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Research Center for Complex Molecular Systems and Biomolecules
Center for Biomolecules and Complex Molecular Systems   
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Abstract of the article
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Hydration Gibbs energies of nucleic acid bases determined by Gibbs energy perturbation, continuous and hybrid approaches.

Fanfrlik, J.; Rejnek, J.; Hanus, M. etc., Collection of Czechoslovak Chemical Communications, 70 [11] 1756 - 1768 (2005)

The hydration Gibbs energies of adenine, cytosine, guanine, thymine, uracil and isoguanine are determined by the molecular dynamics-thermodynamic integration method (MD-TI) and using continuous COSMO and hybrid models. The role of solvents in the COSMO model is described by permittivity and by combining the permittivity and specific hydration of single water molecules placed on the energetically most probable position in the hybrid model. The hybrid model describes hydration similarly to the COSMO model; both the continuous methods are in good agreement with the MD-TI method. Differences are small and the use of both models can be recommended.


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