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Assembly of the Mitochondrial Cristae Organizer Mic10 Is Regulated by Mic26-Mic27 Antagonism and Cardiolipin

机译:线粒体嵴组织器MIC10的组装由MIC26-MIC27拮抗作用和心肌脂调节调节

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The multi-subunit mitochondrial contact site and cristae organizing system (MICOS) is a conserved protein complex of the inner mitochondrial membrane that is essential for maintenance of cristae architecture. The core subunit Mic10 forms large oligomers that build a scaffold and induce membrane curvature. The regulation of Mic10 oligomerization is poorly understood. We report that Mic26 exerts a destabilizing effect on Mic10 oligomers and thus functions in an antagonistic manner to the stabilizing subunit Mic27. The mitochondria! signature phospholipid cardiolipin shows a stabilizing function on Mic10 oligomers. Our findings indicate that the Mic10 core machinery of MICOS is regulated by several mechanisms, including interaction with cardiolipin and antagonistic actions of Mic26 and Mic27. (C) 2018 Elsevier Ltd. All rights reserved.
机译:多亚基线粒体接触部位和嵴组织系统(MICOS)是内部线粒体膜的保守蛋白质复合物,这对于维持嵴架构至关重要。 核心亚基MIC10形成大的低聚物,其构建支架并诱导膜曲率。 MIC10寡聚化的调节较差地理解。 我们认为MIC26对MIC10低聚物产生了不稳定的影响,因此以拮抗亚单元MIC27拮抗的方式起作用。 线粒体! 标志性磷脂心脂显示MIC10低聚物上的稳定功能。 我们的研究结果表明,MICO的MIC10核心机械由几种机制调节,包括与心肝脂的相互作用和MIC26和MIC27的拮抗作用。 (c)2018年elestvier有限公司保留所有权利。

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