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Overexpression of multisubunit replication factors in yeast
1Department of Biochemistry and Molecular Biophysics, Washington University School of Medicine, 660 South Euclid Avenue, St. Louis, Missouri 63110, USA.
Methods (San Diego, Calif.)
|August 24, 1999
Summary
This study demonstrates how to use Saccharomyces cerevisiae (yeast) for efficiently overproducing complex replication factors. This method provides a cost-effective and abundant source of these essential cellular proteins.
Area of Science:
- Molecular Biology
- Biochemistry
- Yeast Genetics
Background:
- Saccharomyces cerevisiae is a widely used model organism due to its ease of genetic manipulation, rapid growth, and low-cost media.
- Complex multipolypeptide replication factors are crucial for DNA replication but are often difficult to obtain in large quantities.
Purpose of the Study:
- To describe a method for overproducing complex multipolypeptide replication factors using yeast expression systems.
- To establish an accessible and inexpensive large-scale source of these factors.
- To illustrate the methodology using the five-subunit replication factor C.
Main Methods:
- Utilizing yeast expression systems for regulated overexpression of target replication factors.
- Preparing whole-cell extracts by blending yeast cells with glass beads or frozen yeast with dry ice.
- Optimizing procedures to maximize protein yield and minimize proteolytic degradation.
Main Results:
- Demonstrated successful overproduction of complex replication factors in Saccharomyces cerevisiae.
- Developed a method yielding large quantities of these factors.
- Illustrated the protocol with the five-subunit replication factor C.
Conclusions:
- Yeast expression systems offer a versatile and cost-effective platform for the large-scale production of complex replication factors.
- The described methodology ensures high yields and minimizes degradation, providing a valuable resource for biochemical and genetic studies.