┌── Escherichia coli (17-160/160) 042 (15)  
┌─────────────────────────────────────┴─ Escherichia coli (1-135/144) MS 182-1   
│                       ┌─ Escherichia coli (4-137/141) MS 45-1   
│                      ┌┴─ Escherichia coli (4-137/141) 536 (19)  
│                     ┌┴─ Escherichia coli (4-137/141) ED1a (1)  
│                    ┌┴┬─ Escherichia coli (4-137/141) MS 115-1   
┤                   ┌┤ └─ Escherichia coli (4-137/141) O157:H7 EDL933 (1)  
│                  ┌┤└─ Escherichia coli (4-137/141) K12 (99)  
│                  │└┬─ Escherichia coli (4-137/141) B185   
│                 ┌┤ └─ Escherichia coli (4-137/141) MS 69-1   
│ ┌───────────────┤└─ Escherichia coli (4-137/141) TA280   
│ │               └┬─ Escherichia coli (4-137/141) E2348/69 (1)  
└─┤                └─ Escherichia coli (4-137/142) WV_060327 (1)  
  │                                 ┌─ Escherichia coli (1-128/135) K12 (64)  
  │                                ┌┴─ Escherichia coli (1-128/135) 1044A (43)  
  └──────────┬─────────────────────┴─ Escherichia coli (1-128/135) 2362-75 (22)  
             └──────────────────────────────────────────────────────┬─ Escherichia coli (12-132/154) MS 116-1 (1)  
                                                                    └┬─ Escherichia coli (12-132/154) W (1)  
                                                                     └┬─ Escherichia coli (12-132/154) K12 (81)  
                                                                      └┬─ Escherichia coli (12-132/154) B185 (1)  
                                                                       └┬─ Escherichia coli (12-132/154) 042 (1)  
                                                                        └┬─ Escherichia coli (12-132/154) 2362-75 (26)  
                                                                         └┬─ Escherichia coli (12-132/154) F11 (1)  
                                                                          └─ Escherichia coli (12-132/154) B354 (11)  
  
HTH-type transcriptional regulator zntR (11)
Redox-sensitive transcriptional activator SoxR (8)
HTH-type transcriptional regulator cueR (3)
Mercuric resistance operon regulatory protein (2)