┌─────────────── Escherichia coli (14-147/147) O157:H7 EDL933 (21)  
                       ┌┴─────────────── Escherichia coli B185   
                      ┌┴─ Escherichia coli K12 (39)  
       ┌──────────────┴┬─ Escherichia coli (115-241/241) O55:H7 str. CB9615   
       │               └┬──────────────── Escherichia coli H736 (1)  
      ┌┤                └────────────────────────────── Escherichia coli IAI39 (1)  
      │└┬─ Escherichia coli E22 (3)  
      │ └┬─────────────── Escherichia coli ETEC H10407   
┌─────┤  └──────────────┬───────────────────────────── Escherichia coli 1827-70 (4)  
│     │                 └─ Escherichia coli (14-147/147) B088 (10)  
┤     └─────────────── Escherichia coli H299   
│       ┌─────────────── Escherichia coli WV_060327   
│       │                          ┌───── Escherichia coli MS 69-1   
└───────┤                ┌─────────┴─────────────── Escherichia coli APEC O1   
        │ ┌──────────────┴─ Escherichia coli 536 (15)  
        └┬┴─ Escherichia coli 042 (4)  
         └┬─────────────── Escherichia coli (14-147/147) CFT073 (5)  
          └──────────────┬─ Escherichia coli B354   
                         └┬─────────────── Escherichia coli (46-179/179) TA280   
                          └──────────────┬─ Escherichia coli FVEC1302 (3)  
                                         └──────────────┬─────────────── Escherichia coli SMS-3-5   
                                                        └─ Escherichia coli MS 21-1 (1)  
  

  
Type IV pilus biogenesis protein PilP
 (22)