New insights into exploring new functional enzymes through the enzyme promiscuity

Area of Science:

• Biochemistry
• Enzyme Engineering
• Synthetic Biology

Background:

• Enzyme promiscuity refers to enzymes catalyzing reactions beyond their native functions.
• This phenomenon is increasingly recognized as a key resource for enzyme engineering and biocatalysis.
• Understanding promiscuity is crucial for expanding enzyme capabilities.

Purpose of the Study:

• To provide a comprehensive review of enzyme promiscuity.
• To explore its implications for discovering and developing novel functional enzymes.
• To discuss strategies for harnessing and understanding enzyme promiscuity.

Main Methods:

• Review of literature on enzyme promiscuity and engineering strategies.
• Analysis of targeted approaches including (semi-)rational design, directed evolution, and de novo design.
• Examination of structural biology and computational modeling advancements.

Main Results:

• Enzyme promiscuity can be harnessed to broaden substrate scope, enhance catalytic efficiency, and adapt enzymes to new conditions.
• Modifications often involve subtle active site alterations, impacting catalytic mechanisms.
• Balancing native activity with enhanced promiscuous functions presents a significant challenge.

Conclusions:

• Advances in structural biology and computational modeling aid in overcoming engineering challenges.
• Further investigation into the mechanistic basis of promiscuous activity is essential.
• Leveraging promiscuous enzymes is vital for industrial applications and next-generation biocatalyst development.