Creation of a promoter library

Figure 1. Theoretical sensivity shift of the P_LuxR promoter to sense and distinguish different AHL concentrations.

The wild-type P_LuxR promoter ([http://parts.igem.org/Part:BBa_R0062 BBa_R0062]) gets activated in presence of AHL. In our project we need different sensitive promoters to distinguish between different levels of the AHL concentrations according to the different number of surrounding mines. Therefor we need to shift the dose-response curve of the initial [ http://parts.igem.org/Part:BBa_R0062 BBa_R0062] promoter. We decided to do site directed saturation mutagenesis (see below) to achieve a sensitivity shift. For more details please see the experimental results page for processing.

Site directed saturation mutagenesis PCR of the BBa_R0062 PluxR

Figure 2: Promoter mutation sites The wild type promoter from the biobrick [the BBa_R0062] was mutated using site directed saturation mutagenesis. The library shows the targeted sites for site directed saturation mutagenesis. The sequences for the library, the [http://parts.igem.org/Part:BBa_R0062 BBa_R0062], the [http://parts.igem.org/Part:BBa_K1216007 BBa_K1216007] and the wild type luxR promoter from literature Antunes et. al., 2007. are given. All assays were carried out in duplicates, results are presented as mean ± standard deviation.

We did site directed saturation mutagenesis of specific sites of the lux box according to the results taken from literature Antunes et. al., 2007. (see Figure 2).

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