Figure 1From: Hidden hysteresis – population dynamics can obscure gene network dynamicsThe positive feedback gene network [[4]]. Cotransformation with plasmids pGN12 and pGN68 results in a positive feedback circuit. Inducer anhydrotetracycline (aTc) induces the copy of l u x R Δ from pGN12. Activator LuxR Δ binds to its cognate promoter P l u x I and induces another copy of l u x R Δ, thereby constituting positive feedback.Back to article page