Why Are Left-Handed G-Quadruplexes Scarce? - Publikacja - MOST Wiedzy

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Why Are Left-Handed G-Quadruplexes Scarce?

Abstrakt

G-quadruplexes (G4s) are nucleic acid structures crucial for the regulation of gene expression and genome maintenance. While they hold promise as nanodevice components, achieving desired G4 folds requires understanding the interplay between stability and structural properties, like helicity. Although right-handed G4 structures dominate the experimental data, the molecular basis for this preference over left-handed helicity is unclear. To address this, we employ all-atom molecular dynamics simulations and quantum chemical methods. Our results reveal that right-handed G4s exhibit greater thermodynamic and kinetic stability as a result of favorable sugar–phosphate backbone conformations in guanine tracts. Moreover, while hydrogen-bonding patterns influence helicity-specific G4 loop conformations, they minimally affect stability differences. We also elucidate the strong correlation between helicity and the strand progression direction, essential for G4 structures. These findings deepen our understanding of G4s, providing molecular-level insights into their structural and energetic preferences, which could inform the design of novel nanodevices.

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Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuły w czasopismach
Opublikowano w:
Journal of Physical Chemistry Letters nr 15, strony 3142 - 3148,
ISSN: 1948-7185
Język:
angielski
Rok wydania:
2024
Opis bibliograficzny:
Jurkowski M., Kogut M., Sappati S., Czub J.: Why Are Left-Handed G-Quadruplexes Scarce?// Journal of Physical Chemistry Letters -Vol. 15,iss. 11 (2024), s.3142-3148
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1021/acs.jpclett.3c03589
Weryfikacja:
Politechnika Gdańska

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