Coenzyme Q (ubiquinone) A coenzyme that is an essential component of the respiratory electron-transport chain.

Q：一种在呼吸作用电子传递链中起重要作用。

Their biological activity is generally attributable to inhibition of NADH: ubiquinone oxidoreductase activity and thereby mitochondrial respiration.

一类化合物所以具有很虫活性，是由于对还原型烟酰胺腺嘌呤二核甘酸(NADH)抑制作用而阻断了线粒体呼吸。