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A modified method for plasmid extraction from Lactobacillus plantarum contained lysozyme removal step
Analytical Biochemistry
|November 9, 2018
Summary
Improving plasmid DNA extraction from Lactobacillus plantarum is crucial. A modified protocol emphasizing lysozyme removal significantly enhances plasmid yield compared to commercial kits.
Area of Science:
- Microbiology
- Molecular Biology
- Biotechnology
Background:
- Existing plasmid extraction methods are inefficient for Lactobacillus plantarum PC518.
- Efficient plasmid DNA isolation is essential for genetic studies and manipulation of lactic acid bacteria.
Purpose of the Study:
- To optimize plasmid extraction protocols for Lactobacillus plantarum.
- To investigate the impact of lysozyme treatment and removal on plasmid yield.
Main Methods:
- Evaluated 7 different plasmid extraction protocols.
- Compared a modified protocol with a commercial kit.
- Tested the protocols on Lactobacillus plantarum strains (PC518, 410, 9L15, JS193) and Weissella cibaria M2.
Main Results:
- The lysozyme removal step was identified as critical for improving extraction efficiency.
- The modified method increased plasmid DNA concentrations by 10.6, 9.5, 6, 5.6, and 1.5 times for the tested strains compared to the commercial kit.
- Demonstrated significant improvements in plasmid yield across multiple bacterial strains.
Conclusions:
- A modified plasmid extraction protocol significantly enhances DNA yield in Lactobacillus and Weissella species.
- Optimizing the lysozyme removal step is key to overcoming extraction challenges in these bacteria.
- The developed method offers a more effective alternative to commercial kits for isolating plasmid DNA from specific bacterial genera.
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