Figure 2From: A positive feedback-based gene circuit to increase the production of a membrane proteinSchematics showing the different circuits tested. Plasmids pKB1(PF plasmid) and pKB2 (NPF control) are identical except for the absence of the luxR* element responsible for positive feedback on the latter. Plasmid pGN3 is the constitutive plasmid (CP).Back to article page