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Membrane dynamics in autophagosome biogenesis
Umeå University, Faculty of Medicine, Department of Medical Biochemistry and Biophysics.
2015 (English)In: Journal of Cell Science, ISSN 0021-9533, E-ISSN 1477-9137, Vol. 128, no 2, 193-205 p.Article in journal, Editorial material (Other academic) Published
Abstract [en]

Bilayered phospholipid membranes are vital to the organization of the living cell. Based on fundamental principles of polarity, membranes create borders allowing defined spaces to be encapsulated. This compartmentalization is a prerequisite for the complex functional design of the eukaryotic cell, yielding localities that can differ in composition and operation. During macroautophagy, cytoplasmic components become enclosed by a growing double bilayered membrane, which upon closure creates a separate compartment, the autophagosome. The autophagosome is then primed for fusion with endosomal and lysosomal compartments, leading to degradation of the captured material. A large number of proteins have been found to be essential for autophagy, but little is known about the specific lipids that constitute the autophagic membranes and the membrane modeling events that are responsible for regulation of autophagosome shape and size. In this Commentary, we review the recent progress in our understanding of the membrane shaping and remodeling events that are required at different steps of the autophagy pathway.

Place, publisher, year, edition, pages
The Company of Biologists LTD , 2015. Vol. 128, no 2, 193-205 p.
Keyword [en]
Atg, PtdIns3P, Autophagosome, Phagophore
National Category
Medical Biotechnology (with a focus on Cell Biology (including Stem Cell Biology), Molecular Biology, Microbiology, Biochemistry or Biopharmacy)
Identifiers
URN: urn:nbn:se:umu:diva-100292DOI: 10.1242/jcs.141036ISI: 000347973900002OAI: oai:DiVA.org:umu-100292DiVA: diva2:792646
Available from: 2015-03-04 Created: 2015-02-27 Last updated: 2017-12-04Bibliographically approved

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Carlsson, Sven R
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Department of Medical Biochemistry and Biophysics
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CiteExportLink to record
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Citation style
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  • Other style
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  • de-DE
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