┌─ Escherichia coli K12 (97)  
                                                                ┌┴─ Escherichia coli 1827-70   
                                                               ┌┴─ Escherichia coli SE15   
                                                              ┌┴─ Escherichia coli 536 (29)  
                                                             ┌┴─ Escherichia coli (15-314/314) E2348/69 (2)  
                 ┌───────────────────────────────────────────┴─ Escherichia coli M605   
┌────────────────┴──────────────────────────────────────── Escherichia coli (20-290/307) MS 115-1   
┤                            ┌─────────────────────────────────────── Escherichia coli (22-295/311) B171   
└────────────────────────────┤                               ┌─ Escherichia coli (18-294/313) TA143   
                             └───────────────────────────────┤┌─ Escherichia coli (18-294/313) 042 (1)  
                                                             └┤┌─ Escherichia coli (18-294/313) TA280   
                                                              └┤┌─ Escherichia coli (18-294/313) 1044A (45)  
                                                               ││   ┌─ Escherichia coli (18-294/313) M605   
                                                               └┤  ┌┴─ Escherichia coli (18-294/313) NC101 (9)  
                                                                │ ┌┴─ Escherichia coli (18-294/313) O83:H1 str. NRG 857C   
                                                                │┌┴─ Escherichia coli (18-294/313) M718   
                                                                └┤┌─ Escherichia coli (18-294/313) B354   
                                                                 └┤┌─ Escherichia coli (18-294/313) MS 107-1   
                                                                  └┤ ┌─ Escherichia coli (18-294/313) B171 (1)  
                                                                   └┬┴─ Escherichia coli (18-294/313) K12 (50)  
                                                                    └┬─ Escherichia coli (18-294/313) 101-1 (5)  
                                                                     └─ Escherichia coli (18-294/313) MS 78-1   
  
Zinc transporter ZitB (14)
Cobalt-zinc-cadmium resistance protein (7)
Cobalt-zinc-cadmium resistance protein CzcD (1)