Supported lipid bilayer repair mediated by AH peptide

Literature Information

Publication Date 2015-12-07
DOI 10.1039/C5CP06472D
Impact Factor 3.676
Authors

Anders Gunnarsson, Fredrik Höök


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Abstract

The adsorption and fusion of small unilamellar lipid vesicles on silica-based substrates such as glass is a common method used to fabricate supported lipid bilayers. Successful bilayer formation depends on a number of experimental conditions as well as on the quality of the vesicle preparation. Inevitably, a small fraction of unruptured vesicles always remains in a supported bilayer, and this kind of defect can have devastating influences on the morphological and electrical properties of the supported bilayer when used as a biosensing platform. In this paper, a simple method is reported to improve the completeness of supported bilayers by adding a vesicle rupturing peptide as a final step in the fabrication process. Peptide treatment reduces the fraction of unruptured vesicles to less than 1%, as determined by epifluorescence microscopy and quartz crystal microbalance-dissipation experiments. This step can easily be incorporated into existing procedures for preparing high-quality supported lipid bilayers.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
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Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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