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Closing the Gap: Membrane Contact Sites in the Regulation of Autophagy
Stockholm University, Faculty of Science, Department of Molecular Biosciences, The Wenner-Gren Institute.ORCID iD: 0000-0002-1241-162X
Stockholm University, Faculty of Science, Department of Biochemistry and Biophysics.ORCID iD: 0000-0001-6571-2162
Stockholm University, Faculty of Science, Department of Molecular Biosciences, The Wenner-Gren Institute. University of Graz, Austria.
Number of Authors: 32020 (English)In: Cells, E-ISSN 2073-4409, Vol. 9, no 5Article, review/survey (Refereed) Published
Abstract [en]

In all eukaryotic cells, intracellular organization and spatial separation of incompatible biochemical processes is established by individual cellular subcompartments in form of membrane-bound organelles. Virtually all of these organelles are physically connected via membrane contact sites (MCS), allowing interorganellar communication and a functional integration of cellular processes. These MCS coordinate the exchange of diverse metabolites and serve as hubs for lipid synthesis and trafficking. While this of course indirectly impacts on a plethora of biological functions, including autophagy, accumulating evidence shows that MCS can also directly regulate autophagic processes. Here, we focus on the nexus between interorganellar contacts and autophagy in yeast and mammalian cells, highlighting similarities and differences. We discuss MCS connecting the ER to mitochondria or the plasma membrane, crucial for early steps of both selective and non-selective autophagy, the yeast-specific nuclear-vacuolar tethering system and its role in microautophagy, the emerging function of distinct autophagy-related proteins in organellar tethering as well as novel MCS transiently emanating from the growing phagophore and mature autophagosome.

Place, publisher, year, edition, pages
2020. Vol. 9, no 5
Keywords [en]
autophagy, ER-mitochondria encounter structure, ERMES, lipophagy, membrane contact sites, mitochondria-associated membranes, MAMs, mitophagy, nucleus-vacuole junction, pexophagy, piecemeal microautophagy of the nucleus
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:su:diva-183576DOI: 10.3390/cells9051184ISI: 000539340200118PubMedID: 32397538OAI: oai:DiVA.org:su-183576DiVA, id: diva2:1455484
Available from: 2020-07-26 Created: 2020-07-26 Last updated: 2023-10-16Bibliographically approved

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Kohler, VerenaAufschnaiter, AndreasBüttner, Sabrina

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Department of Molecular Biosciences, The Wenner-Gren InstituteDepartment of Biochemistry and Biophysics
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