FIG. 3.

Sequence organization of the phlA-phlF intergenic region. phlA and phlF indicate the start of the phlA and phlF open reading frames, respectively. Start indicates the transcriptional start of the phlACBD operon. The putative σ⁷⁰ −10 and −35 elements for phlA are underlined. The PhlF binding site, phO, is indicated, with its two inverted repeated sequences shown by arrows. The three regions protected by the PhlF footprint are boxed. From 5′ to 3′, these are box 1, box 2, and box 3, as referred to in the text. The CCAAT (ATTGG) motif of low-temperature-induced genes is underlined. The inverted repeated sequences flanking the −10 element are indicated with arrows. The accession number for this sequence is AF497760.