┬─────────────────────────────────────── Escherichia coli (58-228/228) E2348/69 (28)  
└───────────────────────────────┬───────────────── Escherichia coli B171 (1)  
                                └┬─ Escherichia coli K12 (65)  
                                 └┬────────────────── Escherichia coli FVEC1302 (9)  
                                  └─────────────────┬────────────────── Escherichia coli O55:H7 str. CB9615   
                                                    └┬─ Escherichia coli 1044A (22)  
                                                     └─ Escherichia coli (21-191/191) O157:H7 EDL933 (1)  
  

  
Zinc uptake regulation protein ZUR
 (7)