Natively Unfolded State for Engineering Nanoscale Fibrillar Arrays

Abstract

A generic rationale for the fabrication of high aspect ratio fibrillar nanoscale arrays is described. The design emulates an intermittence effect observed for β-structured α-synunclein fibrils, reported herein, in a structurally unrelated α-helical fiber. The generated nanoarrays are composed of periodic nanosized segments separated at uniform distances of unfolded regions. These regions can be targeted for conformational binding and refolding with metal nanoparticle-peptide conjugates for the conversion of fibrillar arrays into nanoparticle arrays. The introduced concept opens new strategies for engineering novel nanoscale materials and devices.

Impact of multivalent charge presentation on peptide–nanoparticle aggregation

“…7 the nanoparticles are almost exclusively organized at the surface of the peptide fiber bundles. A similar effect was reported by Cherny and coworkers [41]. Since the nanoparticle concentration was 0.05 µM, an excess of peptide was present in solution.…”

Peptide‐Directed Self‐Assembly of Functionalized Polymeric Nanoparticles Part I: Design and Self‐Assembly of Peptide–Copolymer Conjugates into Nanoparticle Fibers and 3D Scaffolds

“…The polymeric micro‐ or nanoparticles, that may or may not contain drugs, are functionalized with oppositely charged β‐sheet peptides to direct particle assembly. Peptide directed assembly of nanoparticles has received some attention, but so far it has been limited to inorganic nanoparticle arrays using self‐assembled peptide structures as templates . For example, Nikhil et al reported a well‐organized one‐dimensional gold nanoparticle line formed on self‐assembled polypeptide template, and the formation of the nanoparticle array was directed by regulatory‐presented positive charges on peptide fiber surface .…”

“…Peptide directed assembly of nanoparticles has received some attention, but so far it has been limited to inorganic nanoparticle arrays using self-assembled peptide structures as templates. [23][24][25] For example, Nikhil et al reported a well-organized one-dimensional gold nanoparticle line formed on self-assembled polypeptide template, and the formation of the nanoparticle array was directed by regulatory-presented positive charges on peptide fiber surface. [24] Another recent report showed a simple method to fabricate a two-dimensional gold nanoparticle line pattern on mica surface from a designer b-sheet peptide (LELC16)-functionalized gold nanoparticles.…”

Studies of Functionalized Nanoparticles for Smart Self-Assembly and as Controlled Drug Delivery

“…Using peptide directed assembly of nanoparticles has received limited attention, and prior to this work was limited to inorganic nanoparticles (i.e. gold nanoparticles, nanotubes) arraysusing self-assembled peptide structures as templates or as assembly ligands (55)(56)(57)(58). For example, Nikhil et al (56) reported a well-organized one-dimensional gold nanoparticle line formed on a self-assembled polypeptide template, and the formation of the nanoparticle array was directed by positive charges on peptide fiber surface.…”