┌───────── Escherichia coli SMS-3-5   
                  ┌──────────────────────┴─ Escherichia coli IAI39 (1)  
             ┌────┴────────┬────────── Escherichia coli TA143   
        ┌────┤             └─────────────────── Escherichia coli 042 (1)  
   ┌────┤    └─ Escherichia coli H299   
   │    └─────┬───────────── Escherichia coli FVEC1302 (3)  
┌──┤          └────────┬───────────── Escherichia coli MS 21-1   
│  │                   └─────────────── Escherichia coli O83:H1 str. NRG 857C   
│  └──────────────────────────── Escherichia coli B354   
│                    ┌─ Escherichia coli 53638 (3)  
┤                   ┌┴───── Escherichia coli MS 115-1 (2)  
│              ┌────┴───── Escherichia coli K12 (12)  
│┌─────────────┴───── Escherichia coli ATCC 8739 (1)  
││    ┌─────────────────── Escherichia coli MS 69-1   
││    │                                                     ┌─ Escherichia coli ED1a (2)  
└┤    │                                            ┌────────┴───────── Escherichia coli NC101   
 │    │                                   ┌────────┴─ Escherichia coli 2362-75 (2)  
 │    │                                  ┌┴───── Escherichia coli 83972 (12)  
 │    │                                 ┌┴───── Escherichia coli 536 (1)  
 └────┤                            ┌────┴─ Escherichia coli F11 (2)  
      │                      ┌─────┴─ Escherichia coli M605   
      │┌─────────────────────┴──────────────────────── Escherichia coli SE15   
      ││               ┌─ Escherichia coli O55:H7 str. CB9615   
      ││          ┌────┴───── Escherichia coli 1044A (24)  
      ││         ┌┴────────────── Escherichia coli B185   
      └┤    ┌────┴─────────────────── Escherichia coli M718   
       │   ┌┴─────────────┬─────────────────── Escherichia coli 101-1 (5)  
       │   │              └─ Escherichia coli 1827-70   
       │   │                                 ┌───── Escherichia coli E24377A (1)  
       └───┤                                ┌┴─ Escherichia coli MS 78-1   
           │                               ┌┴───── Escherichia coli MS 182-1   
           │                      ┌────────┴───── Escherichia coli O111:H- str. 11128 (1)  
           │        ┌─────────────┴┬───── Escherichia coli MS 107-1   
           └────────┤              └───── Escherichia coli B088   
                    │┌───── Escherichia coli B171 (5)  
                    └┤    ┌─ Escherichia coli KO11 (2)  
                     └────┤     ┌───────── fig|1040638.4.peg.3768 O104:H4 str. LB226692 (3)  
                          └────┬┴────────────── Escherichia coli B7A (2)  
                               └─────────────┬─ Escherichia coli E110019 (1)  
                                             └────┬───── Escherichia coli EC4100B   
                                                  └─ Escherichia coli H591 (2)  
  
Selenoprotein O and cysteine-containing homologs (40)
Others (1)