An enzyme controlled by light: the molecular mechanism of photoreactivity in nitrile hydratase

被引:73
作者
Endo, I [1 ]
Odaka, M [1 ]
Yohda, M [1 ]
机构
[1] Inst Phys & Chem Res, Biochem Syst Lab, Wako, Saitama 3510198, Japan
关键词
D O I
10.1016/S0167-7799(99)01303-7
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Extensive studies have revealed the molecular mechanism of the photoreactivity of nitrile hydratase from Rhodococcus sp, N-771. In the inactive enzyme, nitric oxide is bound to the non-heme ferric iron at the catalytic center, stabilized by a claw like structure formed by two post-translationally modified cysteines and a serine. The inactive nitrile hydratase is activated by the photoinduced release of the nitric oxide. This result might provide a means of designing novel photoreactive chemical compounds or proteins that would be applicable to biochips and light-controlled metabolic systems.
引用
收藏
页码:244 / 249
页数:6
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