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Updated: Jan 24, 2026
09:55
In vitro Cell Migration and Invasion Assays
Published on: June 1, 2014
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In Vitro Assays for DNA Branch Migration.
Andrew A Kelso1,2, Steven D Goodson1,2, Michael G Sehorn3,4,5,6
1Department of Genetics and Biochemistry, Clemson University, Clemson, SC, USA.
Methods in Molecular Biology (Clifton, N.J.)
|May 26, 2019
Summary
This study details two assays for measuring enzyme branch migration activity, crucial for understanding DNA repair during homologous recombination. These methods help elucidate the roles of recombinases in DNA double-strand break repair.
Area of Science:
- Molecular Biology
- Genetics
- Biochemistry
Background:
- Homologous recombination is a vital DNA repair process for double-strand breaks.
- Recombinases are key enzymes mediating strand invasion in homologous recombination.
- Branch migration is essential for processing DNA joint molecules formed during repair.
Purpose of the Study:
- To describe two assays for evaluating enzyme branch migration activity.
- To determine the directionality of enzyme-mediated branch migration.
- To provide insights into the function of enzymes in homologous recombination.
Main Methods:
- Development of two distinct assays to monitor DNA branch migration.
- Quantification of enzyme activity and directionality in vitro.
- Analysis of enzyme-mediated movement of DNA joint molecules.
Main Results:
- The described assays successfully measure branch migration activity.
- Enzyme directionality in branch migration can be accurately determined.
- Data obtained provides functional insights into recombinase activity.
Conclusions:
- The developed assays are valuable tools for studying homologous recombination.
- Understanding branch migration is critical for elucidating DNA repair mechanisms.
- These methods facilitate the characterization of enzymes involved in DNA repair.
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