Fig. 3From: Insights into the genome architecture and evolution of Shiga toxin encoding bacteriophages of Escherichia coliCommon genomic structure of Stx phages. To maintain consistency, all genomes were set to start at their terminase genes. Three general modules are identified. The first is related with DNA-packaging and morphogenesis (e.g. capsid, tails, packaging genes); The second is composed by the integration cassette and regulatory genes (e.g. lexA, Cro, Q antiterminator); The third is composed by the virulence (Shiga toxin A and B genes) and the lytic cassette (holin (S), endolysin (R) and i-spainin/o-spanin (Rz/Rz1) genes)Back to article page