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Cellular Respiration

How Pyruvate Becomes Acetyl CoA

Description

Pyruvate is prepared for the next stage of cellular respiration inside the mitochondria. After glycolysis, the charged pyruvate molecules enter the mitochondria by active transport. There, they go through three enzymatic reactions so the energy stored in pyruvate can be used by the cell.

First, p...

Transcript

在真核生物中进行糖酵解后

带电荷的丙酮酸分子通过主动转运进入线粒体

并进行三次酶促反应

这个过程是由复杂的催化剂--

丙酮酸脱氢酶复合物催化

它由三种酶组成

在第一步中,从丙酮酸中除去羧基

释放出二氧化碳

剥离的分子被氧化成乙酰基

释放出的电子被NAD +吸引

形成NADH

最后,乙酰基转移到辅酶A上

在那里它附着在硫原子上

形成乙酰辅酶A或Acetyl CoA

进入柠檬酸循环

以进一步氧化...

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