Disruption of diphenylalanine assembly by a Boc-modified variant

Creasey, Rhiannon and Louzao, Iria and Arnon, Zohar and Marco, Pini and Adler-Abramovich, Lihi and Roberts, Clive J. and Gazit, Ehud and Tendler, Saul J.B. (2016) Disruption of diphenylalanine assembly by a Boc-modified variant. Soft Matter, 12 (47). pp. 9451-9457. ISSN 1744-6848

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Abstract

Peptide-based biomaterials are key to the future of diagnostics and therapy, promoting applications such as tissue scaffolds and drug delivery vehicles. To realise the full potential of the peptide systems, control and optimisation of material properties are essential. Here we invesigated the co-assembly of the minimal amyloid motif peptide, diphenylalanine (FF), and its tert-butoxycarbonyl (Boc)-modified derivative. Using Atomic Force Microscopy, we demonstrated that the co-assembled fibers are less rigid and show a curvier morphology. We propose that the Boc-modification of FF disrupts the hydrogen bond packing of adjacent N-termini, as supported by Fourier transform infrared and fluorescence spectroscopic data. Such rationally modified co-assemblies offer chemical functionality for after-assembly modification and controllable surface properties for tissue engineering scaffolds, along with tunable morphological vs. mechanical properties.

Item Type: Article
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Pharmacy
Identification Number: 10.1039/C6SM01770C
Depositing User: Roberts, Prof Clive J
Date Deposited: 18 May 2017 08:53
Last Modified: 08 Nov 2017 04:30
URI: http://eprints.nottingham.ac.uk/id/eprint/42919

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