┌─ Escherichia coli (213-401/425) MS 175-1   
                                                                ┌┴─ Escherichia coli (139-327/351) OP50 (6)  
                                                               ┌┴─ Escherichia coli (213-401/425) K12 (70)  
                                                              ┌┴┬─ Escherichia coli (213-401/425) 2362-75 (30)  
                                                             ┌┤ └─ Escherichia coli (213-401/425) O55:H7 str. CB9615   
┌────────────────────────────────────────────────────────────┤└─ Escherichia coli (139-327/351) B088 (18)  
│                                                            └─ Escherichia coli (213-401/425) B185   
│                                                    ┌─ Escherichia coli (210-418/418) 2362-75 (30)  
│                                                   ┌┴─ Escherichia coli (210-418/418) S88   
┤                                                  ┌┴─ Escherichia coli (210-418/418) TA143 (1)  
│                                                 ┌┴─ Escherichia coli (210-418/418) K12 (13)  
│                                            ┌────┴┬─ Escherichia coli (210-418/418) MS 124-1 (10)  
│                                            │     └┬─ Escherichia coli (210-418/418) MS 119-7 (2)  
│                                    ┌───────┤      └─ Escherichia coli (210-418/418) 55989 (1)  
└────────────────────────────────────┤       └──── Escherichia coli (210-418/418) IAI39 (1)  
                                     │           ┌─────── Escherichia coli (211-408/418) IAI39 (1)  
                                     └───────────┤            ┌────── Escherichia coli O157:H7 str. EC4024   
                                                 └────────────┤    ┌─ Escherichia coli (210-418/418) 1827-70   
                                                              └────┤ ┌─ Escherichia coli (226-434/434) E24377A (1)  
                                                                   └┬┴─ Escherichia coli (DE3) BL21(DE3) (2)  
                                                                    └┬─ Escherichia coli (210-418/418) K12 (120)  
                                                                     └┬─ Escherichia coli (226-434/434) CFT073 (2)  
                                                                      └┬─ Escherichia coli (210-418/418) MS 78-1   
                                                                       └─ Escherichia coli (226-434/434) E110019 (2)  
  
Nucleoside permease NupG (9)
Xanthosine permease (8)
Putative nucleoside transporter YegT (7)