Figure 3
From: Computational prediction of Pho regulons in cyanobacteria
Genomic organization of the two-component system sphS/sphR genes and the Pi uptake system pst genes in cyanobacteria. A vertical arrow indicates that three tandem Pho boxes are found for the predicted operon with p < 0.01. A doted arrow represents a non-functional SphR binding site. The order of the operons does not reflect their actual positions on the chromosome, but rather it is a schematic illustration of the operons.