Team:Groningen/26 July 2010

From 2010.igem.org

(Difference between revisions)
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Transformation ''B sub.''
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Transformation ''B sub.'' (according to [http://2010.igem.org/Team:Groningen/Protocols_for_Bacillus_subtilis_168 protocol])
Inoculated NZ8900 ΔTasA in 10 ml MM, overnight @ 37°C  shaker.
Inoculated NZ8900 ΔTasA in 10 ml MM, overnight @ 37°C  shaker.
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Plated on LB-agar with antibiotic Cm5/Spec100 and grown @ 37°C (colonies @ 30/7).
Plated on LB-agar with antibiotic Cm5/Spec100 and grown @ 37°C (colonies @ 30/7).
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Two -80°C stocks were made of ''B. sub'' NZ8900 ΔTasA with pNZ8901_E and  B. sub NZ8900 ΔTasA with pNZ8901_H.
Two -80°C stocks were made of ''B. sub'' NZ8900 ΔTasA with pNZ8901_E and  B. sub NZ8900 ΔTasA with pNZ8901_H.
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Chaplin expression (according to [http://2010.igem.org/Team:Groningen/Chaplins protocol])
Inoculated 4 Greiner tubes with pNZ9801 E6, E2, H1, H3 in 5 ml TY with antibiotic Km5 and Cm5.
Inoculated 4 Greiner tubes with pNZ9801 E6, E2, H1, H3 in 5 ml TY with antibiotic Km5 and Cm5.

Revision as of 14:50, 25 October 2010

iGEM Groningen 2010

Hydrophobofilm
pushing coatings into a greener future


Week 30



Jorrit

Tested transformation of week 29 on SDS-page with silver staining on the CFE, medium & pellet samples, no chaplains visible.


Transformation B sub. (according to protocol)

Inoculated NZ8900 ΔTasA in 10 ml MM, overnight @ 37°C shaker.

1 ml overnight culture NZ8900 ΔTasA in 10 ml fresh MM for 3 hours @ 37°C shaker.

Added approx. 1 µg plasmid E and H in two 2 ml tubes and incubated 30 min @ 37°C shaker.

Diluted in pre warmed TY (300 µl) and put for 45 min @ 37°C shaker.

Plated on LB-agar with antibiotic Cm5/Spec100 and grown @ 37°C (colonies @ 30/7).


Inoculated 4 H colonies and 4 E colonies in 5 ml TY with antibiotics Km5 ,Cm5 and Spec100 and put overnight @ 37°C shaker.

Two -80°C stocks were made of B. sub NZ8900 ΔTasA with pNZ8901_E and B. sub NZ8900 ΔTasA with pNZ8901_H.


Chaplin expression (according to protocol)

Inoculated 4 Greiner tubes with pNZ9801 E6, E2, H1, H3 in 5 ml TY with antibiotic Km5 and Cm5.

10 µl of OD cultures (pNZ9801 E6, E2, H1, H3) was taken and grown , overnight @ 37°C shaker, in 5 ml TY with antibiotic Cm5/Spec100 and Cm5.

Done growth curve with OD- measurement.

Of all measurementperiodes were taken 2 ml samples, spinned down and put supernatant and cell pellet in freezer.


Modellers::

We read and looked up some more articles on biofilm formation models. We found that Professor Van Loosdrecht in Delft knows a lot about this and planned a meeting with him. Joël, Arend, Laura, Djoke


Arend Jan


The PCR product from the insertion of Biobrick sites into the pNZ8048 plasmid was cleaned, digested with BamHI, and cleaned again. After cleanup the concentration was to low to continue with a ligation. The cleaned PCR product was used again for a digestion with BamHI and this time the enzyme was then heat inactivated (30min. 80C). To this mixture a 20X ATP solution was added and T4 ligase. After ligation the mixture was transformed to E.coli TOP10. Like before, the plasmid won’t be transformed to E.coli for some reason. The leftover ligation mixture was desalted by use of an osmotic filter and electroporated to Lactococcus lactis (Because the plasmid is originally a lactis plasmid. See next week).


At the same time we’re still trying to get rid of the IS element. Like before a restriction with MunI and XhoI was performed, this time with both enzymes from Fermentas, on the plasmids pNZ8901-bbs and pNZ8048.


pNZ8084 in left lane, pNZ8901-bbs in middle lane.


The fragments indicate that XhoI did not cut in the used buffer(G), while it should have 50-100% activity. Not continuing with restrictions but focusing on PCR to get rid of IS element.


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