Enhanced Enzyme Activity through Scaffolding on Customizable Self-Assembling Protein Filaments.

Area of Science:

• Biotechnology
• Biomaterials Science
• Enzyme Engineering

Background:

• Nature utilizes organized enzyme complexes for efficient metabolic reactions.
• Scaffolding enzymes on artificial materials is a biomimetic strategy for enhanced biocatalysis.
• Artificial platforms are needed to mimic natural enzyme organization.

Purpose of the Study:

• To develop a versatile scaffolding platform for enzyme immobilization on nanofibers.
• To engineer gamma-prefoldin (γ-PFD) for specific enzyme binding.
• To demonstrate enhanced catalytic activity of immobilized enzymes.

Main Methods:

• Genetic engineering of gamma-prefoldin (γ-PFD) with peptide tags.
• In vitro mixing of engineered γ-PFD with enzymes.
• Immobilization of fluorescent proteins and model enzymes (glucose oxidase, horseradish peroxidase) on nanofibers.
• Verification of enzyme density and assessment of catalytic activity.

Main Results:

• Successful immobilization of proteins on γ-PFD nanofibers with tunable density.
• Demonstrated enhancement of catalytic activity for immobilized glucose oxidase and horseradish peroxidase.
• γ-PFD scaffolding created a favorable microenvironment for enzyme catalysis.

Conclusions:

• The engineered γ-PFD nanofibers provide a versatile platform for enzyme scaffolding.
• This biomimetic strategy enhances enzyme catalytic efficiency.
• The methodology is applicable for assembling multienzymatic complexes in biocatalysis.