We have studied the interaction between cefuroxime sodium (CXS) and papain at different temperatures by a fluorescence method, and confirmed that the mechanism of fluorescence quenching of CXS to papain is mainly static quenching. We also determined the binding constant K. Based on the thermodynamic functions at different temperatures, the results show that the major forces between CXS and papain are van der Waals’ forces and H bond. According to the Forster non-radiation energy transfer mechanism, we determined the binding distance between CXS and papain, and studied the confirmation effect of CXS to papain by synchronous fluorescence and UV–Vis spectroscopy. Molecular simulations show that the binding types of CXS and papain are van der Waals’ forces, hydrophobic interaction, and H-bond.
Research on Chemical Intermediates – Springer Journals
Published: Jul 4, 2012
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