

Exclusion of exon 2 is a common mRNA splice variant of primate telomerase reverse transcriptases.

Johanna B Withers, Tamara Ashvetiya, Karen L Beemon

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
0.5field-weighted citation impact, top 33% 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

17 citing papers in PubMed, 29 citations in OpenAlex.

  1. Biogenesis and Regulation of Telomerase during Development and Cancer.Cold Spring Harbor perspectives in biology · 2026
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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

3 authors at 1 institution in 1 country.

Johanna B WithersDepartment of Biology, The Johns Hopkins University, Baltimore, Maryland, United States of America.
Tamara Ashvetiya
Karen L Beemon
Johns Hopkins University · US

Funding

RETROVIRAL REGULATORY SEQUENCES WITHIN CODING SEQUENCESR01CA048746 · NCI · JOHNS HOPKINS UNIVERSITY · PI BEEMON, KAREN L. · 1989 to 2014
$4.6M
Oncogenes and oncogenic microRNAs in chicken tumorsR01CA124596 · NCI · JOHNS HOPKINS UNIVERSITY · PI BEEMON, KAREN L. · 2008 to 2012
$1.7M
NCI NIH HHS R01 CA048746NCI NIH HHS R01 CA124596NCI NIH HHS R01CA124596NCI NIH HHS R01CA48746
6 · The paper itself

Abstract

Telomeric sequences are added by an enzyme called telomerase that is made of two components: a catalytic protein called telomerase reverse transcriptase (TERT) and an integral RNA template (TR). Telomerase expression is tightly regulated at each step of gene expression, including alternative splicing of TERT mRNA. While over a dozen different alternative splicing events have been reported for human TERT mRNA, these were all in the 3' half of the coding region. We were interested in examining splicing of the 5' half of hTERT mRNA, especially since exon 2 is unusually large (1.3 kb). Internal mammalian exons are usually short, typically only 50 to 300 nucleotides, and most long internal exons are alternatively processed. We used quantitative RT-PCR and high-throughput sequencing data to examine the variety and quantity of mRNA species generated from the hTERT locus. We determined that there are approximately 20-40 molecules of hTERT mRNA per cell in the A431 human cell line. In addition, we describe an abundant, alternatively-spliced mRNA variant that excludes TERT exon 2 and was seen in other primates. This variant causes a frameshift and results in translation termination in exon 3, generating a 12 kDa polypeptide.

Indexed as

RNA SplicingAnimalsBase SequenceB-LymphocytesCell LineCell Line, TumorCells, CulturedCOS CellsExonsHCT116 CellsHEK293 CellsHeLa CellsHumansIsoenzymesMiceNIH 3T3 CellsIsoenzymesRNARNA, MessengerTelomerase

Identifiers

PMID23110161
PMCPMC3480478
OpenAlexW2069910729

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.