A Screening Method for P450 BM3 Mutant Libraries Using Multiplexed Capillary Electrophoresis for Detection of...

Area of Science:

• Analytical Chemistry
• Biochemistry
• Molecular Biology

Background:

• Capillary electrophoresis (CE) separates charged species using an electric field in microfluidic channels.
• Multiplexed CE systems, particularly 96-well formats (96-MP-CE), enable high-throughput screening of various biological and chemical samples.
• Directed evolution campaigns generate enzyme mutant libraries to improve catalytic properties.

Purpose of the Study:

• To introduce and demonstrate the utility of a 96-multiplexed capillary electrophoresis (96-MP-CE) system.
• To apply 96-MP-CE for product-specific high-throughput screening of enzyme mutant libraries.
• To utilize 96-MP-CE in directed evolution studies of P450 BM3.

Main Methods:

• Utilized a 96-multiplexed capillary electrophoresis (96-MP-CE) instrument.
• Applied high voltage electric fields for separation of charged species in microfluidic channels.
• Screened mutant libraries of P450 BM3 in directed evolution campaigns.

Main Results:

• The 96-MP-CE system enabled comprehensive screening of enzyme mutant libraries.
• Detected all products formed by enzyme activity, providing a detailed view of enzyme function.
• Successfully applied 96-MP-CE in directed evolution of P450 BM3 for specific substrates.

Conclusions:

• 96-MP-CE is a powerful platform for high-throughput, product-specific screening of enzyme mutant libraries.
• This technology accelerates directed evolution by providing comprehensive enzyme activity data.
• The application of 96-MP-CE facilitates the study of enzyme engineering and optimization.