Start End Size(bp) No._of_ORFs No._of_homologs_of_PAI-virulence_genes PAIs_homologous_to_this_region 257908 270540 12633 21 8 PAI I 536 (Escherichia coli 536) PAI I APEC-O1 (Escherichia coli APEC O1) LEE (Escherichia coli RW1374) LEE (Escherichia coli 12009) AGI-3 (Escherichia coli BEN2908) PAI II 536 (Escherichia coli 536) TAI (Escherichia coli O157:H7 EDL933) TAI (Escherichia coli O157:H7 EDL933) PAI III 536 (Escherichia coli 536) PAI V 536 (Escherichia coli 536) PAI II CFT073 (Escherichia coli CFT073) PAI II CFT073 (Escherichia coli CFT073) PAI-I AL862 (Escherichia coli AL862) SHI-1 (Shigella flexneri YSH6000T) SHI-1 (Shigella flexneri 2a str. 301) SHI-1 (Shigella flexneri 2a str. 2457T) SRL (Shigella flexneri YSH6000) 2068952 2077943 8992 9 5 PAI I APEC-O1 (Escherichia coli APEC O1) PAI I APEC-O1 (Escherichia coli APEC O1) LEE (Escherichia coli RW1374) LEE (Escherichia coli 12009) AGI-3 (Escherichia coli BEN2908) PAI II 536 (Escherichia coli 536) TAI (Escherichia coli O157:H7 EDL933) PAI III 536 (Escherichia coli 536) PAI V 536 (Escherichia coli 536) PAI II CFT073 (Escherichia coli CFT073) PAI II CFT073 (Escherichia coli CFT073) PAI-I AL862 (Escherichia coli AL862) SHI-1 (Shigella flexneri YSH6000T) SHI-1 (Shigella flexneri 2a str. 301) SHI-1 (Shigella flexneri 2a str. 2457T) SRL (Shigella flexneri YSH6000) 2987536 2999057 11522 17 2 PAI I APEC-O1 (Escherichia coli APEC O1) PAI I APEC-O1 (Escherichia coli APEC O1) LEE (Escherichia coli RW1374) LEE (Escherichia coli 12009) AGI-3 (Escherichia coli BEN2908) PAI II 536 (Escherichia coli 536) TAI (Escherichia coli O157:H7 EDL933) PAI III 536 (Escherichia coli 536) PAI V 536 (Escherichia coli 536) PAI II CFT073 (Escherichia coli CFT073) PAI II CFT073 (Escherichia coli CFT073) PAI-I AL862 (Escherichia coli AL862) SHI-1 (Shigella flexneri YSH6000T) SHI-1 (Shigella flexneri 2a str. 301) SHI-1 (Shigella flexneri 2a str. 2457T) SRL (Shigella flexneri YSH6000) 4509804 4518235 8432 8 7 SRL (Shigella flexneri YSH6000)