Title |
Layer-by-layer cell membrane assembly
|
---|---|
Published in |
Nature Chemistry, September 2013
|
DOI | 10.1038/nchem.1765 |
Pubmed ID | |
Authors |
Sandro Matosevic, Brian M. Paegel |
Abstract |
Eukaryotic subcellular membrane systems, such as the nuclear envelope or endoplasmic reticulum, present a rich array of architecturally and compositionally complex supramolecular targets that are as yet inaccessible. Here we describe layer-by-layer phospholipid membrane assembly on microfluidic droplets, a route to structures with defined compositional asymmetry and lamellarity. Starting with phospholipid-stabilized water-in-oil droplets trapped in a static droplet array, lipid monolayer deposition proceeds as oil/water-phase boundaries pass over the droplets. Unilamellar vesicles assembled layer-by-layer support functional insertion both of purified and of in situ expressed membrane proteins. Synthesis and chemical probing of asymmetric unilamellar and double-bilayer vesicles demonstrate the programmability of both membrane lamellarity and lipid-leaflet composition during assembly. The immobilized vesicle arrays are a pragmatic experimental platform for biophysical studies of membranes and their associated proteins, particularly complexes that assemble and function in multilamellar contexts in vivo. |
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Demographic breakdown
Readers by professional status | Count | As % |
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Researcher | 45 | 17% |
Student > Master | 27 | 10% |
Student > Bachelor | 24 | 9% |
Professor | 16 | 6% |
Other | 31 | 12% |
Unknown | 43 | 16% |
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Physics and Astronomy | 24 | 9% |
Other | 33 | 12% |
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