Effect of NaCl on the Exothermic and Endothermic Components of the Inverse Temperature Transition of a Model Elastin-like Polymer

Reguera, Javier; Urry, Dan W.; Parker, Timothy M.; McPherson, David T.; Rodríguez-Cabello, J. Carlos

doi:10.1021/bm060936l

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Título

Effect of NaCl on the Exothermic and Endothermic Components of the Inverse Temperature Transition of a Model Elastin-like Polymer

Autor

Rodríguez-Cabello, J. Carlos

Año del Documento

2007

Editorial

ACS

Documento Fuente

Biomacromolecules, 2007, 8(2), 354–358

Résumé

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 T-t and an increase in Delta H. 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.

ISSN

1525-7797

Revisión por pares

DOI

10.1021/bm060936l

Patrocinador

This work was supported by the “Junta de Castilla y León” (VA003C05), by the MEC (NAN 2004- 08538, MAT 2004-03484-C02-01, MAT 2003-01205), and by the Marie Curie RTN Biopolysurf (MRTN-CN-2004-005516).