┌─ Escherichia coli (10-462/467) K12 (6)  
┌─────────────────────────────────────────────────────────┴─ Escherichia coli (10-462/467) MS 115-1   
│                                                                   ┌─ Escherichia coli (4-449/452) MS 119-7   
│                                                                  ┌┴─ Escherichia coli (6-451/454) K12 (105)  
┤                                         ┌────────────────────────┴─ Escherichia coli (4-449/452) 2362-75 (16)  
│                                         │      ┌─ Escherichia coli MS 21-1   
│                                         │     ┌┴─ Escherichia coli IAI39 (1)  
└─────────────────────────────────────────┤    ┌┴┬─ Escherichia coli B354   
                                          │   ┌┤ └─ Escherichia coli (19-479/479) 042 (8)  
                                          │   │└┬─ Escherichia coli K12 (19)  
                                          └───┤ └┬─ Escherichia coli MS 196-1   
                                              │  └─ Escherichia coli BW2952 (3)  
                                              │┌─ Escherichia coli O111:H- str. 11128 (1)  
                                              └┤┌─ Escherichia coli B171 (1)  
                                               └┤┌─ Escherichia coli E110019 (11)  
                                                └┤┌─ Escherichia coli 1044A (25)  
                                                 └┤┌─ Escherichia coli E24377A (1)  
                                                  └┤┌─ Escherichia coli 101-1   
                                                   └┤ ┌─ Escherichia coli B185   
                                                    └┬┴─ Escherichia coli 53638 (1)  
                                                     └┬─ Escherichia coli 1827-70 (13)  
                                                      └─ Escherichia coli KO11 (2)  
  
Putrescine importer (19)
putative amino acid/amine transport protein (1)
Putative APC family amino acid transport protein (1)
Lysine-specific permease (1)