影像科学与光化学 ›› 1993, Vol. 11 ›› Issue (3): 228-235.DOI: 10.7517/j.issn.1674-0475.1993.03.228

• 研究论文 • 上一篇    下一篇

竹红菌乙素对人红细胞膜蛋白荧光猝灭机理的研究

乐加昌1, 秦静芬1, 孙继山1, 庞素珍1, 叶建平2   

  1. 1. 中国科学院生物物理研究所北京 北京 100101;
    2. 中国科学院感光化学研究所 北京 100101
  • 收稿日期:1992-08-01 修回日期:1993-01-29 出版日期:1993-08-20 发布日期:1993-08-20
  • 通讯作者: 乐加昌
  • 基金资助:
    国家自然科学基金;生物物理所所长基金

HYPOCRELLIN B INDUCE INTRINSIC FLUORESCENCE QUENCHING OF ERYTHROCYTE MEMBRANE PROTEINS

YUE JIA-CHANG1, QING JIN-FEN1, SUN JI-SHAN1, PANG SU-ZHEN1, YE JIAN-PING2   

  1. 1. Instirute of Biophysics, Academia Sinica, Beijing 100101, P. R. China;
    2. Institute of Photographic Chemistry, Academia Sinica, Beijimg 100101, P. R. China
  • Received:1992-08-01 Revised:1993-01-29 Online:1993-08-20 Published:1993-08-20

摘要: 本文利用人红细胞膜蛋白内源荧光(主要指色氨酸),经加入不同的竹红菌乙素之后,引起了荧光猝灭现象,根据荧光猝灭原理分别从吸收光谱,荧光光谱,稳态变温实验和瞬态荧光等技术分析了上述的猝灭过程,实验证明:该猝灭是以动态碰撞过程为主要作用机理,据此作者提出了乙素可以用于生物膜体系的蛋白质荧光猝灭剂的理由。

关键词: 荧光猝灭, 人红细胞膜, 竹红菌乙素

Abstract: In this paper, we stuied the quenching mechanism of the fluorescence of erythrocte membrane by Hypocrellin B (HB). The intrinsic fluorescence can be quenched both by Dynamic and Static quenching. The kinetic analysis of the data indicated that the dynamic quenching is a process of a charge transfer. The static quenching may be from exciplexer between HB and tryptophan. Above experiments illustaed that HB can be a new quencher of protein fluorescence in biomembranes.

Key words: fluorescence quenching, erythrocyte membrane, Hypocrellin B