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Biomacromolecules. 2007 Feb;8(2):354-8.

Effect of NaCl on the exothermic and endothermic components of the inverse temperature transition of a model elastin-like polymer.

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  • 1Departamento de Física de la Materia Condensada, E.T.S.I. Industriales, Universidad de Valladolid, Paseo del Cauce SN, 47011 Valladolid, Spain.

Abstract

TMDSC data have been employed to observe the effect of NaCl on the inverse temperature transition of the model elastin-like polymer (GVGVP)251. NaCl causes a decrease in Tt and an increase in DeltaH. The increase in enthalpy appears both in the enthalpy related with the folding of the polymer and in the contribution associated with disruption of the structured water of hydrophobic hydration. It has been suggested that the presence of NaCl may cause a better formation of water structures surrounding the apolar polymer chains.

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