高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (10): 1905.

• 研究论文 • 上一篇    下一篇

含芘手性探针分子与蛋白质作用机理的时间分辨荧光光谱研究

陈凯1, 翟春熙1, 李文1, 吴立新1, 吴玉清1, 张建平2, 艾希成2   

  1. 1. 吉林大学超分子结构和材料教育部重点实验室, 长春130012;
    2. 分子动态和稳态结构国家重点实验室, 中国科学院化学研究所分子科学中心, 北京100080
  • 收稿日期:2003-10-24 出版日期:2004-10-24 发布日期:2004-10-24
  • 基金资助:

    国家重点基础研究发展规划项目(批准号:G2000078102);国家自然科学基金(批准号:20003004和20373017)资助

Time-resolved Fluorescence Spectroscopic Studies on the Binding of L-[4-(1-Pyrene)butyroyl]-phenylalanine with Proteins

CHEN Kai1, ZHAI Chun-Xi1, LI Wen1, WU Li-Xin1, WU Yu-Qing1, ZHANG Jian-Ping2, AI Xi-Cheng2   

  1. 1. Key Laboratory for Supramolecular Structure and Materials of Ministry of Education, Jilin University, Changchun 130012, China;
    2. State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
  • Received:2003-10-24 Online:2004-10-24 Published:2004-10-24

摘要: 采用时间分辨荧光光谱等手段研究了手性探针分子L-[4-(1-芘基)]丁酰基苯丙氨酸(PLP)与溶菌酶(Lys)、牛血清白蛋白(BSA)和人血清白蛋白(HSA)的结合过程及机理,探讨了三氯六氨合钴(CoHA)对不同复合体系内芘基的荧光猝灭作用.结果表明,PLP在与血清白蛋白的结合过程中是以芘基插入到血清白蛋白疏水空腔中的方式与蛋白质结合的;而PLP与Lys的结合部位处在其表面的疏水部分.

关键词: 时间分辨荧光, 血清白蛋白, L-[4-(1-芘基)]丁酰基苯丙氨酸, 溶菌酶

Abstract: Time-resolved fluorescence spectra was applied to studying the binding of L-[4-(1-pyrene)butyroyl]-phenylalanine(PLP) with lysozyme(lys), bovine serum albumin(BSA) and human serum albumin(HSA). The fluorescence lifetimes of pyrenyl group quenched by using cobalt(Ⅲ) hexaamine(CoHA) in free state and in different complexes protein systems were also investigated. These results suggest that PLP binds with SAs via its pyrenyl group insertion in the hydrophobic cavity of protein, whereas it binds with Lys in the hydrophobic area on the surface.

Key words: Time-resolved fluorescence spectroscopy, Serum albumin, L-[4-(1-Pyrene)butyroyl]-phenylalanine(PLP), Lysozyme

中图分类号: 

TrendMD: