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In Vitro Directed Evolution of a Restriction Endonuclease with More Stringent Specificity
Published on: March 25, 2020
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Restriction enzyme-mediated DNA family shuffling
James B Y H Behrendorff1, Wayne A Johnston, Elizabeth M J Gillam
1Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Australia.
Methods in Molecular Biology (Clifton, N.J.)
|July 25, 2014
Summary
DNA shuffling accelerates protein evolution by recombining gene variants. This method, particularly restriction enzyme-mediated DNA family shuffling, enhances variant diversity and experimental efficiency.
Area of Science:
- Molecular Biology
- Biotechnology
- Protein Engineering
Background:
- DNA shuffling is a recombinatorial method for directed evolution.
- It accelerates protein evolution beyond error-prone PCR.
- Originally, mutated gene copies were fragmented and reassembled.
Purpose of the Study:
- To provide an overview of DNA shuffling variations.
- To present an improved protocol for restriction enzyme-mediated DNA family shuffling.
- To enhance the efficiency of generating diverse protein variants.
Main Methods:
- Overview of DNA shuffling techniques.
- Detailed protocol for restriction enzyme-mediated DNA family shuffling.
- Focus on DNA fragment purification for reassembly.
Main Results:
- Restriction enzyme-mediated fragmentation offers better control over fragment length compared to DNase I.
- This method reduces over-digestion and undigested fragments.
- Improved purification enhances the diversity of the resulting gene library.
Conclusions:
- DNA shuffling is a powerful tool for protein engineering.
- Restriction enzyme-mediated DNA family shuffling provides enhanced control and efficiency.
- The presented protocol offers improvements for generating diverse protein variants.
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