Vanadium nitrogenase: a two-hit wonder?

Vanadium nitrogenase: a two-hit wonder?
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DOI:
10.1039/c1dt11535a
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发表时间:
2012-01-28
期刊:
Dalton transactions (Cambridge, England : 2003)
影响因子:
--
通讯作者:
Ribbe MW
Ribbe MW
中科院分区:
其他
文献类型:
--
作者:
Hu Y;Lee CC;Ribbe MW

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固氮酶催化大气二氮生物转化为生物可利用的氨。钼(Mo)和钒(V)依赖性固氮酶是该金属酶家族的两个同源成员。然而,尽管它们在结构和功能上相似,但V-固氮酶的表征比其Mo-对应物的表征经历了更长和更曲折的道路。从最初发现固氮系统,到最近发现其CO还原能力,V-固氮酶已被证明是一个超过一个世纪的固氮研究中的两个奇迹。这个观点提供了一个简短的说明V-固氮酶的催化功能和结构基础,以及这种独特的金属酶的理论和实践潜力的简短讨论。
Nitrogenase catalyzes the biological conversion of atmospheric dinitrogen to bioavailable ammonia. The molybdenum (Mo)- and vanadium (V)-dependent nitrogenases are two homologous members of this metalloenzyme family. However, despite their similarities in structure and function, the characterization of V-nitrogenase has taken a much longer and more winding path than that of its Mo-counterpart. From the initial discovery of this nitrogen-fixing system, to the recent finding of its CO-reducing capacity, V-nitrogenase has proven to be a two-hit wonder in the over-a-century-long research of nitrogen fixation. This perspective provides a brief account of the catalytic function and structural basis of V-nitrogenase, as well as a short discussion of the theoretical and practical potentials of this unique metalloenzyme.
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