┌──────────────────────────────────────────────────────────────── Escherichia coli B7A (1)  
┤                                                                ┌─ Escherichia coli IAI39 (2)  
│                                                             ┌──┴─── Escherichia coli MS 21-1   
└─────────────────────────────────────────────────────────────┤ ┌─── Escherichia coli O157:H7 str. EC4501 (1)  
                                                              └┬┴─── Escherichia coli HS (1)  
                                                               └┬─── Escherichia coli 53638 (1)  
                                                                └┬─── Escherichia coli B354   
                                                                 └┬─── Escherichia coli M718   
                                                                  └─ Escherichia coli K12 (85)  
  

  
3-phenylpropionate dioxygenase, alpha subunit (EC 1.14.12.19)
 (9)