Regulatory network involving three two component systems. The RRs DVU0804, DVU0110, and DVUA0057 (each colored differently) have overlapping targets. Objects are not drawn to scale. This is a conservative list of the most likely targets, and the complete list of peaks is available in Table S4 in Additional file 1. Where present, predicted σ54-dependent promoters are indicated. No binding site motifs have been validated for these RRs. CDP, conserved domain protein; eps, exopolysaccharide; GT, glycosyl transferase; HD, HD-GYP domain; HIT, HIT family protein; HK, histidine kinase; PEP-CTERM, Pro-Glu-Pro carboxy-terminal domain; RE, restriction endonuclease; reg, regulator; RR, response regulator; TPR, tetratricopeptide repeat domain. For more gene descriptions see Table S5 in Additional file 1.