Fig. 6

Genes duplicated in the E. coli strain O145:H28. The X axis corresponds to the linear map of the chromosome. Each group of spots connected by a horizontal dotted line corresponds to a single gene, which is shown to be duplicated in different positions of the chromosome. The different spots indicate the map positions of the different copies of the gene. Point shapes represent the strand on which a protein is encoded: filled circle for (+) strand and circle for (−) strand. Numbers correspond to the different duplicated genes, which have been numbered by their order starting from the origin of the chromosomal map. Black closed and open circles correspond to transposases. Colors and vertical bars define the six main regions that contain duplicated genes. See Additional file 1: Table S5 for the function of each duplicated gene