Team:Groningen/Construct
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Our construct idea is simple and effective: there will be a production of pigment under the regulation of a rotten-meat reactive promoter. When Bacillus subtilis senses the volatiles from the rotten meat, the rotten meat promoter becomes active thus allowing the production of downstream genes. We placed pigment genes under the control of the promoter so that the pigment would be produced when the promoter is activated.
We use our Bacillus subtilis backbone (BBa_K818000) that has sacA and a chloramphenicol resistance gene for chromosomal integration and antibiotic screening of transformants respectively. This backbone also has E. coli origin of replication, so it can be amplified inside E. coli.