Novel plasmid marker rescue transformation system for molecular cloning in Bacillus subtilis enabling direct selection of recombinants
✍ Scribed by Haima, Peter ;Bron, Sierd ;Venema, Gerard
- Publisher
- Springer
- Year
- 1990
- Tongue
- English
- Weight
- 808 KB
- Volume
- 223
- Category
- Article
- ISSN
- 0026-8925
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✦ Synopsis
A versatile plasmid marker rescue transformation system was developed for homology-facilitated cloning in Bacillus subtilis. It is based on the highly efficient host-vector system 6GM15-pHPS9, which allows the direct selection of recombinants by means of beta-galactosidase alpha-complementation. The system offers several advantages over previously described cloning systems: (1) the convenient direct selection of recombinants; (2) the ability to effectively transform B. subtilis competent cells with plasmid monomers, which allows the forced cloning of DNA fragments with high efficiency; (3) the availability of 6 unique target sites, which can be used for direct clone selection, SphI, NdeI, NheI, BamHI, SmaI and EcoRI; and (4) the rapid segregational loss of the helper plasmid from the transformed cells.