Notebook:Federico Castro M/2008/01/08
- Status: Pending for approval
- Issues: None
I want to recover 4 biobricks in order to see their behavior. The biobricks are oscillators dependent on quorum sensing signals such as the one I wanted to assemble. These devises were designed during the IAP 2003 and it will be interesting to see whether or not they can coordinate a population in a syncronized way. I await for approval for this procedure.
Biobricks to be extracted
- BBa_I4203 available at well 13K at iGEM 2007 Parts Kit Plate 1 in plasmid pSB1AK3
- BBa_I4202 available at well 13I at iGEM 2007 Parts Kit Plate 1 in plasmid pSB1AK3
- BBa_I4201available at well 13G at iGEM 2007 Parts Kit Plate 1 in plasmid pSB1AK3
- BBa_I4200available at well 13E at iGEM 2007 Parts Kit Plate 1 in plasmid pSB1AK3
The following protocol is proposed for biobrick recovery from the iGEM page 
- Puncture a hole through the foil with a pipette tip into the well that corresponds to the Biobrick™-standard part that you want
- Add 15 uL of diH2O (deionized water)
- Take 1uL DNA and transform into your desired competent cells, plate out on a plate with the correct antibiotic* and grow overnight. Your goal here is to obtain single colonies.
I intend to use the following protocol for transforming the biobricks into competent cells.
- Thaw 25 - 200 μl TB buffer cells on ice. Do not use glass tubes, which adsorb DNA.
- Add DNA, pipette gently to mix (keep volume of DNA less than 5% of the cell volume)
- Incubate on ice for 30 minutes
- Note: If you are in a rush, you can shorten this incubation time to 5-10 min.
- Incubate cells for 30 seconds at 42°C.
- Incubate cells on ice for 2 min.
- Add 4 volumes of room temperature SOC (not critical)
- Incubate for 1 hour at 37°C on shaker.
- Note: Can also save some time here by reducing incubation to ~45 min.
- Note: Step can be eliminated if plating on Amp plates, but not most other antibiotics
- Spread 100-300 μl onto a plate made with appropriate antibiotic.
- Grow overnight at 37°C.
Before the procedure I would need to prepare solid plates with Kanamicyn (all of them have resistance to Kanamycin). It seems that the proper concentration of Kanamicyn is 50 μg/mL.