Multi-genome comparison of all sequenced Stx phages, the archetypal lambdoid phage, Lambda and Ф24
. A. Circos map depicting the MuMer alignment results with respect to Stx2 phage Ф24B. Each coloured segment represents a phage genome with the numbers on the external surface indicating genome size in kb. Inside the genome ring are hatch marks indicating gene locations and their respective coding strands. The inner circle is composed of coloured blocks that are indicative of gene conservation with Ф24B. The coloured swept arcs indicate sequence conservation and orientation of those sequences with respect to Ф24B. B. A multi-loci comparison . Loci corresponding to the genome annotation that have been marked are loci that have been used in previous multi-loci typing of Stx bacteriophages or are defined in Additional file 1: Table S 1.