The ferredoxin redox system - an essential electron distributing hub in the apicoplast of Apicomplexa.

The ferredoxin redox system - an essential electron distributing hub in the apicoplast of Apicomplexa.
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DOI:
10.1016/j.pt.2022.08.002
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发表时间:
2022-10
影响因子:
9.6
通讯作者:
Seeber, Frank
Seeber, Frank
中科院分区:
医学1区
文献类型:
--
作者:
Akuh, Ojo-Ajogu;Elahi, Rubayet;Prigge, Sean T.;Seeber, Frank

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顶质体是存在于顶复门大多数物种中的一种残质体,它含有铁氧还蛋白氧化还原系统,该系统为该细胞器中各种代谢途径的酶提供电子。最近在弓形虫和恶性疟原虫中的报道表明,含铁硫簇(FeS)的铁氧还蛋白分别在速殖子和血液期寄生虫中是必需的。在这里,我们回顾铁氧还蛋白的关键贡献类异戊二烯和硫辛酸的生物合成以及tRNA修饰的顶质体,突出的相似性和差异,这两个物种之间。我们还讨论了铁氧还蛋白的潜在作用,在FeS合成所需的初始还原步骤,以及最近的证据,提供了一个解释如何NADPH所需的氧化还原系统可能会产生疟原虫属。
The apicoplast, a relict plastid found in most species of the phylum Apicomplexa, harbors the ferredoxin redox system which supplies electrons to enzymes of various metabolic pathways in this organelle. Recent reports in Toxoplasma gondii and Plasmodium falciparum have shown that the iron-sulfur cluster (FeS)-containing ferredoxin is essential in tachyzoite and blood-stage parasites, respectively. Here we review ferredoxin’s crucial contribution to isoprenoid and lipoate biosynthesis as well as tRNA modification in the apicoplast, highlighting similarities and differences between the two species. We also discuss ferredoxin’s potential role in the initial reductive steps required for FeS synthesis as well as recent evidence that offers an explanation for how NADPH required by the redox system might be generated in Plasmodium spp.
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