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Direct Observation of Morphological Tranformation from Twisted Ribbons into Helical Ribbons
Open accessAbstract
We report on the direct observation of a nanostructural transformation from a twisted ribbon to a helical ribbon in supramolecular assemblies of peptide amphiphiles. Using cryogenic electron microscopy, a peptide amphiphile molecule containing aromatic residues was found to first assemble into short twisted ribbons in the time range of seconds, which then elongate in the time scale of minutes, and finally transform into helical ribbons over the course of weeks. By synthesizing an analogous molecule without the aromatic side groups, it was found that a cylindrical nanostructure is formed that does not undergo any transitions during the same time period. The study of metastable states in peptide aggregation can contribute to our understanding of amyloid-related diseases, such as Alzheimer's disease.
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Cited by
Supramolecular Chemistry and Self-Assembly in Organic Materials Design
Stupp, S. I., & Palmer, L. C. (2014) · Chemistry of Materials · doi:10.1021/cm403028b · Cited by 513
Self-citationShape selection of twist-nematic-elastomer ribbons
Sawa, Y., Ye, F., Urayama, K., Takigawa, T., Gimenez-Pinto, V., Selinger, R. L. B., & Selinger, J. V. (2011) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1017658108 · Cited by 266
Pathway Selection in Peptide Amphiphile Assembly
Korevaar, P. A., Newcomb, C. J., Meijer, E. W., & Stupp, S. I. (2014) · Journal of the American Chemical Society · doi:10.1021/ja503882s · Cited by 265
Self-citationNewcomb, C. J., Moyer, T. J., Lee, S. S., & Stupp, S. I. (2012) · Current Opinion in Colloid & Interface Science · doi:10.1016/j.cocis.2012.09.004 · Cited by 76
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Metadata
- Authors
- Pashuck, E. T., & Stupp, S. I.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2010-06-16
- Volume
- 132
- Issue
- 26
- Pages
- 8819-8821
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2028611843
- Cited by
- 305
- References
- 0
- FWCI
- 9.64
- Type
- journal article
- Language
- en
- Open access
- green
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