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Protocol: E.coli Transformation
- Thaw the competent E.coli (DH5alpha) cells on ice (not in hands!)
- As soon as it is thawed, add 50ul of the cells to the DNA (~50-100ng of pure plasmid)
- Let it rest on ice for 20-30 min. Meanwhile, put agar plate (with correct antibiotic) at 37°C for prewarming.
- Put the tube with DNA+E.coli at 42°C for 45 sec-1 min (heat shock)
- Add 400ul of LB broth and place at 37°C for 20-30min (shaking)
- Spread the cells on the prewarmed plate (and let it dry)
- Incubate the plate upside-down at 37°C for ~14-15h (leaving it more than 16h decreases the plasmid quality)
