Team:Bielefeld-Germany/Amsterdam/Results

From 2012.igem.org

(Difference between revisions)
Line 69: Line 69:
<p class="more">
<p class="more">
</html>
</html>
-
All bacterial laccases ([https://2012.igem.org/Team:Bielefeld-Germany/Results/coli#Since_Regionals:_12.C2.A0L_Fermentation_E._coli_KRX_with_BBa_K863005 ECOL], [https://2012.igem.org/Team:Bielefeld-Germany/Results/halo#Since_Regionals:_12L_Fermentation_of_E._coli_Rosetta-Gami_2_with_BBa_K863022 BHAL], [https://2012.igem.org/Team:Bielefeld-Germany/Results/thermo#Since_Regionals:_12_L_Fermentation_of_E._coli_Rosetta_Gami_2_with_BBa_K863012 TTHL] and [https://2012.igem.org/Team:Bielefeld-Germany/Results/pumi#Since_Regionals:_12.C2.A0L_Fermentation_E..C2.A0coli_KRX_with_BBa_K863000 BPUL]) were successfully scaled-up to a working volume of 12 L.  Additional a optimized medium was chosen in the hope to enhance the protein amount. Activity assays were done for all four laccases ([https://2012.igem.org/Team:Bielefeld-Germany/Results/coli#Initial_activity_tests_of_purified_fractions ECOL], [https://2012.igem.org/Team:Bielefeld-Germany/Results/pumi#Since_Regionals:_Initial_activity_tests_of_purified_fractions BPUL], [https://2012.igem.org/Team:Bielefeld-Germany/Results/halo#Since_Regionals:_Initial_activity_tests_of_purified_fractions BHAL] and [https://2012.igem.org/Team:Bielefeld-Germany/Results/thermo#Since_Regionals:_Initial_activity_tests_of_purified_fractions TTHL]), especially in regard to optimal pH and temperature effects. Additionally a [https://2012.igem.org/Team:Bielefeld-Germany/Results/comparison comparison] of all four produced laccases concerning their activity has been done. In addition an active eukaryotic laccases of ''Trametes versicolor'' was produced with a self-designed Shuttle-vector in yeast ''Pichia Pastoris''.  
+
All bacterial laccases ([https://2012.igem.org/Team:Bielefeld-Germany/Results/coli#Since_Regionals:_12.C2.A0L_Fermentation_E._coli_KRX_with_BBa_K863005 ECOL], [https://2012.igem.org/Team:Bielefeld-Germany/Results/pumi#Since_Regionals:_12.C2.A0L_Fermentation_E..C2.A0coli_KRX_with_BBa_K863000 BPUL], [https://2012.igem.org/Team:Bielefeld-Germany/Results/halo#Since_Regionals:_12L_Fermentation_of_E._coli_Rosetta-Gami_2_with_BBa_K863022 BHAL] and [https://2012.igem.org/Team:Bielefeld-Germany/Results/thermo#Since_Regionals:_12_L_Fermentation_of_E._coli_Rosetta_Gami_2_with_BBa_K863012 TTHL]) were successfully scaled-up to a working volume of 12 L.  Additional a optimized medium was chosen in the hope to enhance the protein amount. Activity assays were done for all four laccases ([https://2012.igem.org/Team:Bielefeld-Germany/Results/coli#Initial_activity_tests_of_purified_fractions ECOL], [https://2012.igem.org/Team:Bielefeld-Germany/Results/pumi#Since_Regionals:_Initial_activity_tests_of_purified_fractions BPUL], [https://2012.igem.org/Team:Bielefeld-Germany/Results/halo#Since_Regionals:_Initial_activity_tests_of_purified_fractions BHAL] and [https://2012.igem.org/Team:Bielefeld-Germany/Results/thermo#Since_Regionals:_Initial_activity_tests_of_purified_fractions TTHL]), especially in regard to optimal pH and temperature effects. Additionally a [https://2012.igem.org/Team:Bielefeld-Germany/Results/comparison comparison] of all four produced laccases concerning their activity has been done. In addition an active eukaryotic laccases of ''Trametes versicolor'' was produced with a self-designed Shuttle-vector in yeast ''Pichia Pastoris''.  
<html>
<html>
</p>
</p>

Revision as of 02:46, 27 October 2012

Results since Regionals

Summary

coming soon

Laccases

The iGEM Team successfully produced four active bacterial laccases and an eukaryotic laccase (click for the results):

All bacterial laccases (ECOL, BPUL, BHAL and TTHL) were successfully scaled-up to a working volume of 12 L. Additional a optimized medium was chosen in the hope to enhance the protein amount. Activity assays were done for all four laccases (ECOL, BPUL, BHAL and TTHL), especially in regard to optimal pH and temperature effects. Additionally a comparison of all four produced laccases concerning their activity has been done. In addition an active eukaryotic laccases of Trametes versicolor was produced with a self-designed Shuttle-vector in yeast Pichia Pastoris.

Immobilization

The immobilization method on CPC-beads was further optimized. It has been proved that an incubation time of 6 hours is actually enough for immobilization. Furthermore, two additional laccases were successfully immobilized: from Bacillus halodurans C-125 (named BHAL) and from Thermus thermophilus HB27 (named TTHL). Moreover, activity tests were carried out on all four immobilized laccases (ECOL, BPUL, BHAL, and TTHL). All of them showed activity.

For immobilization results see here

Substrate Analysis

After the regional jamboree Team Activity Test, Team Immobilization and Team Substrate Analysis got laccases from the same pool from the Cultivation Team. With these laccases the degradation experiments of estradiol and ethinyl estradiol were repeated for the laccases BPUL and ECOL. The new laccases BHAL and TTHL were characterized for estradiol and ethinyl estradiol degradation too. Estradiol and ethinyl estradiol was futher analyzed on LC-MS/MS

For more information about the new results click here. Possible resulting degradation products after treatment of estradiol and ethinyl estradiol with TVEL0 were further analyzed via LCMS-MS. The results are shown here.

Cellulose binding domain

A lot of efforts were made, to change the order of the fusion proteins, to change the promoter and the RBS and to insert a different linker between the cellulose binding domain and the reporter GFP, but to the last day of lab work no green glowing colony to work with and execute the binding assay could be generated.

Read '''the Boston file'''

Shuttle vector

The laccase TVEL5 from Trametes versicolor was successfully cloned via the AarI restriction sites in the shuttle vector <partinfo>BBa_K863207</partinfo>. We could show that the gene of interest is integrating in yeast genome over site directed recombination and the produced protein of interest is secreted in the cultivation medium and detectable there. With this results we could show that the shuttle vector is working as expected and therefor can be used for the production of any protein of interest.

For more information read here.

55px Logo merck.jpg BioCircle.JPG Bielefeld2012 Evonik.jpg Bielefeld2012 Baxter.png Logo knauer.jpg Logo iit.jpg Bielefeld2012 BIEKUBA.jpg Logo biometra.jpg Logo bio-nrw.png Bielefeld2012 Logo ERASynbio.jpg