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To Mia or not to Mia: stepwise evolution of the mitochondrial intermembrane space disulfide relay

机译:对米娅还是不对米娅:线粒体膜间空间二硫键的逐步演变

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The disulfide relay system found in the intermembrane space (IMS) of mitochondria is an essential pathway for the import and oxidative folding of IMS proteins. Erv1, an essential member of this pathway, has been previously found to be ubiquitously present in mitochondria-containing eukaryotes. However, the other essential protein, Mia40, was found to be absent or not required in some organisms, raising questions about how the disulfide relay functions in these organisms. A recent study published in BMC Biology demonstrates for the first time that some Erv1 proteins can function in oxidative folding independently of a Mia40 protein, providing for the first time strong evidence that the IMS disulfide relay evolved in a stepwise manner. See research article: 10.1186/s12915-017-0445-8
机译:线粒体内膜空间(IMS)中发现的二硫键中继系统是IMS蛋白质导入和氧化折叠的重要途径。先前已发现Erv1是该途径的重要成员,普遍存在于含线粒体的真核生物中。但是,发现某些生物中不存在或不需要其他必需蛋白质Mia40,这引发了有关这些生物中二硫键的作用方式的疑问。 BMC Biology上发表的一项最新研究首次证明某些Erv1蛋白可以独立于Mia40蛋白而在氧化折叠中起作用,这首次提供了有力的证据证明IMS二硫键逐步形成。查看研究文章:10.1186 / s12915-017-0445-8

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