┌─ Escherichia coli (156-495/672) 1044A (24)  
                                                                           ┌┴─ Escherichia coli (156-495/672) ATCC 8739 (1)  
                                                                          ┌┴─ Escherichia coli (156-495/672) O55:H7 str. CB9615   
                                                                         ┌┴─ Escherichia coli (156-495/672) O157:H7 str. EC4042 (6)  
                                                                        ┌┴─ Escherichia coli (156-495/672) B088   
                                                                       ┌┴┬─ Escherichia coli (156-495/672) MS 115-1   
                                                                      ┌┤ └─ Escherichia coli (156-495/672) TA280   
                                                                     ┌┤└─ Escherichia coli (156-495/672) K12 (33)  
                                                                    ┌┤└─ Escherichia coli (156-495/672) FVEC1302 (3)  
                                                                    │└┬─ Escherichia coli (156-495/672) MS 21-1   
                                                                   ┌┤ └─ Escherichia coli (156-495/672) MS 69-1   
                                                                  ┌┤└─ Escherichia coli (156-495/672) 042 (3)  
┌─────────────────────────────────────────────────────────────────┤└─ Escherichia coli (156-495/672) IAI39 (1)  
│                                                                 └─ Escherichia coli (156-495/672) SMS-3-5   
┤                                                                 ┌─ Escherichia coli (152-479/479) MS 115-1   
│                                                                 │┌─ Escherichia coli (89-416/416) MS 69-1   
└─────────────────────────────────────────────────────────────────┤│  ┌─ Escherichia coli (152-479/479) O55:H7 str. CB9615   
                                                                  ││ ┌┴─ Escherichia coli (152-479/479) 042 (1)  
                                                                  └┤┌┴┬─ Escherichia coli (86-412/412) MS 187-1   
                                                                   ││ └─ Escherichia coli (120-446/446) B str. REL606 (4)  
                                                                   ││    ┌─ Escherichia coli (152-479/479) IAI39 (1)  
                                                                   └┤   ┌┴─ Escherichia coli (152-479/479) MS 21-1   
                                                                    │  ┌┴─ Escherichia coli (152-479/479) SMS-3-5   
                                                                    │ ┌┴─ Escherichia coli (152-479/479) K12 (47)  
                                                                    │┌┴─ Escherichia coli (152-479/479) TA143   
                                                                    └┤ ┌─ Escherichia coli SE11   
                                                                     └┬┴─ fig|1040638.4.peg.2902 O104:H4 str. LB226692 (2) [2] 
                                                                      └┬─ Escherichia coli (123-450/450) IAI1 (1)  
                                                                       └┬─ Escherichia coli (152-479/479) O111:H- str. 11128 (4)  
                                                                        └┬─ Escherichia coli (123-450/450) B088   
                                                                         └─ Escherichia coli (123-450/450) E110019 (1)  
  
Hydrogenase-4 component D (EC 1.-.-.-) (16)
Hydrogenase-4 component B (EC 1.-.-.-) / Formate hydrogenlyase subunit 3 (14)
Others (1)