Team:LCG-UNAM-Mexico:Journals:Uriel
From 2009.igem.org
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Again an Agarose was run 1hr. at 85 V. to se the relative concentration of each sample that is going to be use | Again an Agarose was run 1hr. at 85 V. to se the relative concentration of each sample that is going to be use | ||
for the ligation reaction. | for the ligation reaction. | ||
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Ligation Reaction: | Ligation Reaction: | ||
Line 714: | Line 711: | ||
To test for the activity of the [http://partsregistry.org/Part:BBa_K242100 multipromoter] that we designed and synthesized, we are going to | To test for the activity of the [http://partsregistry.org/Part:BBa_K242100 multipromoter] that we designed and synthesized, we are going to | ||
- | transform E. coli [https://2009.igem.org/Team:LCG-UNAM-Mexico/Resources/Strains#Expression_Strains BL21(DE3)plysS] from novagen. This strain uses a T7 phage polymerase that is controlled thorough Lac promoter. The multipromoter is composed of T7 & T3 promoters. | + | transform E. coli [https://2009.igem.org/Team:LCG-UNAM-Mexico/Resources/Strains#Expression_Strains BL21(DE3)plysS] from novagen. This strain uses a T7 phage polymerase that is controlled thorough Lac promoter. The multipromoter is composed of T7 & T3 promoters, we expect that our construction will respond to IPTG. |
- | Transformed cells were platted on LB medium with Kn and IPTG .5 mM | + | The IPTG preparation protocol we used is discribed [http://openwetware.org/wiki/IPTG HERE!!!] |
+ | |||
+ | Transformed cells were platted on LB medium with Kn and IPTG .5 mM and expect that the colonies will fluoresce | ||
and could be seeing with a transluminator. | and could be seeing with a transluminator. | ||
- | == | + | == Octuber 6, 2009 == |
- | + | We took a look to the LB Agar plates with a transluminator at a wavelength of 395nm but because we didn't have a | |
+ | filter for GFP emitting wavelength we couldn't discriminate for our wavelength of interest. | ||
- | + | We are going to try other approach this time with a microscope more suitable to see GFP. | |
- | + | ||
- | + | == October 7, 2009 == | |
- | + | ||
- | + | REGISTRY SITE FOR [http://partsregistry.org/wiki/index.php?title=Part:BBa_K242101 MULTIPROMOTER] BBa_K242101 | |
+ | |||
+ | m stands for multipromoter !! | ||
+ | |||
+ | Cultures were prepared as follows: | ||
+ | |||
+ | BL21/m+ BL21/m+ BL21/m- | ||
+ | 100 mL LB + + + | ||
+ | 100 µL Kan 30 µg/µL + + - | ||
+ | 100 µL Cam 20 µg/µL + + + | ||
+ | 10 µL IPTG 1M + - + | ||
+ | |||
+ | |||
+ | For the induction of protein production we started our culture at .1 abs 620nm in 100mL LB and waited until it reached 0.35 abs 620 nm then we added IPTG to a final concentration of 0.1mM and then we leave the culture media for four | ||
+ | hours. | ||
+ | |||
+ | 5mL of each culture were centrifuged at max speed and the supernatant was discarded. We prepared our samples | ||
+ | to see them. Using a microscope with suitable filters and light to see GFP we compared the cultures between them | ||
+ | |||
+ | Results: | ||
+ | Bl21/m+ Bl21/m+ Bl21/m- | ||
+ | IPTG + - + | ||
+ | ++++ ++ - Fluorescence | ||
[[Image:Gfp multi.JPG |280px]] | [[Image:Gfp multi.JPG |280px]] | ||
- | Great NEWS!!! our promoter worked for T7 polymerase | + | In frame is BL21/multipromoter with IPTG inducer at 100X. Unfortunately the microscope and camera were not suitable to check in full detail BL21/m- IPTG+, which gave no fluorescence, and Bl21/multipromoter IPTG-, which presented a diminished fluorescence. |
+ | |||
+ | This results support the functioning of multipromoter for T7 polymerase. | ||
+ | |||
+ | Great NEWS!!! our promoter worked for T7 RNA polymerase | ||
+ | |||
+ | For future experiments to get a better characterization look result site. | ||
== October 20, 2009 == | == October 20, 2009 == | ||
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== October 21, 2009 == | == October 21, 2009 == | ||
+ | Preparation of parts for sending them to the registry!!! | ||
+ | =References= | ||
+ | To see all the literature that we used to develop the construction of control system pleas visit | ||
+ | references site and look for ogr, cox, P2 and P4 papers [https://2009.igem.org/Team:LCG-UNAM-Mexico/Description#References References]. | ||
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Latest revision as of 03:48, 22 October 2009