The Emerging Network of Mitochondria-Organelle Contacts.

The Emerging Network of Mitochondria-Organelle Contacts.
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DOI:
10.1016/j.molcel.2016.01.031
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发表时间:
2016-03-03
期刊:
影响因子:
16
通讯作者:
Nunnari J
Nunnari J
中科院分区:
生物学1区
文献类型:
--
作者:
Murley A;Nunnari J

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The emergence of endomembrane systems was a pivotal event in the evolution of the eukaryotic cell. Two ancient and fundamental, but evolutionarily distinct, eukaryotic endomembrane systems are mitochondria and the endoplasmic reticulum (ER). Both of these compartments are actively shaped into an extended reticular network, which enables them to communicate with each other and with other organelles distributed throughout the cell. Active protein-, lipid-, and ion-meditated interorganellar communication between mitochondria and the ER occur at points of contact at a distance of 10–30 nm between the two organelles. Recent advances, made primarily in budding yeast, have begun to describe the molecular features and mechanisms that underlie ER-mitochondria contact site formation and function. These and other studies have revealed that mitochondria make contacts with multiple organelles that possess functions beyond lipid and ion exchange. A more general model has emerged in which ion and lipid transport at interorganellar contacts sites also serve to form specialized microdomains that coordinate diverse activities, such as mitochondrial dynamics with cell stress signaling pathways. Here we highlight advances demonstrating the functional integration of activities at mitochondrial contact sites and speculate on how the functional outputs of different types of contact sites are somehow coordinated with each other and non-mitochondrial membrane contacts and pathways in the cell.
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