Team:Paris/August 17


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Construction of pLas-TetR-GFP tripart & rbs-LasR-dble ter

Analysis of the transformation we did yesterday

Number of colonies and flurorescence

Ligation name Description Antibio Number Colonies observed Fluorescence Comments
L150 D105(BV) - D146(BI)
pLas - rbs-TetR-GFP Tripart
Amp 3 No Problem
L151 D147(FI) - D125(FV)
rbs-LasR - Double terminator
Kan 21 No OK
C1 D105(BV) Amp 150 NO OK
C2 D125(FV) Kan 2 No OK
Positive Control pUC19 Amp 416 (efficiency 4.10^7) No OK

PCR Screening


L150 and L151
Well Sample Expected size Measured size
1 1kb ladder
2 Negative control (pUC19) nothing nothing
3 Positive control (MP101.1) 768 pb 800pb
4 L150.1 1992pb 400pb
5 L150.2
6 L150.3
7 L151.1 1229pb 1200pb
8 L151.2
9 L151.3
10 L151.4
11 L151.5
12 L151.6
13 L151.7
14 L151.8
15 100pb ladder
Conclusion : 
L150 doesn't success, measured size match with the promoter size only,
we will check the size of L101 by screening and if it doesn't match with the good size (1827pb)
we will try again the ligation : rbs-TetR (S03879) with GFP tripart (E0840).
L151 is ok we have to put a strong promoter before the part rbs-lasR-double terminator :GREAT !

Minipreps & Stocks

  • Cultured in 7,5ml of LB with a thoothpick of a colony.
  • Culture O/N at 37°C of :
Miniprep Name Ligation name Antibio Biobricks Description
MP161.1 L150.1 Amp Part icon regulatory.pngPart icon rbs.pngIcon coding.pngPart icon rbs.pngPart icon reporter.pngPart icon terminator.pngPart icon terminator.png pLas - rbs-TetR-GFP tripart
MP161.2 L150.2
MP161.3 L150.3
MP162.1 L151.1 Kan Part icon rbs.pngIcon coding.pngPart icon terminator.pngPart icon terminator.png rbs-LasR - Double terminator
MP162.2 L151.2
MP162.3 L151.3

Creation of a registry of pFliL, pFlhDC, and FlhDC

Analysis of the other transformation we did yesterday

Evaluation of the number of colonies

Ligation name Number of colonies Autoligation control
L 143 (Kan) 0 0
L 144 (Kan) 0 0
L 145 (Amp) 452 430
L 146 (Amp) ~ 2000 430
L 147 (Amp) ~3500 >5000
L143 and L144 did not work once again. Maybe there is a problem with the digestion,
because the primers used present only two nucleotides after the restriction sites. what we should
do is cutting pfliL with xbaI and SpeI. As the vector will autoligate, we should use a phosphatase
to prevent this phenomenon.
For L147 and its control (T4), we do not observe any red fluorescence. It means that the digestion work well,
because if it was not digested, the strong promoter J23100 should express mRFP!
We will repeat all the ligation anyway.

Construction of OmpR*+RBS and EnvZ*+RBS: transformation

Evaluation of the number of colonies

Ligation name Number of colonies Autoligation control
L 148 (Amp) ~10000 ~2000
L 149 (Amp) ~750 ~2000