Plasmids 101: Positive and Negative Selection for Plasmid Cloning
Type
Blog Post
Published
Aug. 22, 2019, 12:43 p.m.
... cells that contain a specific gene survive. The rest do not grow. While there are many ways to design...You’ve worked hard to purify your gene of interest, get it into your plasmid backbone, and zap the mixture...some now have plasmids that contain your gene of interest, but others will uptake plasmid backbones that...antibiotic resistance cassette along with your gene of interest. In these cases, antibiotic selection will select... if the plasmid backbone contains your gene of interest.
Auxotrophy
Besides antibiotic selection, you ... select for a successful uptake of your DNA of interest by taking advantage of bacterial characteristics...by recombination sites. To introduce a gene of interest into the destination plasmid, recombination sites...