┌─ Escherichia coli APEC O1 (2)  
                                    ┌──────────┴─────────── Escherichia coli UM146   
                                   ┌┴─ Escherichia coli 536 (2)  
                        ┌──────────┴───────────────────────────────── Escherichia coli ED1a (1)  
             ┌──────────┴─────────── Escherichia coli E2348/69   
            ┌┴────────────────────── Escherichia coli H299   
 ┌──────────┴─ Escherichia coli ABU 83972 (4)  
┌┴┬─ fig|1040638.4.peg.1547 O104:H4 str. LB226692 (12)  
│ └┬─────────── Escherichia coli B171   
┤  └──────────┬─────────── Escherichia coli FVEC1412 (1)  
│             └┬────────────────────── Escherichia coli TA280   
│              └─────────── Escherichia coli 042 (2)  
└─────────┬─────────── Escherichia coli (DE3) BL21(DE3)   
          └┬─ Escherichia coli MS 115-1 (4)  
           └──────────┬─────────── Escherichia coli ETEC H10407   
                      └┬─────────── Escherichia coli H736   
                       └┬─────────── Escherichia coli MS 196-1   
                        └─ Escherichia coli K12 (8)  
  

  
Xanthine/uracil/thiamine/ascorbate permease family protein
 (17)
  
 Others 
(1)