┌─ Escherichia coli O127:H6 str. E2348/69   
                                                                    ┌┴─ Escherichia coli E2348/69   
                                                                  ┌─┴─ Escherichia coli 2362-75 (2)  
                                                                 ┌┴┬─ Escherichia coli 55989 (1)  
                                                                ┌┤ └─ Escherichia coli H591 (2)  
                                                                │└┬─ fig|1040638.4.peg.2586 O104:H4 str. LB226692 (58)  
                                                               ┌┤ └─ Escherichia coli B088   
                                                               │└┬─ Escherichia coli 101-1 (36)  
                                                              ┌┤ └┬─ Escherichia coli O157:H7 str. EC4486   
                                                              ││  └─ Escherichia coli KO11 (2)  
┌─────────────────────────────────────────────────────────────┤└┬─ Escherichia coli K12 (16)  
│                                                             │ └─ Escherichia coli 1827-70 (3)  
│                                                             └─ Escherichia coli MS 21-1   
┤                                                            ┌─ Escherichia coli (1-247/252) 042 (2)  
│                                                            │     ┌─ Escherichia coli (1-247/252) 1044A (22)  
│                                                            │    ┌┴─ Escherichia coli (1-247/252) O157:H7 EDL933 (1)  
└────────────────────────────────────────────────────────────┤   ┌┴─ Escherichia coli (1-247/252) O55:H7 str. CB9615   
                                                             │  ┌┴─ Escherichia coli (1-247/252) K12 (14)  
                                                             │ ┌┴─ Escherichia coli (1-247/252) 1827-70   
                                                             └─┤  ┌─ fig|1040638.4.peg.2907 O104:H4 (12-247/252) str. LB226692 (8)  
                                                               │ ┌┴─ Escherichia coli (12-247/252) B7A (1)  
                                                               └┬┴─ Escherichia coli (1-247/252) MS 21-1   
                                                                └┬─ Escherichia coli (1-247/252) MS 69-1 (2)  
                                                                 └┬─ Escherichia coli (1-247/252) MS 107-1   
                                                                  └┬─ Escherichia coli (1-247/252) 101-1 (9)  
                                                                   └┬─ Escherichia coli (12-247/252) E24377A (3)  
                                                                    └┬─ Escherichia coli (1-247/252) IAI39 (2)  
                                                                     └─ Escherichia coli (1-247/252) FVEC1302 (3)  
  
Hydrogenase-4 component I (EC 1.-.-.-) (14)
Formate hydrogenlyase subunit 7 (12)
Others (2)