Evidence map›Paper›PMID 18252774›Full record

ArticleNucleic acids research2008

A novel G-quadruplex-forming GGA repeat region in the c-myb promoter is a critical regulator of promoter activity.

SunMi L Palumbo, Regan M Memmott, Diana J Uribe, Yulia Krotova-Khan, Laurence H Hurley, Scot W Ebbinghaus

Open access · goldAbstract read
In one paragraph

Article in Nucleic acids research, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 84 papers.

0numbers the graph read from it
0cells of the map it votes in
84citing papers in PubMed
7.0field-weighted citation impact, top 2% 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

84 citing papers in PubMed, 184 citations in OpenAlex.

  1. G-Quadruplexes: Structural Diversity and Emerging Roles in Biomolecular Condensation.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Review
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  6. Down-Regulation of OncogeneInternational journal of molecular sciences · 2025
    Article
  7. Review
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  11. Article
  12. STRs: Ancient Architectures of the Genome beyond the Sequence.Journal of molecular neuroscience : MN · 2021
    Review
  13. Article
  14. Article
  15. Review
  16. Review
  17. Article
  18. Article
  19. Article
  20. Review

24 more citing papers are in PubMed but not listed here.

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

6 authors at 1 institution in 1 country.

SunMi L PalumboArizona Cancer Center, University of Arizona, 1515 N. Campbell Ave., Tucson, AZ 85724-5024, USA.
Regan M Memmott
Diana J Uribe
Yulia Krotova-Khan
Laurence H Hurley
Scot W Ebbinghaus
University of Arizona · US

Funding

G-Quadruplexes as Targets for Drug DesignR01CA094166 · NCI · UNIVERSITY OF ARIZONA · PI HURLEY, LAURENCE H. · 2002 to 2007
$1.8M
NCI NIH HHS CA94166NCI NIH HHS R01 CA094166
6 · The paper itself

Abstract

The c-myb promoter contains multiple GGA repeats beginning 17 bp downstream of the transcription initiation site. GGA repeats have been previously shown to form unusual DNA structures in solution. Results from chemical footprinting, circular dichroism and RNA and DNA polymerase arrest assays on oligonucleotides representing the GGA repeat region of the c-myb promoter demonstrate that the element is able to form tetrad:heptad:heptad:tetrad (T:H:H:T) G-quadruplex structures by stacking two tetrad:heptad G-quadruplexes formed by two of the three (GGA)(4) repeats. Deletion of one or two (GGA)(4) motifs destabilizes this secondary structure and increases c-myb promoter activity, indicating that the G-quadruplexes formed in the c-myb GGA repeat region may act as a negative regulator of the c-myb promoter. Complete deletion of the c-myb GGA repeat region abolishes c-myb promoter activity, indicating dual roles of the c-myb GGA repeat element as both a transcriptional repressor and an activator. Furthermore, we demonstrated that Myc-associated zinc finger protein (MAZ) represses c-myb promoter activity and binds to the c-myb T:H:H:T G-quadruplexes. Our findings show that the T:H:H:T G-quadruplex-forming region in the c-myb promoter is a critical cis-acting element and may repress c-myb promoter activity through MAZ interaction with G-quadruplexes in the c-myb promoter.

Indexed as

Genes, mybG-QuadruplexesPromoter Regions, GeneticBinding SitesCell LineDNA-Binding ProteinsDown-RegulationHumansRepressor ProteinsTranscription FactorsTrinucleotide Repeatsc-MYC-associated zinc finger proteinDNA-Binding ProteinsRepressor ProteinsTranscription Factors

Identifiers

PMID18252774
PMCPMC2330228
OpenAlexW2123309561

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.