Theoretical and experimental study of charge transfer through DNA: impact of mercury mediated T-Hg-T base pair

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00432624" target="_blank" >RIV/68378271:_____/14:00432624 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388963:_____/14:00432624 RIV/00216305:26310/14:PU108952 RIV/00216208:11320/14:10362682 RIV/68407700:21340/14:00363985

Výsledek na webu

<a href="http://dx.doi.org/10.1021/jp501986a" target="_blank" >http://dx.doi.org/10.1021/jp501986a</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/jp501986a" target="_blank" >10.1021/jp501986a</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Theoretical and experimental study of charge transfer through DNA: impact of mercury mediated T-Hg-T base pair

Popis výsledku v původním jazyce

DNA-Hg complexes may play an important role in sensing of DNA defects or in detecting of Hg presence in the environment. A fundamental way of characterizing DNA-Hg complexes is to study the way how the electric charge is transferred through the molecularchain. The main goal of this contribution was to investigate the impact of a mercury metal cation that links two thymine bases in a DNA T-T mismatched base pair (T-Hg-T) on charge transfer through the DNA molecule. We compared the charge transfer efficiencies in standard DNA, DNA with mismatched T-T base pairs and DNA with T-Hg(II)-T base pair. For this purpose we measured the temperature dependence of steady-state fluorescence and UV-VIS of the DNA molecules. The experimental results were confronted with the results obtained employing theoretical DFT methods. Generally, the efficiency of charge transfer was driven by mercury changing the spatial overlap of bases.

Název v anglickém jazyce

Theoretical and experimental study of charge transfer through DNA: impact of mercury mediated T-Hg-T base pair

Popis výsledku anglicky

DNA-Hg complexes may play an important role in sensing of DNA defects or in detecting of Hg presence in the environment. A fundamental way of characterizing DNA-Hg complexes is to study the way how the electric charge is transferred through the molecularchain. The main goal of this contribution was to investigate the impact of a mercury metal cation that links two thymine bases in a DNA T-T mismatched base pair (T-Hg-T) on charge transfer through the DNA molecule. We compared the charge transfer efficiencies in standard DNA, DNA with mismatched T-T base pairs and DNA with T-Hg(II)-T base pair. For this purpose we measured the temperature dependence of steady-state fluorescence and UV-VIS of the DNA molecules. The experimental results were confronted with the results obtained employing theoretical DFT methods. Generally, the efficiency of charge transfer was driven by mercury changing the spatial overlap of bases.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BO - Biofyzika

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Physical Chemistry B

ISSN

1520-6106

e-ISSN

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Svazek periodika

118

Číslo periodika v rámci svazku

20

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

5374-5381

Kód UT WoS článku

000336510300010

EID výsledku v databázi Scopus

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