┌─ Escherichia coli (16-249/255) K12 (16)  
                                                                      ┌┴─ Escherichia coli (1-233/239) 1827-70 (3)  
                                                                     ┌┴─ Escherichia coli (16-249/255) MS 21-1   
                                                                    ┌┴┬─ Escherichia coli (16-249/255) KO11 (2)  
                                                                    │ └┬─ Escherichia coli (1-233/239) O157:H7 str. EC4486   
                                                                   ┌┤  └─ Escherichia coli (16-249/255) 101-1 (36)  
                                                                  ┌┤└─ Escherichia coli (16-249/255) 55989 (1)  
                                                                 ┌┤└─ Escherichia coli (1-233/239) B088   
                                                               ┌─┤└─ Escherichia coli (16-249/255) H591 (2)  
┌──────────────────────────────────────────────────────────────┤ └─ fig|1040638.4.peg.2586 O104:H4 (16-249/255) str. LB226692 (58)  
│                                                              └┬─ Escherichia coli (16-249/255) 2362-75 (2)  
│                                                               └┬─ Escherichia coli (1-233/239) O127:H6 str. E2348/69   
┤                                                                └─ Escherichia coli (16-249/255) E2348/69   
│                                                            ┌─ Escherichia coli 042 (2)  
│                                                            │   ┌─ Escherichia coli MS 107-1   
└────────────────────────────────────────────────────────────┤  ┌┴─ Escherichia coli MS 21-1   
                                                             │ ┌┴─ Escherichia coli MS 69-1 (2)  
                                                             │ │  ┌─ fig|1040638.4.peg.2907 O104:H4 str. LB226692 (8)  
                                                             └─┤ ┌┴─ Escherichia coli B7A (1)  
                                                               │┌┴─ Escherichia coli (1-251/252) E24377A (3)  
                                                               └┤ ┌─ Escherichia coli (1-251/252) FVEC1302 (3)  
                                                                └┬┴─ Escherichia coli (1-251/252) IAI39 (2)  
                                                                 └┬─ Escherichia coli (1-251/252) 101-1 (9)  
                                                                  └┬─ Escherichia coli B185   
                                                                   └┬─ Escherichia coli (1-251/252) K12 (13)  
                                                                    └┬─ Escherichia coli (1-251/252) 1827-70   
                                                                     └┬─ Escherichia coli (1-251/252) O55:H7 str. CB9615   
                                                                      └┬─ Escherichia coli (1-251/252) O157:H7 EDL933 (1)  
                                                                       └─ Escherichia coli (1-251/252) 1044A (22)  
  
Hydrogenase-4 component I (EC 1.-.-.-) (15)
Formate hydrogenlyase subunit 7 (12)
Others (2)