Figure 1.
(A) PtetA-mRFP1-96bs-BAC plasmid map: nucleotide sequence of the tet regulatory region on the BAC plasmid, beginning with PtetA (-35 and −10 consensus sequences), TSS (+1), palindromic patterns corresponding to two TetR binding sites (blue), mRFP1 start site at +104, and 96bs start site at +778. (B) PN25-tetR sequence integrated in the E. coli genome: PN25 controlled TetR protein coding gene and the lambda attP site. Terminators t0 and T1 prevent transcription from the integrated promoters into the neighbouring regions of the E. coli genome.