Anitei, M.* ; Stange, C.* ; Czupalla, C.* ; Niehage, C.* ; Schuhmann, K.* ; Sala, P. ; Czogalla, A. ; Pursche, T.* ; Coskun, Ü. ; Shevchenko, A.* ; Hoflack, B.*
Spatiotemporal control of lipid conversion, actin-based mechanical forces, and curvature sensors during clathrin/AP-1-coated vesicle biogenesis.
Cell Rep. 20, 2087-2099 (2017)
Clathrin/adaptor protein-1-coated carriers connect the secretory and the endocytic pathways. Carrier biogenesis relies on distinct protein networks changing membrane shape at the trans-Golgi network, each regulating coat assembly, F-actin-based mechanical forces, or the biophysical properties of lipid bilayers. How these different hubs are spatiotemporally coordinated remains largely unknown. Using in vitro reconstitution systems, quantitative proteomics, and lipidomics, as well as in vivo cell-based assays, we characterize the protein networks controlling membrane lipid composition, membrane shape, and carrier scission. These include PIP5K1A and phospholipase C-beta 3 controlling the conversion of PI[4]P into diacylglycerol. PIP5K1A binding to RAC1 provides a link to F-actin-based mechanical forces needed to tubulate membranes. Tubular membranes then recruit the BAR-domain-containing arfaptin-1/2 guiding carrier scission. These findings provide a framework for synchronizing the chemical/biophysical properties of lipid bilayers, F-actin-based mechanical forces, and the activity of proteins sensing membrane shape during clathrin/adaptor protein-1-coated carrier biogenesis.
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Publication type
Article: Journal article
Document type
Scientific Article
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Keywords
Ap-1 ; Pi[4,5]p2 ; Arfaptin ; Clathrin ; Diacylglycerol ; Mannose-6-phosphate Receptor ; Trans-golgi Network ; Transport Carrier; Trans-golgi Network; Mannose 6-phosphate Receptor; Adp-ribosylation Factor; Protein-kinase-c; Plasma-membrane; Phospholipase-d; Living Cells; Arfaptin 1; Trafficking; Scission
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Language
english
Publication Year
2017
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2017
ISSN (print) / ISBN
2211-1247
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2211-1247
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Volume: 20,
Issue: 9,
Pages: 2087-2099
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Cell Press
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Cambridge
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Peer reviewed
Institute(s)
Institute of Pancreatic Islet Research (IPI)
POF-Topic(s)
90000 - German Center for Diabetes Research
Research field(s)
Helmholtz Diabetes Center
PSP Element(s)
G-502600-002
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Erfassungsdatum
2017-09-20