┌──────── Escherichia coli MS 69-1   
             ┌────────┴───────── Escherichia coli MS 116-1   
            ┌┴───────────────── Escherichia coli SMS-3-5   
           ┌┴───────── Escherichia coli MS 124-1 (1)  
   ┌───────┴─ Escherichia coli MS 107-1   
┌──┴─ Escherichia coli MS 145-7   
┤     ┌─ Escherichia coli B7A (1)  
└─────┤        ┌─ Escherichia coli K12 (78)  
      │        │   ┌───────── fig|6666666.5357.peg.2244 TY-2482 strain   
      └────────┤  ┌┴───────── Escherichia coli O26:H11 str. 11368   
               │ ┌┴───────── Escherichia coli TA280   
               │┌┴┬───────── Escherichia coli B str. REL606 (2)  
               └┤ └───────── Escherichia coli MS 21-1   
                └┬───────── Escherichia coli MS 146-1   
                 └────────┬─────────────────────────────────────────── Escherichia coli TA143   
                          └┬───────────────── Escherichia coli SE15   
                           └┬─ Escherichia coli 042 (12)  
                            └┬───────── Escherichia coli 2362-75 (18)  
                             └───────── Escherichia coli H299   
  

  
Topoisomerase IV subunit A (EC 5.99.1.-)
 (18)
  
 Others 
(1)