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Exceptional Thermodynamic Stability of DNA Duplexes Modified by Nonpolar Base Analogues Is due to Increased Stacking Interactions and Favorable Solvation: Correlated Ab Initio Calculations and Molecular Dynamics Simulations

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F06%3A00040282" target="_blank" >RIV/61388963:_____/06:00040282 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Exceptional Thermodynamic Stability of DNA Duplexes Modified by Nonpolar Base Analogues Is due to Increased Stacking Interactions and Favorable Solvation: Correlated Ab Initio Calculations and Molecular Dynamics Simulations

  • Original language description

    The geometries of DNA hexamer (5?-GGAACC-3?) and DNA 13-mer (5?-GCGTACACATGCG-3?) have been determined by molecular dynamics (MD) simulations using an empirical force field. The central canonical base pair was replaced by a pair of nonpolar base analogues, 2,2?-bipyridyl and 3-methylisocarbostyril. The total stabilization energies of the unperturbed system and the system perturbed by a base-analogue pair were comparable to the stability of both duplexes experimentally determined. This is due to large stacking interaction energy of the base-analogue self-pair which compensates for the missing hydrogen-bonding energy of the replaced adenine...thymine base pair.

  • Czech name

    Mimořádná termodynamická stabilita DNA duplexů modifikovaných nepolárními analogy je způsobena zvýšeným stackingem a příznivou solvatací: korelované ab initio výpočty a molekulová dynamika

  • Czech description

    Geometrie hexamerů DNA (5?-GGAACC-3?) a 13-merů (5?-GCGTACACATGCG-3?) byla určena pomocí molekulové dynamiky založené na empirických potenciálech. Centrální pár kanonických bazí byl nahrazen párem nepolárních analogů. Celková stabilizační energie neporušeného a porušeného systému byla srovnatelná s experimentálně určenou stabilitou obou duplexů. Je to způsobeno velkým stackingem párů analogů, který kompenzuje chybějící energii vodíkových vazeb nahraženého páru adenin-thymin.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    CF - Physical chemistry and theoretical chemistry

  • OECD FORD branch

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2006

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Chemistry - A European Journal

  • ISSN

    0947-6539

  • e-ISSN

  • Volume of the periodical

    12

  • Issue of the periodical within the volume

    13

  • Country of publishing house

    DE - GERMANY

  • Number of pages

    8

  • Pages from-to

    3587-3595

  • UT code for WoS article

  • EID of the result in the Scopus database