Labeling of Nanofiber-Forming Peptides by Site-Directed Bioconjugation: Effect of Spacer Length on Self-Assembly.
Curr Org Synth 2020;
16:319-325. [PMID:
31975683 DOI:
10.2174/1570179416666181127150142]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 10/17/2018] [Accepted: 11/13/2018] [Indexed: 12/31/2022]
Abstract
BACKGROUND
The conjugation of small organic molecules to self-assembling peptides is a versatile tool to decorate nanostructures with original functionalities. Labeling with chromophores or fluorophores, for example, creates optically active fibers with potential interest in photonic devices.
AIM AND OBJECTIVE
In this work, we present a rapid and effective labeling procedure for a self-assembling peptide able to form nanofibers. Rapid periodate oxidation of the N-terminal serine residue of the peptide and subsequent conjugation with dansyl moiety generated fluorophore-decorated peptides.
RESULTS
Three dansyl-conjugated self-assembling peptides with variable spacer-length were synthesized and characterized and the role of the size of the linker between fluorophore and peptide in self-assembling was investigated. Our results show that a short linker can alter the self-assembly in nanofibers of the peptide.
CONCLUSIONS
Herein we report on an alternative strategy for creating functionalized nanofibrils, able to expand the toolkit of chemoselective bioconjugation strategies to be used in site-specific decoration of self-assembling peptides.
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