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Spotted vesicles, striped micelles and Janus assemblies induced by ligand binding
Open accessAbstract
Selective binding of multivalent ligands within a mixture of polyvalent amphiphiles provides, in principle, a mechanism to drive domain formation in self-assemblies. Divalent cations are shown here to crossbridge polyanionic amphiphiles that thereby demix from neutral amphiphiles and form spots or rafts within vesicles as well as stripes within cylindrical micelles. Calcium and copper crossbridged domains of synthetic block copolymers or natural lipid (PIP2, phosphatidylinositol-4,5-bisphosphate) possess tunable sizes, shapes, and/or spacings that can last for years. Lateral segregation in these ‘responsive Janus assemblies’ couples weakly to curvature and proves restricted within phase diagrams to narrow regimes of pH and cation concentration that are centered near the characteristic binding constants for polyacid interactions. Remixing at high pH is surprising, but a theory for Strong Lateral Segregation (SLS) shows that counterion entropy dominates electrostatic crossbridges, thus illustrating the insights gained into ligand induced pattern formation within self-assemblies.
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Cites
Clapham, D. E. (2007) · Cell · doi:10.1016/j.cell.2007.11.028 · Cited by 4,175
Plasma membrane phosphoinositide organization by protein electrostatics
McLaughlin, S., & Murray, D. (2005) · Nature · doi:10.1038/nature04398 · Cited by 868
Cross-linked polymersome membranes: Vesicles with broadly adjustable properties
Discher, B. M., Bermudez, H., Hammer, D. A., Discher, D. E., Won, Y.-Y., & Bates, F. S. (2002) · The Journal of Physical Chemistry B · doi:10.1021/jp011958z · Cited by 262
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Janus Particles: Synthesis, Self-Assembly, Physical Properties, and Applications
Walther, A., & Müller, A. H. E. (2013) · Chemical Reviews · doi:10.1021/cr300089t · Cited by 1,769
Membrane protein sequestering by ionic protein–lipid interactions
van den Bogaart, G., Meyenberg, K., Risselada, H. J., Amin, H., Willig, K. I., Hubrich, B. E., Dier, M., Hell, S. W., Grubmüller, H., Diederichsen, U., et al. (2011) · Nature · doi:10.1038/nature10545 · Cited by 617
Metadata
- Authors
- Christian, D. A., Tian, A., Ellenbroek, W. G., Levental, I., Rajagopal, K., Janmey, P. A., Liu, A. J., Baumgart, T., & Discher, D. E.
- Venue
- Nature Materials
- Published
- 2009-09-06
- Volume
- 8
- Issue
- 10
- Pages
- 843-849
- ISSN
- 1476-1122 (ISSN-L)
- 1476-4660
- OpenAlex
- W2130000574
- Cited by
- 306
- References
- 3
- FWCI
- 14.20
- Type
- journal article
- Language
- en
- Open access
- green
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- Christian, D. A., Tian, A., Ellenbroek, W. G., Levental, I., Rajagopal, K., Janmey, P. A., Liu, A. J., Baumgart, T., & Discher, D. E. (2009). Spotted vesicles, striped micelles and Janus assemblies induced by ligand binding. Nature Materials. https://doi.org/10.1038/nmat2512
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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