The structure of metallo-DNA with consecutive thymine-HgII-thymine base pairs explains positive entropy for the metallo base pair formation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10193443" target="_blank" >RIV/00216208:11320/13:10193443 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1093/nar/gkt1344" target="_blank" >http://dx.doi.org/10.1093/nar/gkt1344</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/nar/gkt1344" target="_blank" >10.1093/nar/gkt1344</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The structure of metallo-DNA with consecutive thymine-HgII-thymine base pairs explains positive entropy for the metallo base pair formation

Popis výsledku v původním jazyce

We have determined the three-dimensional (3D) structure of DNA duplex that includes tandem HgII-mediated T-T base pairs (thymine-HgII-thymine, T-HgII-T) with NMR spectroscopy in solution. This is the first 3D structure of metallo-DNA (covalently metallated DNA) composed exclusively of 'NATURAL' bases. The T-HgII-T base pairs whose chemical structure was determined with the 15N NMR spectroscopy were well accommodated in a B-form double helix, mimicking normal Watson-Crick base pairs. The Hg atoms alignedalong DNA helical axis were shielded from the bulk water. The complete dehydration of Hg atoms inside DNA explained the positive reaction entropy (?S) for the T-HgII-T base pair formation. The positive ?S value arises owing to the HgII dehydration, which was approved with the 3D structure. The 3D structure explained extraordinary affinity of thymine towards HgII and revealed arrangement of T-HgII-T base pairs in metallo-DNA.

Název v anglickém jazyce

The structure of metallo-DNA with consecutive thymine-HgII-thymine base pairs explains positive entropy for the metallo base pair formation

Popis výsledku anglicky

We have determined the three-dimensional (3D) structure of DNA duplex that includes tandem HgII-mediated T-T base pairs (thymine-HgII-thymine, T-HgII-T) with NMR spectroscopy in solution. This is the first 3D structure of metallo-DNA (covalently metallated DNA) composed exclusively of 'NATURAL' bases. The T-HgII-T base pairs whose chemical structure was determined with the 15N NMR spectroscopy were well accommodated in a B-form double helix, mimicking normal Watson-Crick base pairs. The Hg atoms alignedalong DNA helical axis were shielded from the bulk water. The complete dehydration of Hg atoms inside DNA explained the positive reaction entropy (?S) for the T-HgII-T base pair formation. The positive ?S value arises owing to the HgII dehydration, which was approved with the 3D structure. The 3D structure explained extraordinary affinity of thymine towards HgII and revealed arrangement of T-HgII-T base pairs in metallo-DNA.

Druh

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

CEP obor

BJ - Termodynamika

OECD FORD obor

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Projekt

<a href="/cs/project/GAP205%2F10%2F0228" target="_blank" >GAP205/10/0228: Struktura a dynamika bioinorganických komplexů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Nucleic Acids Research [online]

ISSN

1362-4962

e-ISSN

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Svazek periodika

Neuveden

Číslo periodika v rámci svazku

December 26, 2013

Stát vydavatele periodika

TR - Turecká republika

Počet stran výsledku

6

Strana od-do

1-6

Kód UT WoS článku

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EID výsledku v databázi Scopus

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