Detection of large plasmids from the Bacillus cereus group
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Updated: Jul 8, 2026

Detection of Horizontal Gene Transfer Mediated by Natural Conjugative Plasmids in E. coli
Published on: March 24, 2023
Lars Andrup1, Kenneth Klingenberg Barfod, Gert B Jensen
1National Research Centre for the Working Environment, Lersø Parkalle 105, DK-2100 Copenhagen, Denmark. LAN@arbejdsmiljoforskning.dk
Abstract:
The members of the Bacillus cereus group, Bacillus anthracis, Bacillus thuringiensis, and B. cereus senso stricto, are largely defined by their content of large plasmids, which encode major virulence factors. Here we offer an easy, fast, and reliable protocol for the isolation and detection of large plasmids up to the size of at least 350kb. Furthermore, using this method, we report that Bacillus mycoides contain large plasmids.

