┌─ Escherichia coli (1-211/217) B171 (3)  
                                                                     ┌┴─ Escherichia coli (1-211/217) O103:H2 str. 12009   
                                                                    ┌┴─ Escherichia coli (1-211/217) O26:H11 str. 11368   
                                                                   ┌┴─ Escherichia coli (2-206/212) B088 (2)  
                                                                  ┌┴─ Escherichia coli (1-211/217) K12 (85)  
┌─────────────────────────────────────────────────────────────────┴─ Escherichia coli (7-217/223) APEC O1 (37)  
┤                                                                 ┌─ Escherichia coli ED1a (1)  
└─────────────────────────────────────────────────────────────────┤┌─ Escherichia coli WV_060327   
                                                                  └┤ ┌─ Escherichia coli M718   
                                                                   └┬┴─ Escherichia coli TA143   
                                                                    └┬─ Escherichia coli K12 (123)  
                                                                     └┬─ Escherichia coli O111:H- str. 11128 (1)  
                                                                      └─ Escherichia coli SMS-3-5   
  

  
Formate dehydrogenase O gamma subunit (EC 1.2.1.2)
 (7)
  
Formate dehydrogenase N gamma subunit (EC 1.2.1.2)
 (6)