Figure 3.

Relative positions and conservation of lineage-specific and lineage-dominant genome segments in 31 different E. coli O157:H7. Coordinates from the lineage-specific and lineage-dominant ORFs were plotted onto the genome of E. coli O157:H7 strain Sakai using the Microbial Genome Viewer [42]. The first ring (outermost) is + strand CDS, the second ring is - strand CDS, and the third ring is Codon Adaptation Index (CAI). Data from the individual strains are given in concentric rings from the periphery to the centre, with lineage I and II strains separated by a solid white ring. Green color indicates that the segment is present and red color indicates its absence. GC content is plotted on the innermost orange ring. a: S-loop#14; b: S-loop#16; c: S-loop#69; d: S-loop#69; r: S-loop#72; f: S-loop#78; g: S-loop#83; h: S-loop#85; i: Sp10 (S-loop#s91, 92, and 93); j: Backbone (ECs2126 - 27); k: S-loop#153; m:S-loop#244 (LEE); n: S-loop#274; o: S-loop#286. The origin and terminus are indicated by black bars extending from the outermost ring. Replichore 1 and replichore 2 are indicated by the outermost numbers.

Zhang et al. BMC Genomics 2007 8:121   doi:10.1186/1471-2164-8-121
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