┌─ Escherichia coli (373-437/437) K12 (135)  
                      ┌──────────────────────────┴─ Escherichia coli (374-425/426) MS 198-1   
┌─────────────────────┴────────────────────────────────────────────── Escherichia coli (378-449/449) K12 (18)  
│                                                    ┌── Escherichia coli TA280   
┤                                                  ┌─┴── Escherichia coli FVEC1302 (3)  
│                                                 ┌┴─ Escherichia coli M718 (1)  
└─────────────────────────────────────────────────┤ ┌─ Escherichia coli (374-445/445) K12 (98)  
                                                  └┬┴─ Escherichia coli O157:H7 EDL933   
                                                   └┬── Escherichia coli B354   
                                                    └┬─ Escherichia coli MS 119-7   
                                                     └─ Escherichia coli (374-445/445) 536 (29)  
  

  
D-serine permease DsdX
 (8)
  
High-affinity gluconate transporter GntT
 (2)
  
Transporter of gluconate family, does not transport gluconate
 (1)