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Published on: January 8, 2015
A novel selection marker for efficient DNA cloning and recombineering in E. coli
Chuan-Wei Jang1, Terry Magnuson
1Department of Genetics, University of North Carolina, Chapel Hill, NC, USA.
Plos One
|February 26, 2013
Summary
A new selection marker, mutant fabI (mfabI), enhances plasmid propagation in E. coli. This novel marker expands options for molecular biology and improves the generation of gene targeting vectors.
Area of Science:
- Molecular Biology
- Bacterial Genetics
- Recombinant DNA Technology
Background:
- Plasmid maintenance in E. coli typically relies on antibiotic resistance markers.
- The limited availability of common antibiotic resistance markers restricts molecular manipulation and plasmid propagation.
- Novel selection strategies are needed to overcome these limitations.
Purpose of the Study:
- To introduce and evaluate a novel selection marker, mutant fabI (mfabI), for plasmid propagation in E. coli.
- To assess the efficiency of mfabI as a selection marker and its potential for handling unstable DNA sequences.
- To demonstrate the utility of mfabI in recombineering for generating mouse gene targeting vectors.
Main Methods:
- Development and implementation of the mfabI gene as a selection marker in E. coli.
- Plasmid propagation assays to evaluate mfabI efficiency.
- Incorporation of mfabI into recombineering vectors for generating mouse gene targeting constructs.
Main Results:
- mfabI functions as an effective selection marker for plasmid propagation in E. coli.
- mfabI exhibits unique properties that may aid in the molecular manipulation of unstable DNA sequences.
- mfabI-containing recombineering vectors offer advantages for generating mouse gene targeting vectors.
Conclusions:
- The novel mutant fabI (mfabI) marker expands the available selection tools for E. coli plasmid propagation.
- mfabI facilitates efficient molecular manipulation and plasmid propagation, particularly for unstable sequences.
- The integration of mfabI into recombineering workflows enhances the generation of gene targeting vectors.
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