┬──────────────────────────────────────────────────── Escherichia coli 2362-75   
└───────┬─ Escherichia coli (21-175/175) APEC O1 (36)  
        └──────────────────────────────────────────────────────────┬─ Escherichia coli O157:H7 EDL933   
                                                                   └─ Escherichia coli K12 (94)  
  

  
Protein export cytoplasm chaperone protein (SecB, maintains protein to be exported in unfolded state)
 (4)