Results 81 to 90 of about 9,012 (187)

Contrasting effects of different molecular crowding environments on base‐pair opening/closing dynamics of DNA triplex structures

open access: yesThe FEBS Journal, Volume 293, Issue 16, Page 5067-5083, August 2026.
Base‐pair opening and closing regulate nucleic‐acid structure, stability, and function, but how these motions behave under intracellular molecular crowding remains unclear. Using NMR, we quantified these dynamics in a DNA triplex under two crowder‐reconstituted environments that mimic cellular crowding.
Tomoki Sakamoto   +3 more
wiley   +1 more source

Auf dem Weg zu chromoselektiven Transformationen in biologischen Systemen: Perspektiven und Herausforderungen

open access: yesAngewandte Chemie, Volume 138, Issue 31, 27 July 2026.
Die Kontrolle biologischer Systeme mit organischen Chromophoren hat sich zu einer vielversprechenden Strategie entwickelt und findet Anwendung von der chemischen Biologie bis hin zur Medizin. Die Komplexität von In‐vivo‐Systemen lässt sich jedoch nicht mit nur einer einzigen Lichtwellenlänge adäquat abbilden.
Nadja A. Simeth
wiley   +1 more source

Supramolecular DNA-based catalysis in organic solvents

open access: yesiScience
Summary: The distinct folding accompanied by its polymorphic character renders DNA G-quadruplexes promising biomolecular building blocks to construct novel DNA-based and supramolecular assemblies. However, the highly polar nature of DNA limits the use of
Gurudas Chakraborty   +10 more
doaj   +1 more source

G-Quadruplex DNA and RNA [PDF]

open access: yes, 2019
G-quadruplexes (G4s) have become one of the most exciting nucleic acid secondary structures. A noncanonical, four-stranded structure formed in guanine-rich DNA and RNA sequences, G-quadruplexes can readily form under physiologically relevant conditions and are globularly folded structures.
openaire   +2 more sources

Post-transcriptional Regulation of Nkx2-5 by RHAU in Heart Development

open access: yesCell Reports, 2015
RNA G-quadruplexes (G4s) play important roles in RNA biology. However, the function and regulation of mRNA G-quadruplexes in embryonic development remain elusive.
Junwei Nie   +12 more
doaj   +1 more source

G-Quadruplexes as An Alternative Recognition Element in Disease-Related Target Sensing

open access: yesMolecules, 2019
G-quadruplexes are made up of guanine-rich RNA and DNA sequences capable of forming noncanonical nucleic acid secondary structures. The base-specific sterical configuration of G-quadruplexes allows the stacked G-tetrads to bind certain planar molecules ...
Jeunice Ida   +5 more
doaj   +1 more source

G-Quadruplex Structures in the Human Genome as Novel Therapeutic Targets

open access: yesMolecules, 2013
G-quadruplexes are secondary structures that may form within guanine-rich nucleic acid sequences. Telomeres have received much attention in this regard since they can fold into several distinct intramolecular G-quadruplexes, leading to the rational ...
Joanna Bidzinska   +3 more
doaj   +1 more source

Age-dependent methylation in epigenetic clock CpGs is associated with G-quadruplex, co-transcriptionally formed RNA structures and tentative splice sites

open access: yesEpigenetics, 2018
Horvath’s epigenetic clock consists of 353 CpGs whose methylation levels can accurately predict the age of individuals. Using bioinformatics analysis, we investigated the conformation, energy characteristics and presence of tentative splice sites of the ...
Andigoni Malousi   +5 more
doaj   +1 more source

Complicated behavior of G-quadruplexes and evaluating G-quadruplexes' ligands in various systems mimicking cellular circumstance

open access: yesBiochemistry and Biophysics Reports, 2016
Environments surrounding G-rich sequences remarkably affect the conformations of these structures. A proper evaluation system mimicking the crowded environment in a cell with macromolecules should be developed to perform structural and functional studies
Shi-Ke Wang   +6 more
doaj   +1 more source

Tetrahelical structural family adopted by AGCGA-rich regulatory DNA regions

open access: yesNature Communications, 2017
DNA tetrahelical structures such as G-quadruplexes are known to play important roles in DNA replication and repair. Here the authors present the structure of 5′-AGCGA-3′-quadruplexes enriched in genetic regulatory regions.
Vojč Kocman, Janez Plavec
doaj   +1 more source

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