┌─ Escherichia coli IAI39 (1)  
                                                                      ┌┴─ Escherichia coli SMS-3-5   
                                                                     ┌┴─ Escherichia coli APEC O1 (9)  
                                                                    ┌┴─ Escherichia coli M718   
                                                                   ┌┴─ Escherichia coli 2362-75 (31)  
                                                                  ┌┴─ Escherichia coli 042 (6)  
                                                                 ┌┴─ Escherichia coli B7A (2)  
                                                                ┌┴┬─ Escherichia coli (1-135/136) OP50   
┌───────────────────────────────────────────────────────────────┤ └─ Escherichia coli K12 (74)  
│                                                               └─ Escherichia coli O157:H7 EDL933 (1)  
┤                                                              ┌── Escherichia coli (7-136/137) 042   
│                                                              │    ┌── Escherichia coli (7-136/137) TA143   
│                                                              │   ┌┴── Escherichia coli (7-136/137) MS 69-1   
└──────────────────────────────────────────────────────────────┤  ┌┴─ Escherichia coli (7-136/137) M718   
                                                               │ ┌┴─ Escherichia coli (7-136/137) IAI39 (1)  
                                                               │┌┴─ Escherichia coli (7-136/137) B354   
                                                               ││   ┌─ Escherichia coli (7-136/137) MS 124-1 (1)  
                                                               └┤  ┌┴─ Escherichia coli (7-136/137) E110019 (10)  
                                                                │ ┌┴─ Escherichia coli (7-136/137) 1827-70 (1)  
                                                                │┌┴┬─ Escherichia coli (7-136/137) H591 (2)  
                                                                └┤ └─ fig|1040638.4.peg.2908 O104:H4 (7-136/137) str. LB226692 (6)  
                                                                 │ ┌─ Escherichia coli (7-136/137) MS 21-1   
                                                                 └┬┴─ Escherichia coli (7-136/137) SMS-3-5   
                                                                  └┬─ Escherichia coli (7-136/137) K12 (27)  
                                                                   └┬── Escherichia coli (7-136/137) 1044A (25)  
                                                                    └┬─ Escherichia coli (7-136/137) FVEC1302 (3)  
                                                                     └──── Escherichia coli (7-136/137) TA280   
  
Formate hydrogenlyase maturation protein hycH (23)
Hydrogenase-4 component J (EC 1.-.-.-) (3)
Others (1)