┌─ Escherichia coli (1-209/211) SMS-3-5   
                                                                     ┌┴─ Escherichia coli (1-209/211) TA143   
                                                                    ┌┴─ Escherichia coli (1-209/211) K12 (123)  
                                                                   ┌┴┬─ Escherichia coli (1-209/211) M718   
                                                                  ┌┤ └─ Escherichia coli (1-209/211) WV_060327   
┌─────────────────────────────────────────────────────────────────┤└─ Escherichia coli (1-209/211) O111:H- str. 11128 (1)  
┤                                                                 └─ Escherichia coli (1-209/211) ED1a (1)  
│                                                                 ┌─ Escherichia coli (7-223/223) APEC O1 (17)  
└─────────────────────────────────────────────────────────────────┤┌─ Escherichia coli (7-223/223) ABU 83972 (19)  
                                                                  └┤ ┌─ Escherichia coli B088 (2)  
                                                                   └┬┴─ Escherichia coli K12 (85)  
                                                                    └┬─ Escherichia coli O26:H11 str. 11368   
                                                                     └┬─ Escherichia coli O103:H2 str. 12009   
                                                                      └─ Escherichia coli B171 (3)  
  

  
Formate dehydrogenase N gamma subunit (EC 1.2.1.2)
 (7)
  
Formate dehydrogenase O gamma subunit (EC 1.2.1.2)
 (7)