Team:Paris Saclay/Notebook/August/30

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Contents

Notebook : August 30

Lab work

A - Aerobic/Anaerobic regulation system

Objective : characterize BBa_K1155000, BBa_K1155004, BBa_K1155005, BBa_K1155006

1 - Results of liquid culture of Pndh*-RBS-Amil CP-Term in pSB1C3 in aerobic and anaerobic conditions

XiaoJing

IT WORKS !!!

PsPfnr3008.jpg

In anaerobic condition, FNR protein (active form) binds to the constitutive promoter Pndh* and repressed amilCP expression. Therefore, the bacteria have no colour.

In aerobic condition, FNR protein is inactive and can not bind to constitutive promoter Pndh*, amilCP is expressed and we can see the bacteria have violet colour.

2 - Results of culture of Pfnr with RBS-AmilCP-Term in pSB1C3, PnirB with RBS-LacZ-Term in pSB1C3 in aerobic and anaerobic conditions

XiaoJing

Purification of 08/29/13 didn't work. We have blue colonies for Pndh* with RBS-AmilCP-Term in pSB1C3 in aerobic and anaerobic conditions. We also have blue colonies for PnirB with RBS-LacZ-Term in pSB1C3 in anaerobic conditions.

PsPfnrcult3008.jpg PsNirBcult3008.jpg

3 - Ligation of Pndh* with RBS-LacZ-Term in pSB1C3

XiaoJing

Used quantities :

  • Pndh* : 8µL
  • RBS-LacZ-Term in pSB1C3 : 3µL
  • Buffer ligation : 2µL
  • Ligase : 1µL
  • H2O : 6µL

4 - Transformation of ligation of Pndh* with RBS-LacZ-Term in pSB1C3 in DH5α strain

XiaoJing

Protocol : Bacterial transformation

We incubate the bacteria in LB-chloramphenicol-Xgal plate at 37°C in aerobic conditions.

5 - Ligation of Pfnr with RBS-LacZ-Term in pSB3K3 and PnarK with RBS-LacZ-Term in pSB3K3

XiaoJing

Used quantities :

  • Pndh*, PnarK : 3µL
  • RBS-LacZ-Term : 3µL
  • pSB3K3 : 5µL
  • Buffer ligase : 2µL
  • Ligase : 1µL
  • H2O : 6µL

6 - Transformation of ligation of Pndh* with RBS-LacZ-Term in pSB3K3 and PnarK with RBS-LacZ-Term in pSB3K3 in DH5α strain

XiaoJing

Protocol : Bacterial transformation

We incubate the bacteria at 37°C with LB-Kanamycine-Xgal in anaerobic conditions for PnarK with RBS-LacZ-Term in pSB3K3.

We incubate the bacteria at 37°C with LB-Kanamycine-Xgal in aerobic conditions for Pndh* with RBS-LacZ-Term in pSB3K3.

7 - Electrophoresis of PCR Colony of Pndh* with RBS_AmilCP-Term in DH5α strain

XiaoJing

[[]]
  • Well 1 : 6µL DNA Ladder
  • Well 2 : 20µL of Pndh* with RBS_AmilCP-Term clone 1 + 4µL of 6X loading dye
  • Well 3 : 20µL of Pndh* with RBS_AmilCP-Term clone 2 + 4µL of 6X loading dye
  • Well 4 : 20µL of Pndh* with RBS_AmilCP-Term clone 3 + 4µL of 6X loading dye
  • Well 5 : 20µL of Pndh* with RBS_AmilCP-Term clone 4 + 4µL of 6X loading dye
  • Gel : 1.0%

Expected sizes :

  • Pndh* with RBS_AmilCP-Term : 1000bp

We obtain fragments at the right size.

8 - Result of the purification colony og MG1655Z1 Δfnr

XiaoJing

A - Aerobic/Anaerobic regulation system / B - PCB sensor system

Objective : obtaining FNR and BphR2 proteins

1 - Electrophoresis of PCR Colony of FNR, RBS-FNR and RBS-BphR2

]]
  • Well 1 : 6µL DNA Ladder
  • Well 2 to 17 : 5µL of FNR + 1µl of 6X loading dye
  • Well 18 to 26 : 5µL of RBS-BphR2 + 1µl of 6X loading dye
  • Well 27 : 6µL DNA Ladder
  • Well 28 to 41 : 5µL of RBS-FNR + 1µl of 6X loading dye
  • Well 42 to 49 : 5µL of RBS-BphR2 + 1µl of 6X loading dye
  • WEll 50 : 6µL DNA Ladder
  • Gel : 1%

Expect sizes :

  • FNR : 1096 bp
  • RBS-FNR : 1014 bp
  • RBS-BphR2 : 1469 bp

We obtain fragment at right size for FNR and RBS-FNR. The Gisbon assembly of 08/26/13 was good.


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