The interaction between prulifloxacin (PUFX) and human serum albumin (HSA) was investigated under simulated physiologic conditions with fluorescence spectra. The fluorescence quenching process of HSA may be mainly governed by a static quenching mechanism. The apparent binding constant K(b) between PUFX and HSA at different temperatures were 2.08+/-1.04, 2.74+/-0.50, and 4.98+/-1.61x10(8) l/mol. The thermodynamic parameters, with a negative value of DeltaG(0), revealed that the binding is a spontaneous process. A binding distance R of 1.19 nm between donor and acceptor was obtained from the Fŏrster energy transfer theory.
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Huang et al. (2010) studied this question.
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