┌─ Escherichia coli (1-293/300) 1044A (23)  
                                                                    ┌─┴─ Escherichia coli (1-293/300) O157:H7 EDL933 (1)  
                                                                   ┌┴── Escherichia coli (1-293/300) EC4100B   
                                                                  ┌┴── Escherichia coli (1-293/300) MS 124-1   
                                                                 ┌┴┬─ Escherichia coli (1-283/300) ETEC H10407   
                                                                ┌┤ └─ Escherichia coli (1-293/300) K12 (79)  
                                                                │└┬── Escherichia coli (1-293/300) O111:H- str. 11128   
                                          ┌─────────────────────┤ └┬── Escherichia coli (1-293/300) 2362-75 (2)  
                                          │                     │  └── Escherichia coli (1-293/300) B171 (1)  
┌─────────────────────────────────────────┤                     └─── Escherichia coli (1-293/300) M605 (1)  
│                                         └┬─ Escherichia coli (1-291/298) MS 116-1   
│                                          └─ Escherichia coli (1-293/300) MS 146-1 (3)  
┤                                                              ┌─ Escherichia coli 536 (8)  
│                                                            ┌─┴─ Escherichia coli SMS-3-5   
│                                                            │      ┌─ Escherichia coli M605 (1)  
└────────────────────────────────────────────────────────────┤     ┌┴── Escherichia coli 2362-75   
                                                             │    ┌┴─ Escherichia coli 83972 (15)  
                                                             │ ┌──┴── Escherichia coli SE15   
                                                             └─┤┌─ fig|6666666.5357.peg.2706 TY-2482 strain (10)  
                                                               └┤┌─ Escherichia coli K12 (46)  
                                                                └┤   ┌─ Escherichia coli 042 (5)  
                                                                 │ ┌─┴── Escherichia coli IAI1 (1)  
                                                                 └┬┴── Escherichia coli MS 115-1   
                                                                  └┬── Escherichia coli 101-1 (4)  
                                                                   └─┬─ Escherichia coli 1044A (5)  
                                                                     └─ Escherichia coli 1125A (19)  
  
Formate dehydrogenase O beta subunit (EC 1.2.1.2) (22)
Formate dehydrogenase N beta subunit (EC 1.2.1.2) (3)
Others (1)