┌─ Escherichia coli (6-400/403) ATCC 8739 (10)  
                                                               ┌┴─ Escherichia coli (6-400/403) 53638   
                                                              ┌┴─ Escherichia coli (6-400/403) O111:H- str. 11128   
                                                             ┌┴─ Escherichia coli (6-400/403) O157:H7 (3)  
                                                            ┌┴┬─ Escherichia coli (6-400/403) 536 (22)  
                                                            │ └┬─ Escherichia coli (6-400/403) K12 (10)  
┌───────────────────────────────────────────────────────────┤  └┬─ Escherichia coli (6-400/403) MS 69-1   
│                                                           │   └─ Escherichia coli (6-400/403) TA280   
│                                                           └─ Escherichia coli (6-400/403) 042 (1)  
│                                                                  ┌─ Escherichia coli E110019 (2)  
│                                                                 ┌┴─ Escherichia coli B354   
│                                                                ┌┴─ Escherichia coli ED1a (3)  
│                                                               ┌┴─ Escherichia coli 536 (4)  
│                                                              ┌┴─ Escherichia coli 2362-75 (12)  
│                                                             ┌┴─ Escherichia coli SE15   
┤                                                            ┌┤┌─ Escherichia coli 53638 (5)  
│                                                            │└┤ ┌─ Escherichia coli 1044A (24)  
│                                                            │ └┬┴─ Escherichia coli 1212A (1)  
│                                                           ┌┤  └┬─ Escherichia coli B7A (7)  
│                                                           ││   └─ fig|1040638.4.peg.1746 O104:H4 str. LB226692 (23)  
│                                                          ┌┤└─ Escherichia coli K12 (18)  
│                                                         ┌┤└─ Escherichia coli DH1   
│                                                        ┌┤└─ Escherichia coli 83972 (11)  
│                             ┌──────────────────────────┤└─ Escherichia coli MS 69-1   
│                             │                          └─ Escherichia coli 042 (5)  
└─────────────────────────────┤                                    ┌─ Escherichia coli (10-414/415) O26:H11 str. 11368   
                              │                                    │     ┌─ Escherichia coli (10-414/415) MS 116-1   
                              │                                    │    ┌┴─ Escherichia coli (10-414/415) ATCC 8739   
                              └────────────────────────────────────┤   ┌┴─ Escherichia coli (10-414/415) 53638 (1)  
                                                                   │  ┌┴─ Escherichia coli (10-414/415) K12 (1)  
                                                                   │ ┌┴─ Escherichia coli (10-414/415) B185 (1)  
                                                                   │┌┴─ Escherichia coli (10-414/415) 1125A (10)  
                                                                   └┤┌─ Escherichia coli (10-414/415) B171 (10)  
                                                                    └┤┌─ Escherichia coli (10-414/415) UMN026   
                                                                     └┤┌─ Escherichia coli (10-414/415) B088   
                                                                      └┤┌─ Escherichia coli (10-414/415) EC4100B   
                                                                       └┤┌─ Escherichia coli (10-414/415) MS 124-1   
                                                                        └┤┌─ Escherichia coli (1-399/400) 2362-75 (2)  
                                                                         └┤┌─ Escherichia coli (5-414/415) IAI39 (1)  
                                                                          ││  ┌─ Escherichia coli (5-414/415) 83972 (4)  
                                                                          └┤ ┌┴─ Escherichia coli (1-399/400) MS 185-1   
                                                                           │┌┴─ Escherichia coli (5-414/415) ED1a (1)  
                                                                           └┤ ┌─ Escherichia coli (5-414/415) H299   
                                                                            └┬┴─ Escherichia coli (10-414/415) 042 (3)  
                                                                             └┬─ Escherichia coli (5-414/415) O83:H1 str. NRG 857C   
                                                                              └┬─ Escherichia coli (10-414/415) WV_060327   
                                                                               └─ Escherichia coli (5-414/415) 536 (14)  
  
Low affinity tryptophan permease (22)
Tryptophan-specific transport protein (15)
Tyrosine-specific transport protein (9)
Others (1)