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Myxothiazol
|Section2= |Section3= }} Myxothiazol (produced by the myxobacterium ''Myxococcus fulvus'') is an inhibitor of the mitochondrial cytochrome bc1 complex (coenzyme Q - cytochrome c reductase). Myxothiazol is a competitive inhibitor of ubiquinol, and binds at the quinol oxidation (Qo) site of the bc1 complex, blocking electron transfer to the Rieske iron-sulfur protein. Binding of myxothiazol induces a red-shift to the visible absorption spectrum of reduced haem bl. In contrast to stigmatellin, myxothiazol does not form a hydrogen bond to the Rieske iron-sulfur protein, binding instead in the 'b-proximal' region of the cytochrome b Qo site. Movement of the cytoplasmic domain of the Rieske protein is therefore unaffected by the binding of this inhibitor.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Myxothiazol」の詳細全文を読む
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