Aqueous hydration of nucleic acid constituents: Monte Carlo computer simulation studies.

Abstract:

:Monte Carlo computer simulations were performed on dilute aqueous solutions of thymine, cytosine, uracil, adenine, guanine, the dimethyl phosphate anion in the gauche-gauche conformation and a ribose and deoxyribose derivative. The aqueous hydration of each molecule was analysed in terms of quasi-component distribution functions based on the Proximity Criterion, and partitioned into hydrophobic, hydrophilic and ionic contributions. Color stereo views of selected hydration complexes are also presented. A preliminary discussion of the transferability of functional group coordination numbers is given. The results enable to comment on two current problems related to the hydration of nucleic acids: a) the theory of Dickerson and coworkers on the role of water in the relative stability of the A and B form of DNA and b) the idea of water bridges and filaments emerging from the computer simulation results on the hydration of DNA fragments by Clementi.

journal_name

J Biomol Struct Dyn

authors

Beveridge DL,Maye PV,Jayaram B,Ravishanker G,Mezei M

doi

10.1080/07391102.1984.10507565

subject

Has Abstract

pub_date

1984-10-01 00:00:00

pages

261-70

issue

2

eissn

0739-1102

issn

1538-0254

journal_volume

2

pub_type

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