┌─ Escherichia coli (15-469/469) APEC O1 (16)  
                                                                     ┌┴─ Escherichia coli 536 (1)  
                                                                    ┌┴─ Escherichia coli MS 200-1   
                                                                  ┌─┴┬─ Escherichia coli (15-469/469) E2348/69 (1)  
                                                                  │  └─ Escherichia coli ED1a (5)  
                                                                 ┌┤ ┌─ Escherichia coli K12 (66)  
                                                                 │└┬┴─ Escherichia coli H736   
                                                                 │ └┬─ Escherichia coli E22 (1)  
                                                                ┌┤  └┬─ Escherichia coli O157:H7 EDL933   
                                                                ││   └─ Escherichia coli 1044A (19)  
┌───────────────────────────────────────────────────────────────┤└┬─ Escherichia coli IAI39 (1)  
│                                                               │ └─ Escherichia coli MS 21-1 (2)  
┤                                                               └─ Escherichia coli H299   
│                                                                ┌─ Escherichia coli O111:H- str. 11128   
└────────────────────────────────────────────────────────────────┤┌─ fig|6666666.5357.peg.2092 TY-2482 strain   
                                                                 └┤┌─ fig|1040638.4.peg.5728 O104:H4 str. LB226692 (17)  
                                                                  ││ ┌─ Escherichia coli O26:H11 str. 11368   
                                                                  └┤┌┴─ Escherichia coli MS 124-1 (1)  
                                                                   ││   ┌─ Escherichia coli 2362-75 (21)  
                                                                   └┤  ┌┴─ Escherichia coli SE15   
                                                                    │ ┌┴─ Escherichia coli 536 (8)  
                                                                    │┌┴─ Escherichia coli 042 (1)  
                                                                    └┤ ┌─ Escherichia coli BL21   
                                                                     └┬┴─ Escherichia coli (12-484/484) 1827-70   
                                                                      └┬─ Escherichia coli K12 (57)  
                                                                       └┬─ Escherichia coli OP50   
                                                                        └─ Escherichia coli 1125A (11)  
  
Outer membrane stress sensor protease DegQ, serine protease (13)
HtrA protease/chaperone protein (12)
Others (2)