┌─ Escherichia coli (11-222/222) CFT073 (5)  
┌──────────────────────────────────────────────────────────────────┴─ Escherichia coli (11-222/222) APEC O1 (1)  
┤                                                                  ┌─ Escherichia coli 2362-75 (24)  
└─────────────────────────────────────────────────────────────────┬┴─ Escherichia coli 536 (4)  
                                                                  └┬─ Escherichia coli M718   
                                                                   └┬─ Escherichia coli SMS-3-5   
                                                                    └┬─ Escherichia coli K12 (94)  
                                                                     └┬─ Escherichia coli O157:H7 str. EC869 (2)  
                                                                      └─ Escherichia coli ETEC H10407   
  

  
Periplasmic thiol:disulfide interchange protein DsbA
 (7)
  
Periplasmic thiol:disulfide interchange protein, DsbA-like
 (2)