FIG. 1.

Intergenic region between pcaU and pcaI from Acinetobacter sp. strain ADP1. Dashed arrows, three 10-bp sequence repetitions located in the binding site of regulator protein PcaU; bracket, region protected from DNase I footprinting by PcaU; boxes, stretches of at least three successive adenosine residues. The distance from each stretch of As to the next one is given by a number underneath the sequence (printed open if the distance corresponds to one or multiple DNA helix turns). Vertical arrow, bending center for the 128-bp Bst UI-EcoRI fragment.