┌─ Escherichia coli (4-134/136) SMS-3-5   
                                                                  ┌┴─ Escherichia coli (4-134/136) IAI39 (1)  
                                                                 ┌┴─ Escherichia coli (4-134/136) APEC O1 (9)  
                                                                ┌┴┬─ Escherichia coli (4-134/136) 2362-75 (31)  
                                                                │ └┬─ Escherichia coli (4-134/136) M718   
                                                               ┌┤  └─ Escherichia coli (4-134/136) 042 (6)  
                                                              ┌┤└─ Escherichia coli (4-134/136) B7A (2)  
┌─────────────────────────────────────────────────────────────┤└─ Escherichia coli (4-134/136) K12 (75)  
┤                                                             └─ Escherichia coli (4-134/136) O157:H7 EDL933 (1)  
│                                                         ┌─── Escherichia coli TA143   
└─────────────────────────────────────────────────────────┤┌─── Escherichia coli MS 69-1   
                                                          └┤ ┌─ Escherichia coli IAI39 (1)  
                                                           │┌┴── Escherichia coli M718   
                                                           └┤┌─ Escherichia coli B354   
                                                            ││   ┌─ Escherichia coli E110019 (10)  
                                                            └┤  ┌┴─ Escherichia coli MS 124-1 (1)  
                                                             │ ┌┴─ Escherichia coli H591 (2)  
                                                             │┌┴─ Escherichia coli 1827-70 (1)  
                                                             └┤┌─ fig|1040638.4.peg.2908 O104:H4 str. LB226692 (6)  
                                                              └┤  ┌─ Escherichia coli 042   
                                                               │┌─┴── Escherichia coli MS 21-1   
                                                               └┤┌─ Escherichia coli B171 (3)  
                                                                └┤ ┌─ Escherichia coli FVEC1302 (3)  
                                                                 └┬┴───── Escherichia coli TA280   
                                                                  └┬─ Escherichia coli SMS-3-5   
                                                                   └┬─ Escherichia coli K12 (11)  
                                                                    └┬── Escherichia coli (22-158/158) O157:H7 (25)  
                                                                     └─ Escherichia coli (1-136/137) 101-1 (11)  
  

  
Formate hydrogenlyase maturation protein hycH
 (22)
  
Hydrogenase-4 component J (EC 1.-.-.-)
 (5)
  
 Others 
(1)