Temperature effect on binding affinity and stoichiometry between some steroids and human serum albumin

• SERKAN ÖZDEMÍR ^[1] ; ENDER BÍÇER ^[1]
  1. [1] Ondokuz Mayis University Faculty of Arts and Sciences Department of Chemistry
• Localización: Journal of the Chilean Chemical Society (Boletín de la Sociedad Chilena de Química), ISSN-e 0717-6309, ISSN 0366-1644, Vol. 61, Nº. 1, 2016, págs. 2809-2815
• Idioma: inglés
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• Resumen

  • The temperature dependence of the interactions between some steroids (fusidic acid, ouabain and ethynodioldiacetate) and human serum albumin (HSA) at physiological pH (7.4) were studied systematically by square-wave voltammetry. Also, these interactions were proven by means of UV-Vis. absorptionspectroscopy and FT-IR spectroscopy techniques. The interaction parameters (binding constants and stoichiometries) at temperature range of 297.5-312.5 K weredetermined from electrochemical data. It is worthy that the temperature has played a positive role on the interactions of fusidic acid with HSA; however it hasnegative effective on the interaction parameters of HSA with ouabain or ethynodioldiacetate.