Figure 1. Schematic representation of pRW plasmid derivatives.
(A) Circular representation of pRW901 showing the most important features. The plasmid carries five DNA sites for LacI (LacO) upstream of a polylinker flanked by EcoRI and HindIII restriction sites. (B) DNA base sequence of the constitutively active KAB-CGTG promoter [11] inserted between the EcoRI and HindIII sites to give pRW904. The promoter −10 and −35 hexamer elements are in bold and underlined.