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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

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

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【作者】 周永洽张喜全贺进田梁贤振欧阳砥胡天斗谢亚宁

【Author】 Zhou Yong-Qia; ZHANG Xi-Quan; HE Jin-Tian; LIANG Xian-Zhen; OUYANG Di(Department of Chemistry, Nankai University, Tianjin, 300071)HU Tian-Dou, XIE Ya-Ning(Beijing Electron Position Collider National Laboratory, Beijing, 100039)

【机构】 南开大学化学系!天津300071北京正负电子对撞机国家实验室!北京100039

【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.

【Abstract】 It has been proved that in the Zn(Ⅱ)-HSA and Zn(Ⅱ)-BSA complexes, 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.

  • 【文献出处】 高等学校化学学报 ,CHEMICAL RESEARCH IN CHINESE UNIVERSITIES , 编辑部邮箱 ,1997年06期
  • 【分类号】O614
  • 【被引频次】29
  • 【下载频次】196
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