Difference between revisions of "Part:BBa K395008:Experience"

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<I>iGEM Tokyo_Tech 2010</I>
 
  
We designed a new promoter which is repressed by AHL and LuxR complex by changing one base of the existing BioBrick parts (BBa_R0061). <br><br>
 
In order to characterize K395008, Plux repression promoter, we constructed K395105 combining K395008 and K121013, which is a promoter-less gfp reporter (rbs-gfp-ter-ter) and this backbone is pSB6A1. We used a fusion of PlacIq (I14032) to gfp (K121013) as a positive control and used promoterless gfp (K121013) as a negative control. <br><br>
 
Overnight cultures of reporter strains grown at 37 °C containing appropriated antibiotics were diluted at least 1:100 and incubated at 37 °C as fresh cultures. After their OD<sub>590</sub> reached 0.6, added 3OC6HSL. After 3 hours of induction, fluorescence intensity was measured with flow cytometry. <br><br>
 
After 3 hours of induction by 3OC6HSL, the expression of GFP with 3OC6HSL dropped to 1/3 comparing with the expression without 3OC6HSL. <br><br>
 
 
[[IMAGE:tokyotech_LuxR repression promoter assay(R0061weak).jpg|400px]]
 
  
 
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Latest revision as of 04:04, 27 October 2010

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