双铁植物型和藻类铁氧化还原蛋白的氧化还原电位。一种静电模型。
The redox potentials of the two-iron plant and algal ferredoxins. An electrostatic model.
作者信息
Kassner R J, Yang W
出版信息
Biochem J. 1973 Jun;133(2):283-7. doi: 10.1042/bj1330283.
Abstract
The two-iron-sulphur co-ordination centre in plant and algal ferredoxins is considered as a collection of charged ions whose net negative charge is twice that of the one-iron-sulphur protein rubredoxin. Calculation of the electrostatic free-energy changes for reduction of the two types of proteins indicates that the redox potential of the two-iron-sulphur proteins should be more negative than that of the one-iron-sulphur protein and that in biological systems the ferredoxins should function as one-electron transfer proteins.
摘要
植物和藻类铁氧化还原蛋白中的双铁硫配位中心被认为是带电离子的集合，其净负电荷是单铁硫蛋白红氧还蛋白的两倍。对这两种蛋白质还原过程中静电自由能变化的计算表明，双铁硫蛋白的氧化还原电位应比单铁硫蛋白的更负，并且在生物系统中，铁氧化还原蛋白应作为单电子转移蛋白发挥作用。
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