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A) The promoter of qseA was mapped using primer extension. The promoter region of qseA contains two promoters, a distal promoter P1 and a proximal promoter P2 responsive to QseA. The proximal (P2) and the distal (P1) promoters, sequences and conserved −10 and −35 regions are shown; B) The +1, −10, and −35 promoter sites are indicated by bold typeface for the P1 and P2 promoters, respectively.
