┌─ Escherichia coli (19-463/499) MS 21-1   
┌─────────────────────────────────────────────────────────┴─ Escherichia coli (19-463/499) APEC O1 (7)  
│                                                                    ┌─ Escherichia coli (15-450/454) CFT073 (16)  
┤                                                                   ┌┴─ Escherichia coli (15-450/454) K12 (105)  
│ ┌─────────────────────────────────────────────────────────────────┴─ Escherichia coli (13-448/452) MS 119-7   
└─┤                                         ┌─ Escherichia coli MS 124-1 (1)  
  │                                         │┌─ Escherichia coli OP50   
  └─────────────────────────────────────────┤│   ┌─ Escherichia coli (18-462/462) B171 (1)  
                                            ││  ┌┴─ Escherichia coli (18-462/462) E22 (2)  
                                            └┤ ┌┴┬─ Escherichia coli EC4100B   
                                             │┌┤ └─ Escherichia coli KO11 (2)  
                                             ││└─ Escherichia coli SE11   
                                             └┤  ┌─ Escherichia coli (18-462/462) O157:H7 (21)  
                                              │ ┌┴─ Escherichia coli O55:H7 str. CB9615   
                                              └┬┴─ Escherichia coli 1827-70   
                                               └┬─ Escherichia coli (18-462/462) ATCC 8739 (1)  
                                                └┬─ Escherichia coli (18-462/462) K12 (41)  
                                                 └┬─ Escherichia coli MS 116-1   
                                                  └─ Escherichia coli MS 175-1   
  

  
Fructoselysine transporter FrlA, cationic amino acid permease
 (14)
  
Arginine/ornithine antiporter ArcD
 (2)
  
Putative APC family amino acid transport protein
 (2)
  
Putrescine importer
 (1)