Sono-enzymatic peptide synthesis in organic solvent

Area of Science:

• Biocatalysis and Enzyme Engineering
• Polymer Chemistry
• Organic Synthesis

Background:

• Enzyme immobilization is crucial for biocatalyst stability and reusability in organic synthesis.
• Polyethylene glycol (P.E.G.) modification can enhance enzyme solubility and activity in non-aqueous media.
• Alpha-chymotrypsin is a well-established serine protease used in peptide bond formation.

Purpose of the Study:

• To synthesize and characterize novel copolymerized biocatalysts.
• To evaluate the efficiency of these biocatalysts for peptide synthesis in organic solvents.
• To investigate the effect of sonication on reaction kinetics and enzyme activity.

Main Methods:

• Copolymerization of acrylated alpha-chymotrypsin with polyethylene glycol (P.E.G.).
• Peptide synthesis in organic solvents with low water content.
• Application of sonication to accelerate coupling reactions.
• Enzyme activity assays to assess biocatalyst performance.

Main Results:

• Successful preparation of copolymerized biocatalysts with retained enzyme activity.
• Demonstrated feasibility of peptide synthesis using these biocatalysts in organic media.
• Significant increase in reaction velocity observed upon sonication, without loss of enzyme function.

Conclusions:

• Copolymerized acrylated alpha-chymotrypsin and P.E.G. serve as effective biocatalysts for peptide synthesis.
• Sonication is a valuable technique for enhancing the speed of enzymatic peptide coupling reactions.
• These findings open avenues for developing more efficient enzymatic peptide synthesis processes.