┌─ Escherichia coli MS 21-1   
┬──────────────────────────────────────────────────────────────────┴─ Escherichia coli (8-98/98) K12 (117)  
└──────────────────────────────────────────────────────────────────┬─ Escherichia coli ETEC H10407   
                                                                   └┬─ Escherichia coli 1827-70   
                                                                    └┬─ Escherichia coli K12 (121)  
                                                                     └┬─ Escherichia coli O55:H7 str. CB9615   
                                                                      └─ Escherichia coli H591 (4)  
  

  
Uncharacterized protein YohL
 (5)
  
Uncharacterized protein YaiN in in formaldehyde detoxification operon
 (2)