ArticleNucleic acids research2021
Folding and persistence times of intramolecular G-quadruplexes transiently embedded in a DNA duplex.
Article in Nucleic acids research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 27 citations in OpenAlex.
- Spectroscopic studies of sequence-dependent conformational transitions in asymmetric G/C rich double-stranded DNA.European biophysics journal : EBJ · 2025Article
- G4STAB: a multi-input deep learning model to predict G-quadruplex thermodynamic stability based on sequence and salt concentration.Bioinformatics (Oxford, England) · 2025Article
- Post-transcriptional control of KRAS: functional roles of 5'UTR RNA G-quadruplexes, long noncoding RNA, and hnRNPA1.Nucleic acids research · 2025Article
- The Emerging Roles of Multimolecular G-Quadruplexes in Transcriptional Regulation and Chromatin Organization.Accounts of chemical research · 2024Article
- BG4 antibody can recognize telomeric G-quadruplexes harboring destabilizing base modifications and lesions.Nucleic acids research · 2024Article
- G4access identifies G-quadruplexes and their associations with open chromatin and imprinting control regions.Nature genetics · 2023Article
- Visualization of ligand-induced c-MYC duplex-quadruplex transition and direct exploration of the altered c-MYC DNA-protein interactions in cells.Nucleic acids research · 2022Article
- Polymorphic and Higher-Order G-Quadruplexes as Possible Transcription Regulators: Novel Perspectives for Future Anticancer Therapeutic Applications.Pharmaceuticals (Basel, Switzerland) · 2022Article
- Characterization of G-Quadruplexes Folding/Unfolding Dynamics and Interactions with Proteins from Single-Molecule Force Spectroscopy.Biomolecules · 2021Review
- G-Quadruplexes and Their Ligands: Biophysical Methods to Unravel G-Quadruplex/Ligand Interactions.Pharmaceuticals (Basel, Switzerland) · 2021Review
- GGGCTA repeats can fold into hairpins poorly unfolded by replication protein A: a possible origin of the length-dependent instability of GGGCTA variant repeats in human telomeres.Nucleic acids research · 2021Article
Corrections and comments
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Authors and funding
10 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
G-quadruplex (G4) DNA structures have emerged as important regulatory elements during DNA metabolic transactions. While many in vitro studies have focused on the kinetics of G4 formation within DNA single-strands, G4 are found in vivo in double-stranded DNA regions, where their formation is challenged by the complementary strand. Since the energy of hybridization of Watson-Crick structures dominates the energy of G4 folding, this competition should play a critical role on G4 persistence. To address this, we designed a single-molecule assay allowing to measure G4 folding and persistence times in the presence of the complementary strand. We quantified both folding and unfolding rates of biologically relevant G4 sequences, such as the cMYC and cKIT oncogene promoters, human telomeres and an avian replication origin. We confirmed that G4s are found much more stable in tested replication origin and promoters than in human telomere repeats. In addition, we characterized how G4 dynamics was affected by G4 ligands and showed that both folding rate and persistence time increased. Our assay opens new perspectives for the measurement of G4 dynamics in double-stranded DNA mimicking a replication fork, which is important to understand their role in DNA replication and gene regulation at a mechanistic level.
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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.