ReviewPhotochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology2020
Studying the excited electronic states of guanine rich DNA quadruplexes by quantum mechanical methods: main achievements and perspectives.
Review in Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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9 citing papers in PubMed.
- Experimental and Computational Evidence of a Stable RNA G-Triplex Structure at Physiological Temperature in the SARS-CoV-2 Genome.Angewandte Chemie (International ed. in English) · 2024Article
- Factors Affecting the Population of Excited Charge Transfer States in Adenine/Guanine Dinucleotides: A Joint Computational and Transient Absorption Study.Biomolecules · 2024Article
- Review
- Shedding Light on the Photophysics and Photochemistry of I-Motifs Using Quantum Mechanical Calculations.International journal of molecular sciences · 2023Article
- Proton-Transfer Reactions in One-Electron-Oxidized G-Quadruplexes: A Density Functional Theory Study.The journal of physical chemistry. B · 2022Article
- Electron Holes in G-Quadruplexes: The Role of Adenine Ending Groups.International journal of molecular sciences · 2021Article
- Electronic Circular Dichroism Spectra of DNA Quadruple Helices Studied by Molecular Dynamics Simulations and Excitonic Calculations including Charge Transfer States.Molecules (Basel, Switzerland) · 2021Article
- Facile room-temperature self-assembly of extended cation-free guanine-quartet network on Mo-doped Au(111) surface.Nanoscale advances · 2021Article
- Enhanced Rigidity Changes Ultraviolet Absorption: Effect of a Merocyanine Binder on G-Quadruplex Photophysics.The journal of physical chemistry letters · 2020Article
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Abstract
The main insights into the photoactivated dynamics of guanine quadruplexes (G4s) recently provided by quantum mechanical computations are concisely reviewed here. The experimental steady state absorption and circular dichroism spectra of different topologies can be reproduced and assigned. After light absorption from excited states delocalized over multiple bases, the most important decay pathways involve localization of the excitation over a single base or on two stacked guanines, excimers with different degrees of charge transfer character. Two main photochemical reactions are discussed. One involves the photodimerization of two stacked guanine bases on the 'neutral' excimer path. The other, ionization of guanine, which triggers deprotonation of the resulting cation to form (G-H2)˙ and (G-H1)˙ radicals. Both the static and dynamical properties of G4 excited states are ruled by their topology and modulated by the inner coordinated metal ions.
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