Evidence map›Paper›PMID 26253743›Full record

ArticleNucleic acids research2015

GC skew is a conserved property of unmethylated CpG island promoters across vertebrates.

Stella R Hartono, Ian F Korf, Frédéric Chédin

Open access · goldAbstract read
In one paragraph

Article in Nucleic acids research, 2015. 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
3.3field-weighted citation impact, top 7% 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, 65 citations in OpenAlex.

  1. Article
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  6. Genome biology of long non-coding RNAs in humans: A virtual karyotype.Computational and structural biotechnology journal · 2025
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  7. Beyond the "Dominant" and "Recessive" Patterns of Inheritance.International journal of molecular sciences · 2024
    Article
  8. Review
  9. Article
  10. p53-dependent R-loop formation and HPV pathogenesis.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. 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

3 authors at 1 institution in 1 country.

Stella R HartonoDepartment of Molecular and Cellular Biology and Genome Center, University of California, Davis, CA 95616, United States.
Ian F KorfDepartment of Molecular and Cellular Biology and Genome Center, University of California, Davis, CA 95616, United States.
Frédéric ChédinDepartment of Molecular and Cellular Biology and Genome Center, University of California, Davis, CA 95616, United States flchedin@ucdavis.edu.
University of California, Davis · US

Funding

"R-loop formation protects CpG islands against epigenetic silencing".R01GM094299 · NIGMS · UNIVERSITY OF CALIFORNIA AT DAVIS · PI CHEDIN, FREDERIC LOUIS · 2010 to 2015
$1.5M
Howard Hughes Medical InstituteNIGMS NIH HHS GM094299NIGMS NIH HHS R01 GM094299
6 · The paper itself

Abstract

GC skew is a measure of the strand asymmetry in the distribution of guanines and cytosines. GC skew favors R-loops, a type of three stranded nucleic acid structures that form upon annealing of an RNA strand to one strand of DNA, creating a persistent RNA:DNA hybrid. Previous studies show that GC skew is prevalent at thousands of human CpG island (CGI) promoters and transcription termination regions, which correspond to hotspots of R-loop formation. Here, we investigated the conservation of GC skew patterns in 60 sequenced chordates genomes. We report that GC skew is a conserved sequence characteristic of the CGI promoter class in vertebrates. Furthermore, we reveal that promoter GC skew peaks at the exon 1/ intron1 junction and that it is highly correlated with gene age and CGI promoter strength. Our data also show that GC skew is predictive of unmethylated CGI promoters in a range of vertebrate species and that it imparts significant DNA hypomethylation for promoters with intermediate CpG densities. Finally, we observed that terminal GC skew is conserved for a subset of vertebrate genes that tend to be located significantly closer to their downstream neighbors, consistent with a role for R-loop formation in transcription termination.

Indexed as

CpG IslandsPromoter Regions, GeneticAnimalsBase CompositionBase SequenceConserved SequenceDNAExonsGenesGenomicsHumansIntronsMiceTerminator Regions, GeneticVertebratesDNA

Identifiers

PMID26253743
PMCPMC4787789
OpenAlexW1570531157

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.