Simple and Easy Transformation protocol
- Thaw the super competent cells on ice.
- Transfer 1-5 µl ligation reaction mixture to the competent cells and mix gently.
- Incubate the tube on ice for 20-30 minutes.
- Heat-shock the cells in a 42 °C water bath for 45 seconds.
- Incubate the tubes on ice for 1-2 minutes.
- Add 1ml pre-warmed SOC medium.
- Incubate at 37 °C for 30-60 minutes with or without shaking.
- Plate ~ 0.1ml of the transformation mixture on LB agar plate with appropriate antibiotic and with IPTG and X-gal applied on the surface of the plate if colour screen is desired.
For electroporation:
- Thaw the electro-competent cells on ice. Cool the cuvettes (0.1cm gap) on ice.
- Prepare sample DNA from ligation reaction by one of following methods. A). Precipitate DNA with ethanol and resuspend DNA in 10 µl dd-H 2O to a concentration of 20-100ng/ ml. Add1 ml of DNA to the competent cells, mix gently. Transfer cells/DNA to the cold cuvette. B). Dilute the ligation reaction 10 times with dd-H 2O. Transfer 1-5 µl of diluted DNA to the cells. C). Transfer 1 microliterµl of ligation mixture directly to the competent cells.
- Place the cuvette in the cuvette holder and electroporate (1250 v- 2000 v) the cells according to the manual of your instrument.
- Follow step 6 as chemical transformation
