┌─ Escherichia coli (2-194/218) ATCC 8739 (1)  
                                                                    ┌┴─ Escherichia coli (2-194/218) 042 (69)  
                     ┌──────────────────────────────────────────────┴─ Escherichia coli (2-194/218) K12 (35)  
┌────────────────────┴─────────────────────────────────────── Escherichia coli (4-197/216) K12 (126)  
┤                                                              ┌─ Escherichia coli B171 (9)  
│                                                              │    ┌─ Escherichia coli 042 (7)  
└──────────────────────────────────────────────────────────────┤   ┌┴─ Escherichia coli SMS-3-5   
                                                               │  ┌┴─ Escherichia coli 1044A (23)  
                                                               │ ┌┴─ Escherichia coli EC4100B   
                                                               └┬┴─ Escherichia coli K12 (56)  
                                                                └┬─ Escherichia coli B354   
                                                                 └┬─ Escherichia coli 2362-75 (3)  
                                                                  └┬─ Escherichia coli 536 (12)  
                                                                   └┬─ Escherichia coli M605   
                                                                    └┬─ Escherichia coli APEC O1 (6)  
                                                                     └─ Escherichia coli WV_060327   
  

  
Putative regulator
 (12)
  
BarA-associated response regulator UvrY (= GacA = SirA)
 (3)
  
DNA-binding capsular synthesis response regulator RcsB
 (1)