IGEM:Harvard/2009/Notebook/Harvard iGEM 2010/2010/07/14: Difference between revisions

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THE END  
THE END  
==Team Allergy==
*Genomic DNA extraction
*Grew up cultures of transformations from yesterday--tubes weren't cloudy so we grew overnight cultures again


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Revision as of 06:21, 15 July 2010

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Team Flavor

Miniprep of STOP + V0120 part

   Nanodrop O/D's:
   STOP V0120 1-1: 134.4 ng/μL
   STOP V0120 1-2: 98.7 ng/μL
   STOP V0120 2-1: 55.2 ng/μL
   STOP V0120 2-2: 121.8 ng/μL

DTL of StrepII+Mira/Brazz with STOP codon

  • To insert a STOP codon to the end of our Mira/Brazz StrepII constructs, we used the STOP+V0120 BioBrick as our vector (EcoR1/Xba1 digest) and our Miraculin/Brazzein construct as our insert (EcoR1/Spe1 digest)
  • Construct DNA used was from Miniprep 1 (Box 4)
  • ~1μg of DNA was digested in each reaction
Digestion Reactions
Mira Strep N Mira Strep C Brazz Strep N Brazz Strep C STOP+V0120 BioBrick
diH2O 15 14.5 13.5 11.5 6
Green FD buffer (10x) 2 2 2 2 2
DNA 1 1.5 2.5 4.5 10
EcoR1 1 1 1 1 1
Xba1 - - - - 1
Spe1 1 1 1 1 -


Digestion of Mira/Brazz+Strep and STOP codon BioBrick

  • Circled bands were cut and gel purified
   Miraculin + StrepII = 730 bp
   Brazzein + StrepII = 230 bp
   STOP + V0120 = 3200 bp


  1. 1kb Plus Ladder
  2. Miraculin C Strep E/S
  3. Miraculin N Strep E/S
  4. Brazzein C Strep E/S
  5. Brazzein N Strep E/S
  6. STOP + V0120 E/X
  7. 1kb Plus Ladder
   Gel Purification Specs
   Mira N StrepII E/S: 3.0 ng/μL
   Mira C StrepII E/S: 2.8 ng/μL
   Brazz N StrepII E/S: 3.4 ng/μL
   Brazz C StrepII E/S: 1.3 ng/μL
   STOP+V0120 BB E/X: 7.1 ng/μL


Ligation of Mira/Brazz+Strep and STOP codon BioBrick

Ligation Reactions
Mira StrepII N + STOP w/ v0120 BB Mira StrepII C + STOP w/ v0120 BB Brazz StrepII N + STOP w/ v0120 BB Brazz StrepII C + STOP w/ v0120 BB Control STOP w/ v0120 BB
diH2O 4.5 4.5 9 5 12
T4 DNA ligase buffer (10x) 2 3 2 2 2
DNA Insert 7.5 7.5 2 6 0
DNA Backbone 5 5 6 6 5
T4 DNA ligase 1 1 1 1 1


Transformation

  • Transformed 5 μL ligation mix with 15 μL TURBO e. coli cells
  • Plated on LB + Amp plates and left in 37°C incubator overnight

Team Fence

PCR of the arabidopsis promoters with the newly extracted DNA and the older DNA. FAIL

Arp2 promoter PCR failed.

Exp2 promoter PCR failed.

Phenol Chloroform DNA Extraction

  • resuspend DNA in approximately 200μL molecular grade pure water
  • add 1 volume phenol chloroform
    • when pipetting the phenol chloroform be sure to pipette from closer to the middle level of the liquid as the top two centimeters do not contain what we want
  • centrifuge at top speed for 5 minutes
  • collect the aqueous top layer and transfer to a clean microcentrifuge tube
    • the remaining liquid is toxic and must be carefully disposed of in the "toxic waste" bottle in the fume hood
  • add 1 volume phenol chloroform
  • centrifuge at top speed for 5 minutes
  • collect the aqueous top layer and put into a fresh tube
  • add three volumes 100% ethanol and 1/10 volume sodium acetate
  • allow solution to incubate on ice for 15 minutes
  • centrifuge at top speed for 10 minutes
  • pipette off the aqueous solution leaving a pellet of DNA in the bottom of the tube
  • wash in 500μL 70% ethanol
  • mix tube by inverting
  • centrifuge again for 10 minutes at top speed
  • air dry pellet by leaving tube open on bench (not on ice) til dry
  • after pellet has dried resuspend DNA in desired volume of H2O or buffer EB
    • presence of DNA can be confirmed by running a small sample on a gel

THE END

Team Allergy

  • Genomic DNA extraction
  • Grew up cultures of transformations from yesterday--tubes weren't cloudy so we grew overnight cultures again


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