Exploiting cyclodextrins as artificial chaperones to enhance enzyme protection through supramolecular engineering

Area of Science:

• Biocatalysis and Enzyme Engineering
• Materials Science
• Computational Biology

Background:

• Enzyme stability is crucial for industrial applications but often limited by thermal and chemical denaturation.
• Artificial protein chaperones offer a potential strategy to protect and stabilize enzymes.
• Organosilica materials provide a versatile platform for immobilizing biomolecules.

Purpose of the Study:

• To develop and evaluate a novel enzyme stabilization method using beta-cyclodextrin (β-CD) embedded in an organosilica layer.
• To investigate the interaction between the artificial chaperone system and enzyme surfaces in silico.
• To assess the impact of this stabilization technique on enzyme performance under stress conditions.

Main Methods:

• Covalent embedding of β-cyclodextrin (β-CD) into an ultrathin organosilica layer.
• In silico simulation using protein energy landscape exploration to study enzyme-chaperone interactions.
• Experimental evaluation of enzyme stability under thermal and chemical stress, and surfactant-induced denaturation.

Main Results:

• The β-CD-embedded organosilica layer significantly enhanced enzyme stability against thermal and chemical challenges.
• The optimal temperature range for the enzyme biocatalyst was broadened.
• The β-CD within the protective layer facilitated enzyme refolding after surfactant treatment.

Conclusions:

• This artificial protein chaperone system effectively stabilizes enzymes by shielding them within an organosilica matrix.
• The method offers a promising approach for improving enzyme robustness and expanding their utility in various applications.
• Computational modeling aids in understanding the interaction mechanisms for rational design of enzyme stabilization strategies.