The isolated iron-molybdenum cofactor of nitrogenase catalyses hydrogen evolution at high potential

被引：0

作者：

Le Gall, T ^{[1
]}

Ibrahim, SK ^{[1
]}

Gormal, CA ^{[1
]}

Smith, BE ^{[1
]}

Pickett, CJ ^{[1
]}

机构：

[1] John Innes Ctr, Nitrogen Fixat Lab, Norwich NR4 7UH, Norfolk, England

来源：

CHEMICAL COMMUNICATIONS | 1999年 / 09期

关键词：

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The isolated cofactor of nitrogenase FeMoco catalyses hydrogen evolution at the high potential associated with the FeMoco(ox/semi-red) couple(E degrees = -280 mV vs. NHE, C6F5S- ligated form); analysis of the current-potential dependence of the catalysis suggests a mechanism involving rate-determining loss of H-2 from an FeMoco(H)(2)(red) intermediate (k = 3 s(-1)); the relatively slow kinetics of this step may be related to an obligatory role for hydridic intermediates in substrate reductions by nitrogenase.

引用

页码：773 / 774

页数：2

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