Team:Goettingen/week20-2

V09_10

• Experiment:
  Plasmids were prepped using PeqGOLD MiniPrep Kit (Peqlab) accirding to the manual.

• Experiment:
  Test digestion of pSB1C3 (including motA, motB or yhjH) with the restriction enzymes EcoRI and PstI. Afterwards, the product was loaded in a 1% analytical gel in order to verify its success.
  
• Observations & Results:
  The digestion worked for all clones since fragments with the appropriate size were produced over all.

• Experiment:
  motA, motB or yhjH were digested with XbaI and PstI. The plasmids with the different promoters were treated with SpeI and PstI. The digestion was then controlled via gel-electrophoresis.
  
• Observations & Results:
  Since for all clones band of the expected size could be obtained these were isolated from the gel and purified using PeqGOLD Gelextraction Kit (Peqlab) according to the manual.

• Experiment:
  This the Quikchange PCR was performed using the designed primers and a new Pfu Turbo polymerase (see Quick Change protocol in "protocols"). Also this time four short fragments were produced first and subsequently combined to a complete final DNA fragment.
  
• Observations & Results:
  Once again the QC PCR failed for no PCR product was observed. Whether the primers, the enzyme or anything else cause the QC PCRs failure is not clear to us yet.

V09_11

• Experiment:
  motA, motB and yhjH were ligated nto the plasmid J61002 with different promoters (20E, 20I and 18C) according to the protocol.
  

• Experiment:
  The ligation products were transformed into the E. coli DH10B as described in the standard protocol.
• Observations & Results:
  The transformation was successful since numerous colonies were grown on all plates except for the negative control.

• Experiment:
  After consultation with our supervisor we decided to give the QC PCR another try using Phusion polymerase this time. The first reaction round resulting in the production of the four short fragments was prepared and subsequently analyzed on gel.
  
• Observations & Results:
  This time the QC PCR was successful! The gel showed stron bands of the expected size. Obviously the Pfu Turbo polymerase, which is known to be perfect for Quikchange was the reason for the previous failures.

V09_12

• Experiment:
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• Experiment:
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V09_13

• Experiment:
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• Experiment:
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• Experiment:
  Over night cultures were prepared:
  Psb1c3-MotA
  Psb1c3-MotB
  BL21
  DH10B