┌──────────── Escherichia coli ED1a (1)  
                                     ┌┴──────────── Escherichia coli 536 (4)  
                                    ┌┴─ Escherichia coli (10-750/750) E2348/69 (8)  
                                   ┌┴───────────┬──────────── Escherichia coli SE15   
                                  ┌┤            └──────────── Escherichia coli M605   
                                  │└┬──────────────────────── Escherichia coli TA206   
                      ┌───────────┤ └──────────── Escherichia coli H299   
          ┌───────────┤           └──────────── Escherichia coli (10-750/750) CFT073 (2)  
         ┌┤           └──────────────────────── Escherichia coli B354   
         │└┬──────────── Escherichia coli SMS-3-5   
        ┌┤ └─ Escherichia coli IAI39 (4)  
┌───────┤└──────────── Escherichia coli UTI89 (1)  
│       └──────────── Escherichia coli (10-750/750) APEC O1 (1)  
┤  ┌──────────── Escherichia coli MS 21-1   
│  │           ┌──────────── Escherichia coli E24377A (1)  
└──┤           │                             ┌──────────── fig|1040638.4.peg.4918 O104:H4 str. LB226692 (3)  
   │           │                 ┌───────────┴─ Escherichia coli B088 (7)  
   │           │                ┌┴──────────────────────── Escherichia coli MS 69-1   
   └───────────┤       ┌────────┴─ Escherichia coli 042 (3)  
               │ ┌─────┴───────── Escherichia coli FVEC1302 (3)  
               │┌┴┬─ Escherichia coli (1-723/740) H591 (5)  
               ││ └────────── Escherichia coli H736   
               └┤  ┌─ Escherichia coli SE11   
                │ ┌┴─ Escherichia coli K12 (23)  
                │┌┴──────────── Escherichia coli HS (1)  
                └┤┌──────────── Escherichia coli 101-1   
                 └┤             ┌─ Escherichia coli (1-723/741) O111:H- str. 11128 (1)  
                  │            ┌┴──────────── Escherichia coli (1-723/741) E110019 (1)  
                  └┬───────────┴─ Escherichia coli EC4100B (2)  
                   └──────────────────────┬─ Escherichia coli O55:H7 str. CB9615   
                                          └───────────┬─ Escherichia coli 1044A (19)  
                                                      └┬─ Escherichia coli O157:H7 EDL933 (1)  
                                                       └──────────── Escherichia coli O157:H7 str. EC869 (2)  
  

  
Potassium efflux system KefA protein / Small-conductance mechanosensitive channel
 (31)
  
Potassium efflux system f786 / Small-conductance mechanosensitive channel
 (1)
  
 Others 
(1)