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Curvature sorting of peripheral proteins on solid-supported wavy membranes.

ABSTRACT: Cellular membrane deformation and the associated redistribution of membrane-bound proteins are important aspects of membrane function. Current model membrane approaches for studying curvature sensing are limited to positive curvatures and often require complex and delicate experimental setups. To overcome these challenges, we fabricated a wavy substrate by imposing a range of curvatures onto an adhering lipid bilayer membrane. We examined the curvature sorting of several peripheral proteins binding to the wavy membrane and observed them to partition into distinct regions of curvature. Furthermore, single-molecule imaging experiments suggested that the curvature sensing of proteins on low-curvature substrates requires cooperative interactions.

SUBMITTER: Hsieh WT

PROVIDER: S-EPMC3721505 | biostudies-literature | 2012 Sep

REPOSITORIES: biostudies-literature

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Curvature sorting of peripheral proteins on solid-supported wavy membranes.

Hsieh Wan-Ting WT Hsu Chih-Jung CJ Capraro Benjamin R BR Wu Tingting T Chen Chi-Mon CM Yang Shu S Baumgart Tobias T

Langmuir : the ACS journal of surfaces and colloids 20120823 35

Cellular membrane deformation and the associated redistribution of membrane-bound proteins are important aspects of membrane function. Current model membrane approaches for studying curvature sensing are limited to positive curvatures and often require complex and delicate experimental setups. To overcome these challenges, we fabricated a wavy substrate by imposing a range of curvatures onto an adhering lipid bilayer membrane. We examined the curvature sorting of several peripheral proteins bind ...[more]

PMID: 22881196

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