文献类型：期刊文章

作　　者：何华[1] 于俊生[2] 徐珊萍[1] 周大顺[1] 刘扬[1]

机构地区：[1]中国药科大学分析室,江苏南京210009 [2]南京大学化学系,江苏南京210093

出　　处：《药学学报》

基　　金：中国药科大学校长基金项目 (C9719)

年　　份：2001

卷　　号：36

期　　号：7

起止页码：549-551

语　　种：中文

收录情况：AJ、BDHX、BDHX2000、BIOSISPREVIEWS、CAB、CAS、CSCD、CSCD2011_2012、DOAJ、EMBASE、IC、IPA、JST、PUBMED、RCCSE、RSC、SCOPUS、WOS、ZGKJHX、核心刊

摘　　要：AIM To study the interaction between ciprofloxacin and BSA in physiological condition by fluorescence spectroscopy. METHODS The affection of drug to the protein conformation was investigated. The binding constant between drug and BSA from a double reciprocal Lineweaver Burk plot was determined and the main sort of binding force was found according to the thermodynamic parameters. RESULTS The binding constants between BSA and ciprofloxacin at 26℃and 45℃ are about 10 4. At 26℃, the thermodynamic parameters of reaction between BSA and ciprofloxacin are Δ H = -49 13 kJ·mol -1 , Δ G = -26 45 kJ·mol -1 , Δ S = -75 kJ·mol -1 . The maximum wavelength of the synchronous fluorescence spectra of BSA moved from 279 nm to 289nm with the incresing of the amount of ciprofloxacin. CONCLUSION There exists fluorescence energy transfer between BSA and ciprofloxacin. The main sort of binding force between BSA and ciprofloxacin is Van der Waals′ interaction. Ciprofloxacin can be deposited and be transported by serum protein in vivo . Ciprofloxacin affects the protein conformation.

关 键 词：环丙沙星 牛血清白蛋白 荧光猝灭 结合常数  

分 类 号：R978.19]