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Updated: Jun 27, 2025

Directed Evolution Method in Saccharomyces cerevisiae: Mutant Library Creation and Screening

Directed Evolution Method in Saccharomyces cerevisiae: Mutant Library Creation and Screening

Published on: April 1, 2016

Synthesis cost-optimal targeted mutant protein libraries.

Dimitris Papamichail¹, Madeline Febinger¹, Shm Almeda¹

¹Department of Computer Science, The College of New Jersey, 2000 Pennington Road, Ewing, 08628, NJ, USA.

Computational Biology and Chemistry

|April 26, 2024

Summary

This summary is machine-generated.

This study introduces a new method using multiple degenerate codons to create targeted protein libraries, significantly increasing beneficial variants while minimizing unwanted ones.

Keywords:

Degenerate codon Oligo design Protein library Synthetic biology

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Last Updated: Jun 27, 2025

Directed Evolution Method in Saccharomyces cerevisiae: Mutant Library Creation and Screening

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Published on: April 1, 2016

Mutagenesis and Functional Selection Protocols for Directed Evolution of Proteins in E. coli

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Gene-targeted Random Mutagenesis to Select Heterochromatin-destabilizing Proteasome Mutants in Fission Yeast

Gene-targeted Random Mutagenesis to Select Heterochromatin-destabilizing Proteasome Mutants in Fission Yeast

Published on: May 15, 2018

Area of Science:

Biochemistry
Molecular Biology
Bioinformatics

Background:

Protein variant libraries are crucial for protein engineering, aiding in the discovery of improved protein activity and stability.
Current methods using site-directed mutagenesis and degenerate codons often introduce unwanted amino acids or STOP codons, reducing library efficiency.

Purpose of the Study:

To develop a novel computational approach for synthesizing targeted protein variant libraries with a higher yield of beneficial mutations.
To minimize the cost and complexity of producing diverse protein libraries by avoiding unwanted variants.

Main Methods:

Developed an algorithm to determine the minimum number of degenerate codons required for specific amino acid sets.
Implemented a dynamic programming method to optimally partition DNA sequences into overlapping oligonucleotides for synthesis.
Utilized annealing-based recombination of oligonucleotides during synthesis to create targeted libraries.

Main Results:

Achieved orders of magnitude increase in beneficial variant yields within produced mutant libraries.
Demonstrated that this method is particularly effective for large combinatorial libraries.
Showcased a modest increase in DNA synthesis costs leading to significantly improved library outcomes.

Conclusions:

The developed computational strategy enables the efficient production of targeted protein libraries.
This approach enhances the discovery of proteins with improved properties by maximizing beneficial variant representation.
Optimized oligonucleotide synthesis strategies can overcome limitations of traditional mutagenesis techniques.