In physiological condition,the binding reaction of rutin-Eu to HSA was studied by fluorescence spectrum and electrochemistry.The binding constants KLB and distances r of rutin-Eu to HSA were calculated respectively,according to Lineweaver-Burk equation and energy transfer theory.And type of conjugation effort was estimated by the calculation of thermodynamic parameters.And the effect of rutin-Eu on the conformation of HSA was analyzed by circular dichroism(CD) and synchronous fluorescence spectra. The resul...