Composite

Part:BBa_K419003:Experience

Designed by: YANG TUNG CHIN   Group: iGEM10_TzuChiU_Formosa   (2010-10-19)

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Applications of BBa_K419003

Verification of the Part BBa_k419003

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The DNA fragment of LuxR responsive promoter, LuxPR, was amplified from the part BBa_R0062 by PCR method. The LuxPR PCR products were purified and digested with EcoRI and PstI, then ligated with EcoRI-PstI cut pSB1C3, the iGEM 2010 standard backbone. We got the pSB1C3-LuxPR plasmid successfully. In addition, the lysis device DNA which contained holing and lysozyme genes was amplified from the part BBa_K112021. The lysis device PCR products were digested with Xba I and Pst I and ligated with the Spe I-Pst I treated pSB1C3-LuxPR vector. After transformation and plasmid preparation, the part BBa_k419003 for releasing system in our Neutrient Synthesizer was verified by EcoRI and PstI enzyme digestion in 1% agarose gel electrophoresis. The arrow (red) indicates the lysis device DNA fragment. The releasing system composite was transformed into DH5-Alpha E. coli for further experiment.

Demonstration of Releasing System [contains the part BBa_k419003 (pLuxPR-Lysis device) in the iGEM 2010 standard backbone pSB1C3]

A single colony of releasing system E. coli was inoculated in the LB/chloramphenicol medium at 37℃. After 8 h of culture, we found that the LuxPR was auto-activated and lysis device was expressed causing the lysis of E. coli host. In our observation, we found that the autolysis of the host bacterial was almost completed after 8 hours. The result indicated that other factors may be involved in the activation of the luxR responsive promoter.

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User Reviews

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