┌─ Escherichia coli (4-771/771) MS 145-7   
┌──────────────────────────────────────────────────────────────────┴─ Escherichia coli (4-771/771) B354   
┤                                                                  ┌─ Escherichia coli MS 182-1 (1)  
└──────────────────────────────────────────────────────────────────┤┌─ Escherichia coli B171 (18)  
                                                                   └┤┌─ Escherichia coli M718   
                                                                    ││   ┌─ Escherichia coli K12 (23)  
                                                                    └┤  ┌┴─ Escherichia coli 53638 (1)  
                                                                     │ ┌┴─ Escherichia coli B185   
                                                                     └┬┴─ Escherichia coli MS 124-1 (1)  
                                                                      └┬─ Escherichia coli 1125A (12)  
                                                                       └┬─ fig|1040638.4.peg.3315 O104:H4 str. LB226692 (62)  
                                                                        └┬─ Escherichia coli TA280   
                                                                         └┬─ Escherichia coli UM146   
                                                                          └─ Escherichia coli E2348/69 (1)  
  

  
Ribonucleotide reductase of class Ia (aerobic), alpha subunit (EC 1.17.4.1)
 (13)
  
 Others 
(1)