┬────────────────────────────────────────────────────────────────── Escherichia coli (3-88/89) 1044A (12)  
└──────────────────────────────────────────────────────────────┬─── fig|1040638.4.peg.73 O104:H4 str. LB226692 (25)  
                                                               └┬─ Escherichia coli O111:H- str. 11128   
                                                                └──┬─ Escherichia coli O157:H7 str. EC4401   
                                                                   └─── Escherichia coli 1212A (13)  
  

  
Shiga-like toxin II subunit B precursor
 (3)
  
Shiga toxin I subunit B precursor
 (1)
  
 Others 
(1)