Team:Bielefeld-Germany/Labjournal/week16

Week 16 (08/13 - 08/19/12)

Monday August 13th

• Team Cultivation & Purification:
  • Today we discussed that we may get activity if we start to purify our laccases. So from now we will purify our products before measuring them. We hope this will bring promising results.

Tuesday August 14th

• Team Arabidopsis Laccase: Today our cDNA took a bath in ethanol and got cleaned. We are pretty sure our next PCR will be a lot more successful. Check protocols for further information about the cDNA washing via ethanol precipitation.

• Team Cultivation & Purification:
  • Made preculture of E.coli KRX without plasmid and with B.halodurans, BBa_K863000,BBa_K863005, BBa_K863010 and X.campestris as well as BBa_K525710 as positive control.

Wednesday August 15th

• Team Wiki: We set up some more wiki rules. Today´s rules were about citations. We agreed von some standards that will for sure help make the wiki a little prettier. Have a look:
  • Paper: Exampleman M et al. (2002). The example paper. The example journal (Volume): pages.
  • Website: Name of website, URL, Index, date site visited
  • Book: Examplewomen M et al. (1999). The example book. The example publisher (edition).

Next will be a standard for charts.

• Team Cultivation & Purification:
  • flask cutivation of E.coli KRX with laccases from B.halodurans, E.coli, B.pumilus, T.thermophilus and X.campestris. As positive control we used E.coli KRX with BBa_K525710 (Ligase A).

--> Settings: 1L flasks without baffles, final volume 250mL, autoinduction medium supplemented with 60µg/mL chloramphenicol, 37°C, 120rpm, single determination

Thursday August 16th

• Team Cultivation & Purification:
  • Today we harvested the cells from the cultivation on 08/15, disrupted them in equilibration buffer via sonification, centrifugated and purified the supernatant via HisTrap column. The purified samples in 500mM Imidazol were given to the activity test team.

Friday August 17th

Saturday August 18th

• Team bacterial laccases: Today we performed a ligation from the digestions we have done before. The ligation included of course the T7 promotor, the backbone pSB1C3 and the individual laccase genes. Ligation was performed with T4 ligase for 20 minutes at room temperature and stopped through a five minute incubation at 70°C.

Sunday August 19th

• Team Site Directed Mutagenesis:

Plasmidisolation of X.camp_2247- 1-4 and _3633 1-4 Test-restriktion of X.camp_2247 1-4 and _3633 1-4 with PstI for 3 hours 2247:1,2+4 no Mutation 3633:2+3 no Mutation. 2247-3 and 3633-1 only cut once (should be twice)

Picked 4 new colonys per site and plated the on CM-agar

Colony-PCR of 10 Colonies of T10 1,2,3,4 bands at 1100 - should be RFP 9 + 10 bands could be higher but not 1600 as needed… plated anyway for Test-restriktion.

55px