Reconstituting ring-rafts in bud-mimicking topography of model membranes
- Seoul National Univ. (Korea, Republic of). School of Electrical Engineering
- Seoul National Univ. (Korea, Republic of). School of Mechanical and Aerospace Engineering. World Class Univ. (WCU) Program of Multiscale Mechanical Design
- Univ. of Minnesota, Minneapolis, MN (United States). Dept. of Biomedical Engineering
- Univ. of Minnesota, Minneapolis, MN (United States). Dept. of Biomedical Engineering and Chemical Engineering and Materials Science
- Univ. of Minnesota, Minneapolis, MN (United States). Dept. of Biomedical Engineering; Univ. of Minnesota, Minneapolis, MN (United States). Dept. of Biomedical Engineering and Chemical Engineering and Materials Science
- Univ. of California, Davis, CA (United States). Dept. of Biomedical Engineering and Chemical Engineering and Materials Science; Nanyang Technological Univ. (Singapore). School of Materials Science and Engineering. Centre for Biomimetic Sensor Science
During vesicular trafficking and release of enveloped viruses, the budding and fission processes dynamically remodel the donor cell membrane in a protein- or a lipid-mediated manner. In all cases, in addition to the generation or relief of the curvature stress, the buds recruit specific lipids and proteins from the donor membrane through restricted diffusion for the development of a ring-type raft domain of closed topology. Here, by reconstituting the bud topography in a model membrane, we demonstrate the preferential localization of cholesterol- and sphingomyelin-enriched microdomains in the collar band of the bud-neck interfaced with the donor membrane. The geometrical approach to the recapitulation of the dynamic membrane reorganization, resulting from the local radii of curvatures from nanometre-to-micrometre scales, offers important clues for understanding the active roles of the bud topography in the sorting and migration machinery of key signalling proteins involved in membrane budding.
- Research Organization:
- Univ. of California, Davis, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
- Grant/Contract Number:
- FG02-04ER46173
- OSTI ID:
- 1623953
- Journal Information:
- Nature Communications, Vol. 5, Issue 1; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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