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Transformation

Transformation

Microbial communities are dynamic environments where cell lysis releases free DNA into the surroundings. Other cells can take up this extracellular DNA through a process known as transformation.When a cell incorporates this foreign DNA into its genome, resulting in genetic modification, the process is known as transformation. Cells capable of this process are termed competent. Competence can be natural, as observed in certain bacteria and archaea, or artificially induced in the...

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Related Experiment Video

Updated: Sep 6, 2025

High-throughput Yeast Plasmid Overexpression Screen

High-throughput Yeast Plasmid Overexpression Screen

Published on: July 27, 2011

High-Efficiency Plasmid DNA Transformation in Yeast.

O'Taveon R Fitzgerald¹, Nestor D Rodriguez¹, L Kevin Lewis²

¹Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX, USA.

Methods in Molecular Biology (Clifton, N.J.)

|July 5, 2022

Summary

This study introduces optimized chemical methods for efficient DNA transformation in Saccharomyces cerevisiae and other industrial yeasts. New protocols enhance high-throughput yeast genetic engineering by improving DNA delivery into cells.

Keywords:

Chemical transformation Early stationary phase Gene knockout Gene replacement Plasmids

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Area of Science:

Biotechnology
Molecular Biology
Microbiology

Background:

Chemical transformation is the primary method for introducing DNA into industrial yeasts like Saccharomyces cerevisiae.
Existing protocols often use lithium ions, polyethylene glycol (PEG), and dimethyl sulfoxide (DMSO) to facilitate DNA uptake.
Recent advancements show high transformation efficiencies are achievable with early stationary phase yeast cells.

Purpose of the Study:

To describe optimized chemical reagents and cell growth conditions for efficient yeast DNA transformation.
To enable high-throughput genetic engineering of industrial yeast strains.

Main Methods:

Utilizing specific carrier DNAs, chemical reagents, and optimized cell growth media.
Applying these methods to transform yeast cells with plasmids or linear DNA fragments.

Main Results:

Achieved high transformation efficiencies in yeast cells.
Demonstrated successful transformation with both plasmids and linear DNA fragments.
Developed rapid and scalable methods suitable for high-throughput applications.

Conclusions:

The described methods provide a robust and efficient approach for yeast DNA transformation.
These advancements facilitate genetic manipulation and strain development in industrially relevant yeasts.
Optimized protocols support scalable, high-throughput yeast engineering projects.