┌───────────────────────────── Escherichia coli ED1a (1)  
│                                           ┌─ Escherichia coli (35-315/315) B088 (6)  
│                                          ┌┴─ Escherichia coli E24377A (9)  
│                          ┌───────────────┴───────────────┬─ Escherichia coli 1827-70 (1)  
│              ┌───────────┤                               └─ Escherichia coli (35-315/315) ATCC 8739 (2)  
┤              │           └┬─ Escherichia coli 55989   
│  ┌───────────┤            └┬──────────────── fig|1040638.4.peg.5359 O104:H4 str. LB226692   
│  │           │             └─ Escherichia coli 55989   
│  │           └────────┬─ Escherichia coli 042 (1)  
│  │                    └───────────────┬─ Escherichia coli B354   
└──┤                                    └─ Escherichia coli MS 69-1   
   │                                 ┌──────────────────────────────── Escherichia coli MS 21-1   
   │ ┌───────────────────────────────┴─ Escherichia coli IAI39 (2)  
   │┌┴──────────────────────────────────────────────── Escherichia coli H299   
   └┤ ┌─ Escherichia coli (35-315/315) O157:H7 (23)  
    │┌┴──────────────── Escherichia coli (10-290/290) O157:H7 str. EC508   
    └┤┌──────────────── Escherichia coli TA143   
     └┤┌─ Escherichia coli O157:H7 str. FRIK2000 (1)  
      └┤                ┌───────────────── Escherichia coli (35-315/315) B171 (2) [2] 
       │┌───────────────┴─ Escherichia coli B7A (3) [2] 
       └┤                               ┌─ Escherichia coli (35-315/315) K12 (6)  
        └───────────────┬───────────────┴─ Escherichia coli B str. REL606 (11)  
                        └┬─ Escherichia coli FVEC1302 (3)  
                         └┬─ Escherichia coli UMN026   
                          └───────────────────────────────── Escherichia coli M605   
  

  
Mhp operon transcriptional activator
 (24)
  
 Others 
(1)