Team:Bielefeld-Germany/Labjournal

From 2011.igem.org

Revision as of 11:57, 2 August 2011

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

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 BPA detection
• expression of the successfully assembled BPA degrading BioBricks in E. coli TOP10

S-layer:

• successful PCR on the S-layer genes of Brevibacterium flavum and Corynebacterium crenatum
• successful cloning of the S-layer gene of B. flavum without TAT-sequence

Organizational:

• meeting with Bielefeld Marketing to discuss our participation at the science festival 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 KRX and BL21-Gold(DE3) after sequencing gave correct results
• successful PCR on the S-layer gene of Corynebacterium halotolerans

Organizational:

• moving to our own room in the CeBiTec

Week 3: 16th - 22nd may

Bisphenol A:

• successful PCR on the 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. Alfred Pühler to plan our contribution to the CeBiTec symposium in july

Week 6: 6th - 12th june

Organizational:

• presentation of the iGEM competition at the 2nd BIO.NRW (PhD) Student Convention

Week 7: 13th - 19th june

Bisphenol A:

• cloning of NADP oxidoreductase in pJET1.2 finally successful -> waiting for sequencing results to remove illegal restriction sites

Week 8: 20th - 26th june

Organizational:

• finishing our first press release
• all devices (thermocycler etc.) and materials (competent cells, polymerase, kits) from our sponsors arrived

Week 9: 27th june - 3rd july

• nothing new this week

Week 10: 4th july - 10th july

Bisphenol A:

• analyzing the influence of temperature, promotor intensity and the characteristics of the fusion protein on BPA degradation

Organizational:

• presenting our posters from the teams of 2010 and 2011 at the congress Biotechnologie2020+ in Berlin hosted by the "Bundesministerium für Bildung und Forschung" (Federal Ministry of Education and Research).

Week 11: 11th july - 17th july

Week 12: 18th july - 24th july

Week 13: 25th july - 31th july

Week 14: 1st august - 7th august