┌─ Escherichia coli 53638 (9)  
┌─────────────────┴─ Escherichia coli O26:H11 str. 11368   
┤  ┌────────────────────────────────────────── Escherichia coli SE11   
│  │   ┌─ Escherichia coli B088 (9)  
└──┤  ┌┴─ Escherichia coli O157:H7 EDL933   
   │ ┌┴─ Escherichia coli (3-178/178) K12 (69)  
   └┬┴───────────────────── Escherichia coli IAI39 (2)  
    └┬─ Escherichia coli O157:H7 EDL933   
     └┬───────────────────── Escherichia coli E24377A (1)  
      └─────────────────────────────────────────┬───────────────────── Escherichia coli ED1a  [2] 
                                                └┬─ Escherichia coli 2362-75 (20)  
                                                 └─────┬─ Escherichia coli MS 200-1 (2)  
                                                       └─────────────── Escherichia coli 536 (3)  
  

  
Periplasmic thiol:disulfide oxidoreductase DsbB, required for DsbA reoxidation
 (13)