┌─ Escherichia coli (28-466/485) E110019 (1)  
                                                                      ┌┴─ Escherichia coli (9-447/466) EC4100B   
                                                                     ┌┴┬─ Escherichia coli (9-447/466) B str. REL606 (3)  
                                                                    ┌┤ └─ Escherichia coli (9-447/466) WV_060327   
                                                                    │└┬─ Escherichia coli (28-466/485) K12 (114)  
                                                                    │ └┬─ Escherichia coli (9-447/466) M605   
                                                                   ┌┤  └┬─ Escherichia coli (9-447/466) NC101 (1)  
                                                                   ││   └─ Escherichia coli (80-518/537) SMS-3-5   
┌──────────────────────────────────────────────────────────────────┤└─ Escherichia coli (87-525/544) 042 (1)  
┤                                                                  └─ Escherichia coli (9-447/466) TA143 (1)  
│                                                                  ┌─ Escherichia coli ED1a (1)  
└──────────────────────────────────────────────────────────────────┤┌─ Escherichia coli IAI39 (1)  
                                                                   └┤┌─ Escherichia coli SE15   
                                                                    ││  ┌─ Escherichia coli B185   
                                                                    └┤ ┌┴─ Escherichia coli KO11 (2)  
                                                                     │┌┴─ Escherichia coli TA143   
                                                                     └┤┌─ Escherichia coli B7A (4)  
                                                                      └┤  ┌─ Escherichia coli EC4100B   
                                                                       │ ┌┴─ Escherichia coli K12 (111)  
                                                                       └┬┴─ Escherichia coli MS 21-1 (1)  
                                                                        └┬─ Escherichia coli SE11   
                                                                         └┬─ fig|6666666.5357.peg.2723 TY-2482 strain   
                                                                          └─ Escherichia coli O157:H7 str. EC4024   
  
Xanthine permease (11)
Putative purine permease YgfO (10)
putative transport protein (1)
Others (1)