Protoporphyrinogen IX is converted a protoporphyrin IX by protoporphyrinogen oxidase.

原卟啉原IX被原卟啉原氧化酶转化为原卟啉IX。

Protoporphyrinogen IX is converted to protoporphyrin IX by protoporphyrinogen oxidase.

原卟啉原IX在原卟啉原氧化酶催化下生成原卟啉IX。

Next, coprophyrinogen III is brought back into the mitochondria and converted into protoporphyrinogen IX by coproporphyrinogen oxidase.

然后，粪卟啉原Ⅲ被运送回线粒体，并通过粪卟啉原氧化酶转化为原卟啉原IX。