Week from August 17th, to August 23rd, 2009

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August, 17th

August, 18th

August, 19th

August, 20th

• We resuspended pSB3K3 from 2009 Registry Distribution. The plasmid with ccdB was not consistent, so we resuspended a consistent brick (of ~700bp length) contained in pSB3K3.

• We transformed the overnight ligations and pSB3K3 in TOP10 and plated transformed bacteria on LB agar plates + Amp (A14 and A16) or + Kan (pSB3K3, B7 and B8). We incubated the plates at 37°C overnight.

August, 21st

• Colony PCR for A14 (5 colonies) and A16 (5 colonies) plates. Colonies were inoculated in 1 ml of LB + Amp and let grow waiting for the end of the reaction.

• Electrophoresis for PCR results.

• Gel results:
  • A14 - 3rd colony seems the most pure and it had the expected length for ligated plasmid.
  • A16 - reaction worked only on A16-1, but it was negative.

• We decided to keep A14-3 (positive at PCR) and A16-4 (randomly chosen) for digestion screening: we prepared a glycerol stock for them and re-filled the remaining 250 ul of bacteria with 4 ml of LB + Amp.

• We incubated these cultures at 37°C, 220 rpm overnight.

• We picked 2 colonies from B7, 5 colonies from B8 and 1 colony from pSB3K3 plates. We inoculated them in 1 ml of LB + Kan and incubated them at 37°C, 220 rpm for 5 hours and 1/2. Then we prepared glycerol stocks and re-filled the remaining 250 ul with 4 ml of LB + Kan.

• NOTE: we decided not to perform PCR on B7 and B8 plates because of the large size of positive inserts.

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