ENERGETIC AND DYNAMIC PROPERTIES OF WATER IN HYDRATE SHELL OF DNA
Keywords:
DNA, calorimetry, energy, DYNAMIC PROPERTIESAbstract
A new approach to studying dynamic properties of water molecules bound to biopolymer matrices has been proposed. It is based on measuring dehydration energy of biopolymer-water systems at various levels of relative humidity with using the differential scanning microcalorimetry method. Correlation between the dehydration energy and nucleotide composition of a native DNA has been found. Some characteristics of dynamic mobility of the water molecules in the hydration shells of biopolymers studied have been calculated with using experimental data. Also, systems containing dinucleotides ApA, TpT, UpU and water clusters of various sizes (20, 40 and 200 water molecules) have been studied by Monte Carlo computer simulation. Results of this simulation correlate with appropriate calorimetric data.
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