┌─ Escherichia coli K12 (27)  
     ┌─────────────────────────────────────────┴───────────────────── Escherichia coli MS 146-1   
┌────┴─ Escherichia coli IAI1 (1)  
┤               ┌─ Escherichia coli MS 124-1 (1)  
└───────────────┤                    ┌───────────────────── Escherichia coli SMS-3-5   
                └────────────────────┤ ┌───────────────────── Escherichia coli 1044A (25)  
                                     └┬┴───────────────────── Escherichia coli (6-203/203) 042 (1)  
                                      └┬─ Escherichia coli (6-203/203) E2348/69 (62)  
                                       └┬───────────────────── Escherichia coli SE11   
                                        └───────────────────── Escherichia coli FVEC1302 (3)  
  
Putative permease (10)