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Domain Sorting in Giant Unilamellar Vesicles Adsorbed on Glass. | LitMetric

Domain Sorting in Giant Unilamellar Vesicles Adsorbed on Glass.

Langmuir

Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.

Published: January 2021

AI Article Synopsis

Article Abstract

Giant unilamellar vesicles (GUVs) adsorb to a solid surface and rupture to form a planar bilayer patch. These bilayer patches are used to investigate the properties and functions of biological membranes. Therefore, it is crucial to understand the mechanisms of GUV adsorption. In this study, we investigate the adsorption of phase-separated GUVs on glass using fluorescence microscopy. GUVs containing liquid-ordered (L) and liquid-disordered (L) phases underwent domain sorting after adsorption. The L domain in the unbound region migrated to the highly curved region near the edge of the adsorbed region. Additionally, the L phase grew linearly along the edge of the adsorbed region, creating a thin ring-like domain. After the domain sorting event, the GUV ruptured to form a planar bilayer patch with circular-patterned domains in the initially adsorbed area. We found that domain sorting was promoted by increasing the extent of GUV deformation. These results suggest that both the L and L domains are reorganized for stabilizing the curved bilayer region in adsorbed GUVs.

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Source
http://dx.doi.org/10.1021/acs.langmuir.0c02843DOI Listing

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