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http://hdl.handle.net/2445/175944
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DC Field | Value | Language |
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dc.contributor.author | Corbella Morató, Marina | - |
dc.contributor.author | Voityuk, Alexander A. | - |
dc.contributor.author | Curutchet Barat, Carles E. | - |
dc.date.accessioned | 2021-04-01T05:26:57Z | - |
dc.date.available | 2021-04-01T05:26:57Z | - |
dc.date.issued | 2015-09-02 | - |
dc.identifier.issn | 1948-7185 | - |
dc.identifier.uri | http://hdl.handle.net/2445/175944 | - |
dc.description.abstract | Different mutagenic effects are generated by DNA oxidation that implies the formation of radical cation states (so-called holes) on purine nucleobases. The interaction of DNA with proteins may protect DNA from oxidative damage owing to hole transfer (HT) from the stack to aromatic amino acids. However, how protein binding affects HT dynamics in DNA is still poorly understood. Here, we report a computational study of HT in DNA complexes with methyltransferase HhaI with the aim of elucidating the molecular factors that explain why long-range DNA HT is inhibited when the glutamine residue inserted in the double helix is mutated into a tryptophan. We combine molecular dynamics, quantum chemistry, and kinetic Monte Carlo simulations and find that protein binding stabilizes the energies of the guanine radical cation states and significantly impacts the corresponding electronic couplings, thus determining the observed behavior, whereas the formation of a tryptophan radical leads to less efficient HT. | - |
dc.format.extent | 5 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | American Chemical Society | - |
dc.relation.isformatof | Versió postprint del document publicat a: https://doi.org/10.1021/acs.jpclett.5b01683 | - |
dc.relation.ispartof | Journal of Physical Chemistry Letters, 2015, vol. 6, num. 18, p. 3749-3753 | - |
dc.relation.uri | https://doi.org/10.1021/acs.jpclett.5b01683 | - |
dc.rights | (c) American Chemical Society , 2015 | - |
dc.source | Articles publicats en revistes (Farmàcia, Tecnologia Farmacèutica i Fisicoquímica) | - |
dc.subject.classification | Transferència d'energia | - |
dc.subject.classification | Transferència de càrrega | - |
dc.subject.classification | ADN | - |
dc.subject.classification | Reparació de l'ADN | - |
dc.subject.classification | Complexitat computacional | - |
dc.subject.other | Energy transfer | - |
dc.subject.other | Charge transfer | - |
dc.subject.other | DNA | - |
dc.subject.other | DNA repair | - |
dc.subject.other | Computational complexity | - |
dc.title | Single Amino Acid Mutation Controls Hole Transfer Dynamics in DNA-Methyltransferase HhaI Complexes | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/acceptedVersion | - |
dc.identifier.idgrec | 654776 | - |
dc.date.updated | 2021-04-01T05:26:58Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Farmàcia, Tecnologia Farmacèutica i Fisicoquímica) |
Files in This Item:
File | Description | Size | Format | |
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654776.pdf | 2.71 MB | Adobe PDF | View/Open |
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