┌─ Escherichia coli (21-403/403) ATCC 8739 (20)  
                                                                      ┌┴─ Escherichia coli MS 187-1   
                                                                     ┌┴┬─ Escherichia coli (21-403/403) 53638  [2] 
                                                                    ┌┤ └─ fig|6666666.5357.peg.714 TY-2482 strain (16)  
                                                                   ┌┤└─ Escherichia coli (21-403/403) O111:H- str. 11128   
                                                                  ┌┤└─ Escherichia coli 1044A (12)  
                                                                 ┌┤└─ Escherichia coli (21-403/403) O157:H7 (14)  
                                                                 │└┬─ Escherichia coli (21-403/403) K12 (12)  
                                                                 │ └┬─ Escherichia coli (DE3) BL21(DE3) (7)  
                                                                 │  └┬─ Escherichia coli (21-403/403) TA280   
                                                                ┌┤   └┬─ Escherichia coli FVEC1302 (2)  
                                                                ││    └┬─ Escherichia coli B354 (1)  
                                                                ││     └─ Escherichia coli (21-403/403) MS 69-1   
                                                               ┌┤└┬─ Escherichia coli (21-403/403) 536 (25)  
                                                               ││ └─ Escherichia coli ABU 83972 (1)  
┌──────────────────────────────────────────────────────────────┤└─ Escherichia coli TA143   
│                                                              └─ Escherichia coli (21-403/403) 042 (1)  
│                                                                  ┌─ Escherichia coli (29-411/414) E110019 (2)  
│                                                                 ┌┴─ Escherichia coli (29-411/414) B354   
│                                                                ┌┴─ Escherichia coli (29-411/414) ED1a (3)  
│                                                               ┌┴─ Escherichia coli (29-411/414) 536 (4)  
│                                                              ┌┴─ Escherichia coli (29-411/414) 2362-75 (12)  
│                                                             ┌┴─ Escherichia coli (29-411/414) SE15   
│                                                            ┌┤ ┌─ fig|1040638.4.peg.1746 O104:H4 (29-411/414) str. LB226692 (23)  
┤                                                            │└┬┴─ Escherichia coli (29-411/414) B7A (7)  
│                                                            │ └┬─ Escherichia coli (29-411/414) 53638 (5)  
│                                                           ┌┤  └┬─ Escherichia coli (29-411/414) 1212A (1)  
│                                                           ││   └─ Escherichia coli (29-411/414) 1044A (24)  
│                                                          ┌┤└─ Escherichia coli (29-411/414) DH1   
│                                                         ┌┤└─ Escherichia coli (29-411/414) K12 (18)  
│                              ┌──────────────────────────┤└─ Escherichia coli (4-367/370) str. K-12 substr. DH10B   
│                              │                          └┬─ Escherichia coli (29-411/414) 83972 (11)  
│                              │                           └┬─ Escherichia coli (29-411/414) MS 69-1   
└──────────────────────────────┤                            └─ Escherichia coli (29-411/414) 042 (5)  
                               │                                   ┌─ Escherichia coli (27-415/415) O26:H11 str. 11368   
                               │                                   │    ┌─ Escherichia coli (27-415/415) MS 116-1 (1)  
                               │                                   │   ┌┴─ Escherichia coli (27-415/415) 53638 (1)  
                               └───────────────────────────────────┤  ┌┴┬─ Escherichia coli (27-415/415) ATCC 8739 (1)  
                                                                   │ ┌┤ └─ Escherichia coli (27-415/415) K12 (10)  
                                                                   │┌┤└─ Escherichia coli (27-415/415) 1125A (24)  
                                                                   ││└─ Escherichia coli (27-415/415) B185 (1)  
                                                                   └┤  ┌─ Escherichia coli (27-415/415) UMN026 (3)  
                                                                    │ ┌┴─ Escherichia coli (12-400/400) 2362-75 (2)  
                                                                    │┌┴┬─ Escherichia coli (27-415/415) EC4100B   
                                                                    └┤ └─ Escherichia coli H591 (1)  
                                                                     │┌─ Escherichia coli (27-415/415) IAI39 (38)  
                                                                     └┤┌─ Escherichia coli (27-415/415) B088   
                                                                      └┤┌─ Escherichia coli (27-415/415) MS 124-1 (1)  
                                                                       └┤ ┌─ Escherichia coli (27-415/415) ED1a (1)  
                                                                        └┬┴─ Escherichia coli (27-415/415) 83972 (5)  
                                                                         └┬─ Escherichia coli (27-415/415) H299 (6)  
                                                                          └┬─ Escherichia coli (27-415/415) WV_060327 (15)  
                                                                           └─ Escherichia coli (27-415/415) O83:H1 str. NRG 857C   
  
Low affinity tryptophan permease (19)
Tryptophan-specific transport protein (16)
Tyrosine-specific transport protein (16)
Others (2)