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。

Lastly, an iron molecule is added to a protoporphyrin IX via the enzyme ferrochelatase.

最后，铁分子通过亚铁螯合酶添加到原卟啉IX中。

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。

Now with sideroblastic anemia, there's defective protoporphyrin synthesis, which results in impaired incorporation of iron to form heme.

在铁粒幼细胞性贫血中，原卟啉合成存在缺陷，导致铁结合形成血红素的能力受损。