Engineering non-heme mono- and dioxygenases for biocatalysis

Area of Science:

• Biochemistry and Biotechnology
• Enzyme Engineering
• Biocatalysis

Background:

• Oxygenases are crucial enzymes introducing oxygen atoms into compounds, requiring cofactors like NADH or NADPH.
• Whole-cell catalysis is common for industrial oxygenase use, avoiding complex cofactor regeneration.
• Applications span bioremediation, chiral synthesis, pharmaceuticals, and materials science.

Purpose of the Study:

• To review protein engineering strategies for non-heme oxygenases.
• To explore methods for improving oxygenase functionality and creating novel biocatalysts.
• To highlight efficient approaches for tuning enzyme activity and selectivity.

Main Methods:

• Focus on protein engineering of non-heme monooxygenases and dioxygenases.
• Utilized rational mutagenesis guided by structural and sequence data.
• Employed random methods, including directed evolution.
• Developed targeted libraries for efficient screening.

Main Results:

• Protein engineering enables the modification of oxygenase activity and selectivity.
• Rational and random approaches can generate enzymes with improved or novel functions.
• Knowledge-based engineering with targeted libraries is effective for biocatalyst optimization.

Conclusions:

• Protein engineering is key to advancing oxygenase applications.
• Combining knowledge-based design with targeted libraries optimizes biocatalyst development.
• This strategy enhances catalytic activity and substrate scope while reducing screening efforts.