┌─ Escherichia coli (2-239/239) ABU 83972   
                                                                      ┌┴─ Escherichia coli (2-239/239) ED1a (2)  
                                                                     ┌┴─ Escherichia coli (2-239/239) K12 (119)  
                                                                    ┌┴─ Escherichia coli (2-239/239) MS 182-1 (1)  
                                                                   ┌┴┬─ Escherichia coli (2-239/239) TA143   
                                                                  ┌┤ └─ Escherichia coli (2-239/239) B354 (3)  
                                                                  │└┬─ Escherichia coli (2-239/239) TA271   
┌─────────────────────────────────────────────────────────────────┤ └─ Escherichia coli (2-239/239) M718   
┤                                                                 └─ Escherichia coli (2-239/239) MS 115-1   
│                                                                  ┌─ Escherichia coli OP50   
└──────────────────────────────────────────────────────────────────┤┌─ Escherichia coli O26:H11 str. 11368   
                                                                   └┤ ┌─ Escherichia coli K12 (87)  
                                                                    │┌┴─ Escherichia coli ETEC H10407   
                                                                    └┤  ┌─ Escherichia coli 83972 (7)  
                                                                     │ ┌┴─ Escherichia coli (7-251/251) CFT073   
                                                                     └┬┴─ Escherichia coli ED1a (1)  
                                                                      └┬─ Escherichia coli APEC O1 (9)  
                                                                       └┬─ Escherichia coli 536 (7)  
                                                                        └┬─ Escherichia coli (7-250/250) F11   
                                                                         └┬─ Escherichia coli (7-251/251) APEC O1   
                                                                          └─ Escherichia coli (7-250/250) 042 (9)  
  
Hypothetical response regulatory protein ypdB (12)
Hypothetical response regulatory protein yehT (9)