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Cited by 455

The DOI matches its Crossref record; 47 of the 47 references it cites were found in a registry or an index.

G-quadruplex structures are stable and detectable in human genomic DNA

Open access
Lam, Enid Yi Ni, Beraldi, Dario, Tannahill, David, Balasubramanian, Shankar·2013·Nature Communications

Abstract

The G-quadruplex is an alternative DNA structural motif that is considered to be functionally important in the mammalian genome for transcriptional regulation, DNA replication and genome stability, but the nature and distribution of G-quadruplexes across the genome remains elusive. Here, we address the hypothesis that G-quadruplex structures exist within double-stranded genomic DNA and can be explicitly identified using a G-quadruplex-specific probe. An engineered antibody is employed to enrich for DNA containing G-quadruplex structures, followed by deep sequencing to detect and map G-quadruplexes at high resolution in genomic DNA from human breast adenocarcinoma cells. Our high sensitivity structure-based pull-down strategy enables the isolation of genomic DNA fragments bearing single, as well as multiple G-quadruplex structures. Stable G-quadruplex structures are found in sub-telomeres, gene bodies and gene regulatory regions. For a sample of identified target genes, we show that G-quadruplex-stabilizing ligands can modulate transcription. These results confirm the existence of G-quadruplex structures and their persistence in human genomic DNA. Guanine-rich DNA can form four-stranded structures called G-quadruplexes, which are thought to influence DNA replication, transcription and repair; their stability and prevalence in the genome is in need of further elucidation. Here the authors employ an antibody-based approach to sensitively map G-quadruplexes in the genome.

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Metadata

Authors
Lam, E. Y. N., Beraldi, D., Tannahill, D., & Balasubramanian, S.
Venue
Nature Communications
Published
2013-04-30
Volume
4
Issue
1
Pages
1796-1796
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2083703501
Cited by
455
References
47
FWCI
24.74
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: G-quadruplex structures are stable and detectable in human genomic DNA. https://app.cochat.ai/papers/10.1038/ncomms2792
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Lam, E. Y. N., Beraldi, D., Tannahill, D., & Balasubramanian, S. (2013). G-quadruplex structures are stable and detectable in human genomic DNA. Nature Communications. https://doi.org/10.1038/ncomms2792

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