fchem-08-00217 (1).pdf (1.44 MB)
Transition of nano-architectures through self-assembly of lipidated ß3-tripeptide foldamers
journal contribution
posted on 2023-06-10, 00:59 authored by Nathan Habila, Ketav Kulkarni, Tzong-Hsien Lee, Zahraa S Al-Garawi, Louise SerpellLouise Serpell, Marie-Isabel Aguilar, Mark P Del Borgoß3-peptides consisting exclusively of ß3-amino acids adopt a variety of non-natural helical structures and can self-assemble into well-defined hierarchical structures by axial head-to-tail self-assembly resulting in fibrous materials of varying sizes and shapes. To allow control of fiber morphology, a lipid moiety was introduced within a tri-ß3-peptide sequence at each of the three amino acid positions and the N-terminus to gain finer control over the lateral assembly of fibers. Depending on the position of the lipid, the self-assembled structures formed either twisted ribbon-like fibers or distinctive multilaminar nanobelts. The nanobelt structures were comprised of multiple layers of peptide fibrils as revealed by puncturing the surface of the nanobelts with an AFM probe. This stacking phenomenon was completely inhibited through changes in pH, indicating that the layer stacking was mediated by electrostatic interactions. Thus, the present study is the first to show controlled self-assembly of these fibrous structures, which is governed by the location of the acyl chain in combination with the 3-point H-bonding motif. Overall, the results demonstrate that the nanostructures formed by the ß3-tripeptide foldamers can be tuned via sequential lipidation of N-acetyl ß3-tripeptides which control the lateral interactions between peptide fibrils and provide defined structures with a greater homogeneous population.
History
Publication status
- Published
File Version
- Published version
Journal
Frontiers in ChemistryISSN
2296-2646Publisher
FrontiersExternal DOI
Volume
8Page range
217Event location
SwitzerlandDepartment affiliated with
- Neuroscience Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2021-09-17First Open Access (FOA) Date
2021-09-17First Compliant Deposit (FCD) Date
2021-09-17Usage metrics
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