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Team:GeorgiaTech/Chemically Competent Transformation
From 2013.igem.org
Contents |
Materials
- Chemically Competent Cells -20 µL
- PCR machine
- 10% BME ( beta mercaptoethanol ) - 0.88 µL
- SOC media - 222 µL
- Pipette tips with cut ends ( To decrease the amount of cells destroyed during the transferring and resuspending procedure)
- Plates with appropriate antibiotic (if stored in fridge, place in incubator before doing the transformation so that the plates are warm when it's time to plate)
Procedure
- Transfer 20 µL chemically competent cells from -80°C freezer to a PCR tube using a cut pipette tip
- Thaw competent cells over ice --> They should NOT be taken from above 4°C freezers)
- Thaw 10% BME - 0.88 µL (Must be completely thawed)
- Add 10% BME to the PCR tube with the competent cells
- Incubate on ice for 10 min
- Add 2 µL of purified plasmid
- Incubate the PCR tube in the PCR machine with HEATSHOK program:
Heat Shock protocol for PCR machine
- 4°C for 10 min
- 42°C for 30 sec
- Hold at 4°C until we add 222 µL of SOC
- 37°C for 1hr
- Holds at 4°C until we are ready for the next step.
Estimated Time: 1 hr 11 mins
- Be sure to sterilize the bottle with EtOH, and not contaminate the media when loading it into the heat cycler
- Plate 20 µL and 200 µL from each tube using the spreaders on LB/agar plates with the appropriate antibiotic
- Leave plates at 37°C overnight.
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