高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (9): 1659.

• 研究快报 • 上一篇    下一篇

透明质酸酶的色氨酸残基修饰与荧光光谱研究

滕利荣, 初宇卓, 张晓萍, 王静, 韩松, 于笑坤, 刘兰英   

  1. 吉林大学生命科学学院, 长春130023
  • 收稿日期:2004-09-13 出版日期:2005-09-10 发布日期:2005-09-10
  • 基金资助:

    吉林大学2004年学生科技创新基金资助.

Studies on Tryptophan Residue Modification and Fluorescence Spectrum of Hyaluronidase

TENG Li-Rong, CHU Yu-Zhuo, ZHANG Xiao-Ping, WANG Jing, HAN Song, YU Xiao-Kun, LIU Lan-Ying   

  1. College of Life Science, Jilin University, Changchun 130023, China
  • Received:2004-09-13 Online:2005-09-10 Published:2005-09-10

关键词: 透明质酸酶, 色氨酸残基, 化学修饰, 荧光猝灭

Abstract: Tryptophan residues in Hyaluronidase(HAase) were modified by N-bromosuccinimide(NBS). The results indicated that there were eleven tryptophan residues in HAase and one of them was exposed, which was proved to be essential for the activity of the enzyme. The study on fluorescence quenching of HAase showed that KI could not quench all of the fluorescence from Trp residues in HAase . Acrylamide(Acr), a polarized quencher without electronic charge, could quench almost all of the fluorescence from Trp residues in HAase . The collisional quenching constants(K-D) of HAase at different concentrations of Acr were calculated in terms of Stern-Volmer equation. The results implied that some of Trp residues were buried in the interior of HAase, and the Trp residue on the surface of HAase was not located in the hydrophobic pocket.

Key words: Hyaluronidase(HAase), Tryptophan(Trp residue), Chemical modification, Fluorescence quenching

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