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Updated: Jul 14, 2026
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Directed Evolution Method in Saccharomyces cerevisiae: Mutant Library Creation and Screening
Published on: April 1, 2016
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High Throughput Screening with SAMDI Mass Spectrometry for Directed Evolution
Adam J Pluchinsky, Daniel J Wackelin1, Xiongyi Huang1
1Division of Chemistry and Chemical Engineering MC 210-41, California Institute of Technology, Pasadena, California 91125, United States.
Journal of the American Chemical Society
|November 11, 2020
Summary
Researchers developed a high-throughput screening method for enzyme variants using mass spectrometry. This approach enables rapid evaluation of thousands of enzyme catalysts for improved chemical transformations, accelerating enzyme evolution.
Area of Science:
- Biocatalysis
- Enzyme Engineering
- Analytical Chemistry
Background:
- Directed evolution advances enzyme discovery but often uses low-throughput screening.
- Chromatography-based methods limit the scale and speed of enzyme variant evaluation.
Purpose of the Study:
- To present a high-throughput strategy for screening enzyme variants.
- To enable direct evaluation of thousands of enzyme variants for improved activity.
Main Methods:
- Immobilization of unpurified reaction products onto a self-assembled monolayer.
- Mass spectrometry analysis of immobilized products.
- Application to libraries of randomly mutated cytochrome P411 variants.
Main Results:
- Demonstrated a high-throughput strategy for screening enzyme variants.
- Successfully identified improved catalysts for C-H alkylation using cytochrome P411 variants.
- Achieved direct evaluation of thousands of variants in under an hour.
Conclusions:
- The developed method significantly increases throughput for enzyme screening.
- This technique can be adapted to evolve enzymatic activity for various chemical transformations.
- Accelerates the discovery of novel and improved biocatalysts.
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