Comparative analysis of the complete chromosome of the STEC O45:H2 strain SJ7 with two STEC O45:H2 and two STEC O103:H2 reference strains. The BLAST comparison of STEC chromosomes and the chromosome of E. coli O45:H2 strain SJ7 was generated using the BLAST Ring Image Generator (BRIG) with a minimum nucleotide sequence identity of 50%. The bacterial chromosomes from inside out represent E. coli O45:H2 SJ7 (black), E. coli O45:H2 FWEC0003 (dark purple), E. coli O45:H2 2011C-4251 (light purple), E. coli O103:H2 12009 (light blue), and E. coli O103:H2 2015C-3163 (dark blue). Color codes for different degrees of nucleotide sequence homologies based on comparison to SJ7 are listed. The prophages (red), genomic islands (navy), and virulence genes (yellow) annotated in the SJ7 chromosome are present at the outermost three rings.