The prophages WOVitA2, WOMelB, and WORiA are flanked on one end by a segment of genes that is conserved on a Rickettsial plasmid [36] (blue). In WOMelB and WORiA, a second conserved gene set (green), comprised of transcriptional regulators and the DNA repair gene radC, is found downstream of the Rickettsia gene homologs. This region is the prophage-flanking region in WOPip1 and WOVitA1. A third conserved gene segment (red) of ankyrin repeat proteins, a heat shock protein, and a conserved hypothetical protein, is found in WOVitA1 and flanking the prophage terminal gene in WORiB. Light gray: RepA; Dark gray: SNF2-family helicase; Black: patatin.