Team:Bielefeld-Germany/Labjournal

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On this page we summarize the (successful) results and achievements of our teamwork.

Contents

Week 1: 2nd - 8th may

Bisphenol A:

  • cloning of <partinfo>K123000</partinfo> and <partinfo>K123001</partinfo> behind weak (<partinfo>J23103</partinfo>) and medium strong (<partinfo>J23110</partinfo>) constitutive promoter (each part and both parts polycistronic)
  • cloning of fusionprotein between <partinfo>K123000</partinfo> and <partinfo>K123001</partinfo>, also assembly behind weak and medium strong constitutive promoter
  • testing and establishing of HPLC method for [http://en.wikipedia.org/wiki/Bisphenol_A BPA] detection
  • expression of the successfully assembled BPA degrading BioBricks in E. coli [http://openwetware.org/wiki/E._coli_genotypes#TOP10_.28Invitrogen.29 TOP10]

S-layer:

  • successful PCR on the S-layer genes of [http://expasy.org/sprot/hamap/CORGL.html Brevibacterium flavum] and Corynebacterium crenatum
  • successful cloning of the S-layer gene of B. flavum without TAT-sequence

Organizational:

  • meeting with [http://www.bielefeld-marketing.de/de/index.html Bielefeld Marketing] to discuss our participation at the science festival [http://www.geniale-bielefeld.de/ GENIALE] in Bielefeld


Week 2: 9th - 15th may

Figure 1: HPLC results of the first experiment on BPA degradation in E. coli TOP10. Cultivations were carried out in LB medium with 100 mg L-1 BPA at 30 °C. Samples were taken at the beginning of the cultivation and after one day. The HPLC results are shown above (area of the BPA peak). BisdA + BisdB is the polycistronic gene and BisdABisdB is the fusion protein.

Bisphenol A:

  • assembly of <partinfo>K157011</partinfo> behind existing BPA degrading parts (for purification and testing of <partinfo>K123000</partinfo> and <partinfo>K123001</partinfo> in a cell free system)
  • HPLC results: fusionprotein between <partinfo>K123000</partinfo> and <partinfo>K123001</partinfo> can degrade BPA and seems to work better than the polycistronic version (compare fig. 1)

S-layer:

  • expression of the S-layer gene without TAT-sequence of B. flavum in E. coli [http://www.promega.com/products/cloning-and-dna-markers/cloning-tools-and-competent-cells/bacterial-strains-and-competent-cells/single-step-_krx_-competent-cells/ KRX] and [http://openwetware.org/wiki/E._coli_genotypes#BL21.28DE3.29 BL21-Gold(DE3)] after sequencing gave correct results
  • successful PCR on the S-layer gene of [http://ijs.sgmjournals.org/cgi/content/abstract/54/3/779 Corynebacterium halotolerans]

Organizational:

  • moving to our own room in the [http://www.cebitec.uni-bielefeld.de/ CeBiTec]


Week 3: 16th - 22nd may

Bisphenol A:

  • successful PCR on the [http://www.brenda-enzymes.org/php/result_flat.php4?ecno=1.18.1.2 NADP oxidoreductase] gene from E. coli TOP10

S-layer:

  • successful cloning of the complete S-layer gene cspB of B. flavum, C. crenatum and C. halotolerans
  • successful cloning of the S-layer genes of B. flavum and C. halotolerans without TAT-sequence, without lipid anchor and without both (only self-assembly domain)

Organizational:


Week 4: 23rd - 29th may

Bisphenol A:

  • establishing a new method for analysis of BPA concentrations (extraction + LC-ESI-QTOF-MS)

S-layer:


Organizational:

  • arrange a BBQ for our workgroup in the CeBiTec to get to know our coworkers
  • substantiating our contribution to the GENIALE


Week 5: 30th may - 5th june

Bisphenol A:

  • beginning of first characterization experiments for BPA degrading BioBricks (<partinfo>K123000</partinfo> and <partinfo>K123001</partinfo>)

S-layer:


Organizational:

  • meeting with Prof. [http://de.wikipedia.org/wiki/Alfred_Pühler Alfred Pühler] to plan our contribution to the [http://www.cebitec.uni-bielefeld.de/content/view/209/88/ CeBiTec symposium] in july
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