┌─ Escherichia coli (22-119/119) B088 (41)  
                                                    ┌┴─ Escherichia coli SE11   
                                                  ┌─┴─ Escherichia coli (1-96/106) IAI39 (4)  
                                          ┌───────┴─ Escherichia coli (1-96/107) MS 124-1 (4)  
┬─────────────────────────────────────────┴────────────────────────── Escherichia coli (1-92/107) MS 115-1   
└──────────────────────────────────────────────────┬─ Escherichia coli (12-98/99) SMS-3-5   
                                                   └┬─ Escherichia coli (12-98/99) 1044A (26)  
                                                    └┬─ Escherichia coli (12-98/99) K12 (81)  
                                                     └┬─ Escherichia coli (1-81/82) 042   
                                                      └┬─ Escherichia coli (12-98/99) 2362-75 (2)  
                                                       └┬─ Escherichia coli (12-98/99) NC101   
                                                        └┬─ Escherichia coli (12-98/99) SE15   
                                                         └┬─ Escherichia coli (12-99/99) 83972 (5)  
                                                          └─ Escherichia coli (12-98/99) 536 (7)  
  

  
Transcriptional regulator, ArsR family
 (12)
  
Hypothetical transcriptional regulator ygaV
 (2)