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• W2576122014 abstract "A facile and reproducible preparation of surface-supported lipid bilayers is essential for fundamental membrane research and biotechnological applications. We demonstrate that multilamellar vesicles fuse to molecular-anchor-grafted surfaces yielding low-defect-density, tethered bilayer membranes. Continuous bilayers are formed within 10 min, while the electrically insulating bilayers with < 0.1 μm − 2 defect density can be accomplished within 60 min. Surface plasmon resonance spectroscopy indicates that an amount of lipid material transferred from vesicles to a surface is inversely proportional to the density of an anchor, while the total amount of lipid that includes tethered and transferred lipid remains constant within 5% standard error. This attests for the formation of intact bilayers independent of the tethering agent density. Neutron reflectometry (NR) revealed the atomic level structural details of the tethered bilayer showing, among other things, that the total thickness of the hydrophobic slab of the construct was 3.2 nm and that the molar fraction of cholesterol in lipid content is essentially the same as the molar fraction of cholesterol in the multilamellar liposomes. NR also indicated the formation of an overlayer with an effective thickness of 1.9 nm. These overlayers may be easily removed by a single rinse of the tethered construct with 30% ethanol solution. Fast assembly and low residual defect density achievable within an hour of fusion makes our tethered bilayer methodology an attractive platform for biosensing of membrane damaging agents, such as pore forming toxins. • Multilamellar vesicles fuse to surfaces yielding tethered bilayer membranes. • < 0.1 μm − 2 defect density bilayers are accomplished within 60 min. • Structure and function of multilamellar vesicle-fused bilayers were evaluated. • Tethered bilayers can be used to probe protein membrane interactions." @default.
• W2576122014 created "2017-01-26" @default.
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• W2576122014 date "2017-05-01" @default.
• W2576122014 modified "2023-10-16" @default.
• W2576122014 title "Fast formation of low-defect-density tethered bilayers by fusion of multilamellar vesicles" @default.
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• W2576122014 doi "https://doi.org/10.1016/j.bbamem.2017.01.015" @default.
• W2576122014 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/28088448" @default.
• W2576122014 hasPublicationYear "2017" @default.
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