Guidelines for development and implementation of biocatalytic P450 processes.

Area of Science:

• Biocatalysis
• Synthetic Chemistry
• Pharmaceutical Research

Background:

• Cytochrome P450 monooxygenases (P450s) are crucial in drug metabolism and exhibit high selectivity for chemical synthesis.
• Their ability to perform selective hydroxylation without protecting groups makes them valuable tools.
• Advancements in P450 discovery and engineering are driving their application in synthetic processes.

Purpose of the Study:

• To review strategies for improving cytochrome P450 whole-cell biocatalytic processes.
• To discuss biological and process engineering approaches for industrial implementation.
• To highlight challenges in achieving economically feasible P450 expression yields.

Main Methods:

• Review of current literature on P450 biocatalysis and whole-cell systems.
• Analysis of biological factors influencing P450 expression and activity.
• Examination of process engineering considerations for industrial scale-up.

Main Results:

• Whole-cell systems are motivated by P450 cofactor dependence, with current industrial processes favoring growing cells.
• Achieving sufficient biocatalyst yield (g/g cdw or g/L/h) in heterologous hosts remains a significant hurdle.
• A combined approach of host selection, cell engineering, and process engineering is proposed for effective implementation.

Conclusions:

• Improving P450 whole-cell processes requires integrated biological and engineering strategies.
• Host selection and cell engineering are critical for enhancing biocatalyst yield.
• Optimized P450 systems hold significant potential for industrial synthetic chemistry.