Yu-Shuang LIU, Ping ZHANG, Rui-Bo ZHONG, et al. Fluorimetric study on the interaction between fluoresceinamine and bovine serum albumin. [J]. Nuclear Science and Techniques 26(3):030505(2015)
DOI:
Yu-Shuang LIU, Ping ZHANG, Rui-Bo ZHONG, et al. Fluorimetric study on the interaction between fluoresceinamine and bovine serum albumin. [J]. Nuclear Science and Techniques 26(3):030505(2015) DOI: 10.13538/j.1001-8042/nst.26.030505.
Fluorimetric study on the interaction between fluoresceinamine and bovine serum albumin
Fluorescence spectroscopy was employed to investigate the interaction between fluorophore fluoresceinamine (FA) and bovine serum albumin (BSA) under physiological conditions. In the mechanism discussion, it was proved that the fluorescence quenching of BSA by FA is a result of the formation of a BSA-FA complex. Fluorescence quenching constants were determined using the modified Stern-Volmer equation to provide a measure of the binding affinity between FA and BSA. The results of the thermodynamic parameters Δ ,G, Δ ,H, and Δ ,S, at different temperatures indicated that several kinds of interactions, except for the electrostatic interactions play cooperative roles in BSA-FA association. Furthermore, the conformation of BSA upon interaction with FA was also studied by synchrotron fluorescence spectroscopy.
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