高等学校化学学报 ›› 1997, Vol. 18 ›› Issue (6): 851.

• 论文 • 上一篇    下一篇

金属-血清白蛋白的结构研究(Ⅷ)──HSA和BSA中锌离子中心的荧光EXAFS研究

周永洽1, 张喜全1, 贺进田1, 梁贤振1, 欧阳砥1, 胡天斗2, 谢亚宁2   

  1. 1. 南开大学化学系, 天津, 300071;
    2. 北京正负电子对撞机国家实验室, 北京, 100039
  • 收稿日期:1996-05-06 出版日期:1997-06-24 发布日期:1997-06-24
  • 通讯作者: 周永洽, 男, 60岁, 教授, 博士生导师.
  • 作者简介:周永洽, 男, 60岁, 教授, 博士生导师.

Studies on the Structure of Metal Serum Albumin(Ⅷ)──A Fluorescence EXAFS Study of the Zinc Ion Centers of Zn(Ⅱ)-HSA and Zn(Ⅱ)-BSA Complexes

Zhou Yong-Qia1, ZHANG Xi-Quan1, HE Jin-Tian1, LIANG Xian-Zhen1, OU YANG Di1, HU Tian-Dou2, XIE Ya-Ning2   

  1. 1. Department of Chemistry, Nankai University, Tianjin, 300071;
    2. Beijing Electron Position Collider National Laboratory, Beijing, 100039
  • Received:1996-05-06 Online:1997-06-24 Published:1997-06-24

摘要: 荧光EXAFS数据证实,在HSA和BSA中,锌离子与第一配位层原子的核间距分别为0.201nm和0.203nm,配位数近似为4,很可能为4个氮原子配位,胱氨酸硫原子参与配位的可能性基本排除.

关键词: 荧光EXAFS, 人血清白蛋白, 牛血清白蛋白, 锌离子中心

Abstract: It has been proved that in the Zn(Ⅱ)-HSAand Zn(Ⅱ)-BSAcomplexes, the in-ternuclear distance between Zn(Ⅱ) and its nearest binding atoms is 0.201 nm and 0.203 nm, the coordinate number is about four, the coordinate atoms are probably nitrogen atoms, and the possibility of sulfur of cysteine binding to Zn(Ⅱ) is basically excluded. The results are consequently discussed.

Key words: Fluorescence EXAFS, Human serum albumin, Bovine serum albumin, Zinc ion center

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