Team:Grenoble/Projet/Design/quorum
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Initially, both genes, MerR and LacI, are expressed repressing each other promoters: pLac and pMerT.
Coloration
The two populations encounter each other at the “interface”. At this location cells emit AHL closely to receivers.
The AHL molecules enter into the receiving cells and bind receptor protein to form a complex to up-regulate the promoter pCin. Allowing the expression of the three Lycopene synthesise enzymes coding crtB, crtE, crtI. These three enzymes produce the lycopene so we can observe a red stripe at the interface between receiving and senders.