Figure 13

Genomic islands and conserved genes in PCC 7942. Starting from the outermost circle: First two circles: xenologs and ORFans are shown in red and blue respectively (both DNA strands are shown); third circle: regions of atypical three nucleotide composition (χ ² analyses, see methods) are shown as purple peaks; fourth circle: genes not classified as xenologs nor core genes are shown in gray (for simplicity both chains of DNA are shown as one); fifth circle, core genes in green (both DNA strands are shown). The genome was drawn using Genomeviz [53].