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Lipid homeostasis in mitochondria

机译:在线粒体的脂质稳态

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Mitochondria are surrounded by the two membranes, the outer and inner membranes, whose lipid compositions are optimized for proper functions and structural organizations of mitochondria. Although a part of mitochondrial lipids including their characteristic lipids, phosphatidylethanolamine and cardiolipin, are synthesized within mitochondria, their precursor lipids and other lipids are transported from other organelles, mainly the ER. Mitochondrially synthesized lipids are re-distributed within mitochondria and to other organelles, as well. Recent studies pointed to the important roles of inter-organelle contact sites in lipid trafficking between different organelle membranes. Identification of Ups/PRELI proteins as lipid transfer proteins shuttling between the mitochondrial outer and inner membranes established a part of the molecular and structural basis of the still elusive intra-mitochondrial lipid trafficking.
机译:线粒体被两个膜,外膜和内膜包围,其脂质组合物针对线粒体的适当功能和结构组织进行了优化。 尽管在线粒体内合成了包括其特征脂质,磷脂酰乙醇胺和心肌素的线粒体脂质的一部分,但它们的前体脂质和其他脂质从其他细胞器输送,主要是ER。 线粒体合成的脂质在线粒体和其他细胞器中重新分布。 最近的研究指出了细胞器间接触位点在不同细胞膜之间的脂质贩运中的重要作用。 鉴定UPS / PRELI蛋白作为线粒体外膜与内膜之间的脂质转移蛋白质穿梭的一部分分子和结构基础的部分难以捉摸的线粒体内血脂贩运。

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