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猪脾铁蛋白电子隧道特性及释放铁途径的研究
引用本文:黄河清,林庆梅,张凤章,陈中,雒占波,许良树.猪脾铁蛋白电子隧道特性及释放铁途径的研究[J].中国生物化学与分子生物学报,1999,15(1):10-14.
作者姓名:黄河清  林庆梅  张凤章  陈中  雒占波  许良树
作者单位:厦门大学生物学系,厦门大学环境科学研究中心
基金项目:国家自然科学基金,国家教育部留学回国人员基金
摘    要:维生素C和连二亚硫酸钠混合后只能加速猪脾铁蛋白释放铁的速率,并不能使铁蛋白释放铁的动力学途径由复杂转化为简单.而单独维生素C却能利用蛋白壳上的电子隧道传递电子,迫使铁蛋白以二分之一的反应级数方式释放整体铁核的铁并起着抗磷酸盐阻遏释放铁速率的作用,简化释放铁的途径.对维生素C参与铁蛋白释放铁的机理进行了讨论.

关 键 词:猪脾铁蛋白  电子隧道  动力学  蛋白壳调节作用  
收稿时间:1999-02-20

Studies on Characteristics of Electron Tunnel and Pathway of Iron Release from Pig Spleen Ferritin
HUANG Heqing,LIN Qingmei,ZHANG Fengzhang,CHEN Zhong,LOU Zhanbo,XU Liangshu.Studies on Characteristics of Electron Tunnel and Pathway of Iron Release from Pig Spleen Ferritin[J].Chinese Journal of Biochemistry and Molecular Biology,1999,15(1):10-14.
Authors:HUANG Heqing  LIN Qingmei  ZHANG Fengzhang  CHEN Zhong  LOU Zhanbo  XU Liangshu
Institution:(Department of Biology,Xiamen University,Xiamen 361005; ** The Reseach Center of Environment Science,Xiamen University,Xiamen 361005
Abstract:Rate of iron release from horse spleen ferritin was only accelerated by mixing both vitamin C and dithionite,which could hardly transfer kinetic pathway that the ferritin released iron could from complexity to simplicity.However,vitamin C alone was able to utilize the electrons tunnel on the protein shell for transferring electron to make the ferritin release the iron of whole core as a form of half order reaction,playing a role in resisting the effect phosphate on inhibition rate of iron release,and simplifying the pathway of iron release.The mechanism involving in the process of ferritin releasing iron with the vitamin C reduction was suggested.
Keywords:Pig spleen ferritin  Electron tunnel  Kinetics  Regulation action of protein shell  
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