Natively unfolded state for engineering nanoscale fibrillar arrays

Area of Science:

• Materials Science
• Nanotechnology
• Biomaterials Engineering

Background:

• High aspect ratio fibrillar nanoscale arrays are crucial for advanced materials.
• Understanding protein fibril structures, like beta-structured alpha-synuclein, offers design principles.
• Existing fabrication methods may lack versatility for complex nanoarray designs.

Purpose of the Study:

• To develop a generic fabrication strategy for high aspect ratio fibrillar nanoscale arrays.
• To emulate the intermittence effect found in alpha-synuclein fibrils using alpha-helical fibers.
• To demonstrate a method for converting these nanoarrays into nanoparticle arrays.

Main Methods:

• Fabrication of periodic nanosized segments with uniform unfolded regions.
• Targeting unfolded regions for conformational binding using metal nanoparticle-peptide conjugates.
• Utilizing refolding mechanisms to convert fibrillar arrays into nanoparticle arrays.

Main Results:

• Successful fabrication of high aspect ratio nanoarrays with periodic structures.
• Demonstration of the intermittence effect emulation in alpha-helical fibers.
• Conversion of fibrillar nanoarrays into nanoparticle arrays via targeted binding and refolding.

Conclusions:

• A novel and generic strategy for engineering fibrillar nanoscale arrays is presented.
• The approach allows for the transformation of nanoarrays into nanoparticle arrays.
• This opens new avenues for creating advanced nanoscale materials and devices.