...Agar Plates Bacterial Transformation Recovering Plasmid DNA from Bacterial Culture Introduction If you ...or stab culture of bacteria and need to purify plasmid DNA from it, you will want to isolate an individual...will minimize the chance of having a mixture of plasmids in your purified DNA. This protocol explains how...antibiotic. Label the bottom of the plate with the plasmid name and the date. It is also a good idea to add...overnight (12-18 hours) at 37 °C. Pro-Tip Some plasmids or bacteria need to be grown at 30 °C instead ... 37 °C. This is often true for large unstable plasmids, which sometimes recombine at 37 °C. Be sure to...single colonies, you can proceed to Recovering Plasmid DNA or use the individual colonies for other experiments...