Figure 5

GC content of three representative dnd -encoding genomic islands. GC content of dnd-encoding GIs are shown above their respective genetic maps, with blue and red region showing GC content above and below 50%, respectively. The dnd-encoding GIs consist of several modules, depicted by the coloured bars below their respective genetic maps. ORFs above the brown coloured bars were found in both dnd-positive and dnd-negative E. coli genomes. ORFs that are underlined by green bars are strictly associated with dnd-positive genomes only while ORFs underlined by the yellow bar are strain-specific.