In this work, N-n-amyl-N’-(sodium p- aminobenzenesulfonate) thiourea (APT) containing saturated fatty hydrocarbon group was synthesized. Fluorescence quenching methods in combination with UV absorption spectra and mo...In this work, N-n-amyl-N’-(sodium p- aminobenzenesulfonate) thiourea (APT) containing saturated fatty hydrocarbon group was synthesized. Fluorescence quenching methods in combination with UV absorption spectra and molecule modeling method were used to study the interaction between APT and bovine serum albumin (BSA) or human se-rum albumin (HSA). The binding constants of APT with BSA or HSA were determined at different tem-peratures under the optimum conditions based on the fluorescence quenching results. The binding characteristics of APT and BSA or HSA were reported and the binding sites were obtained. The binding mode was suggested to be mainly hydrophobic interaction, which was consistent with molecular modeling study.展开更多
采用压力驱动的亲和毛细管电泳技术(P-ACE)分别研究了生理酸度条件下(p H 7.4)3种黄酮类化合物龙血素A、龙血素B和剑叶龙血素C与人血清白蛋白(HSA)之间的相互作用。利用蛋白淌度变化和药物浓度的关系,计算得出上述三者与HSA的结合常数K...采用压力驱动的亲和毛细管电泳技术(P-ACE)分别研究了生理酸度条件下(p H 7.4)3种黄酮类化合物龙血素A、龙血素B和剑叶龙血素C与人血清白蛋白(HSA)之间的相互作用。利用蛋白淌度变化和药物浓度的关系,计算得出上述三者与HSA的结合常数Ka分别为0.414×105,0.252×105,1.816×105L/mol。结果表明,P-ACE可作为研究药物与蛋白相互作用的简便可行方法。展开更多
基金the Young Backbone Teacher Support Plan of Henan Colleges and Universities （Grant No. 200470） the Department of Education of Henan Province （Grant No. 2006150012） the National Natural Science Foundation of China （Grant Nos. 20443002 , 20575077）.
文摘In this work, N-n-amyl-N’-(sodium p- aminobenzenesulfonate) thiourea (APT) containing saturated fatty hydrocarbon group was synthesized. Fluorescence quenching methods in combination with UV absorption spectra and molecule modeling method were used to study the interaction between APT and bovine serum albumin (BSA) or human se-rum albumin (HSA). The binding constants of APT with BSA or HSA were determined at different tem-peratures under the optimum conditions based on the fluorescence quenching results. The binding characteristics of APT and BSA or HSA were reported and the binding sites were obtained. The binding mode was suggested to be mainly hydrophobic interaction, which was consistent with molecular modeling study.
文摘采用压力驱动的亲和毛细管电泳技术(P-ACE)分别研究了生理酸度条件下(p H 7.4)3种黄酮类化合物龙血素A、龙血素B和剑叶龙血素C与人血清白蛋白(HSA)之间的相互作用。利用蛋白淌度变化和药物浓度的关系,计算得出上述三者与HSA的结合常数Ka分别为0.414×105,0.252×105,1.816×105L/mol。结果表明,P-ACE可作为研究药物与蛋白相互作用的简便可行方法。
