┌── Escherichia coli (26-154/160) 042 (15)  
┌──────────────────────────────────────────────────┴── Escherichia coli (10-133/144) MS 182-1   
│                                                                   ┌─ Escherichia coli (3-129/137) IAI39 (43)  
┤                                                                  ┌┴─ Escherichia coli (3-129/135) K12 (64)  
│               ┌──────────────────────────────────────────────────┴─ Escherichia coli (3-129/135) 2362-75 (22)  
└───────────────┤                     ┌─ Escherichia coli (1-141/142) WV_060327 (1)  
                │                    ┌┴─ Escherichia coli E2348/69 (1)  
                └────────────────────┤┌─ Escherichia coli K12 (99)  
                                     ││  ┌─ Escherichia coli B185   
                                     └┤ ┌┴─ Escherichia coli TA280   
                                      │┌┴─ Escherichia coli MS 115-1   
                                      └┤ ┌─ Escherichia coli O157:H7 EDL933 (1)  
                                       └┬┴─ Escherichia coli MS 69-1   
                                        └┬─ Escherichia coli ED1a (1)  
                                         └┬─ Escherichia coli 536 (19)  
                                          └─ Escherichia coli MS 45-1   
  

  
HTH-type transcriptional regulator zntR
 (11)
  
HTH-type transcriptional regulator cueR
 (3)
  
Mercuric resistance operon regulatory protein
 (2)