┌─ Escherichia coli (15-125/145) IAI39 (2)  
                                                                ┌┴─ Escherichia coli (15-125/145) K12 (95)  
┌───────────────────────────────────────────────────────────────┴── Escherichia coli (15-125/145) APEC O1 (26)  
┤                                                             ┌─ Escherichia coli B185   
└─────────────────────────────────────────────────────────────┤ ┌─ Escherichia coli (15-127/127) B088 (60)  
                                                              └─┤ ┌── Escherichia coli (15-125/127) 042 (5)  
                                                                └┬┴─ Escherichia coli (1-112/113) FVEC1302 (3)  
                                                                 └┬─ Escherichia coli (5-116/117) K12 (26)  
                                                                  └┬─ Escherichia coli (15-126/127) E2348/69 (1)  
                                                                   └┬─ Escherichia coli (15-126/127) CFT073 (25)  
                                                                    └─┬─ Escherichia coli (1-111/113) MS 21-1   
                                                                      └─ Escherichia coli (1-112/113) SMS-3-5   
  

  
Inner membrane protein YiaB
 (9)
  
Inner membrane protein YiaA
 (2)
  
hypothetical protein
 (1)