%0 Journal Article %T Thermal investigation of Human Serum Albumin upon Interaction with Ytterbium (III) %A Mohammad Mirzaie %A Lyla Barzegar %A Gholamreza Rezaei Behbehani %A Ali Akbar Saboury %J Current Chemistry Letters %D 2012 %I Growing Science %X In this paper complexation reaction between Yb3+ and Human serum albumin is examined using isothermal titration calorimetry (ITC). The extended solvation model was used to reproduce the enthalpies of HAS+Yb3+ interactions over the whole range of Yb3+ concentrations. The binding parameters recovered from this model were attributed to the structural change of HSA. The results show that Yb3+ ions bind to HSA with three equivalent affinity sites. It was found that in the high concentrations of the ytterbium ions, the HSA structure was destabilized. %K Isothermal Titration Calorimetry %K Human Serum %K Yb3+ Ion %K Binding Parameters %U http://www.growingscience.com/ccl/Vol1/ccl_2012_5.pdf