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BP: Fachverband Biologische Physik

BP 25: Posters: DNA/RNA and related enzymes

BP 25.3: Poster

Dienstag, 17. März 2015, 14:00–16:00, Poster A

Ectoine induced water structuring as a possible explanation for radiation protection properties — •Marc Benjamin Hahn, Tihomir Solomun, Susann Meyer, Heinz Sturm, and Hans-Jörg Kunte — BAM - Federal Inst. Mater. Res., Berlin, Germany

Compatible solutes ectoine and hydroxyectoine are known to be effective protectant against heating, freezing, high salinity and radiation damage for biomolecules and cells. It is believed that this properties are due to water-structuring-effects and their influence on hydrogen-bonds within water-clusters and biomolecules. Although the beneficial properties of ectoine are already exploited in commercial applications the underlying mechanisms remain unclear. We propose an explanation for radiation protecion properties based on our findings from ramanspectroscopic measurements. We found changes of vibrational density of states in liquid water in dependence of ectoine, hydroxyectoine and sodium chloride concentrations. This data indicates linear increased collective behaviour of hydrogene bonds with compatible solute concentration which leads to higher scattering probablities of low energy electrons.