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Determination of plasmid copy number by the "boiling" method
1Institute of Molecular Biology, Bulgarian Academy of Sciences, Sofia.
Analytical Biochemistry
|August 15, 1987
Summary
This study presents a rapid and dependable method for quantifying plasmid copy number in Escherichia coli. The technique utilizes DNA labeling and radioactivity measurement, eliminating the need for DNA isolation.
Area of Science:
- Molecular Biology
- Microbiology
- Biotechnology
Background:
- Accurate determination of plasmid copy number is crucial for genetic engineering and understanding bacterial physiology.
- Existing methods for plasmid copy number determination can be time-consuming and labor-intensive.
Purpose of the Study:
- To develop a fast and reliable method for quantifying plasmid copy number in Escherichia coli.
- To simplify the process of plasmid DNA analysis.
Main Methods:
- The study employed a "boiling" method for DNA separation.
- In vivo uniform labeling of total bacterial DNA was performed.
- Separation into plasmid and chromosomal DNA fractions followed by radioactivity measurement was used for quantitation.
Main Results:
- The proposed method provides a fast and reliable determination of plasmid copy number.
- The technique avoids the necessity of native DNA isolation and purification.
Conclusions:
- This novel approach offers an efficient way to measure plasmid copy number in Escherichia coli.
- The method is suitable for applications requiring rapid DNA analysis without complex purification steps.