┌───── Escherichia coli (301-353/353) B str. REL606 (1)  
┌───────────┴── Escherichia coli (30-81/82) MS 107-1   
│   ┌─────── Escherichia coli (30-82/82) O103:H2 str. 12009   
│   │        ┌─ Escherichia coli (70-121/122) 042 (63)  
┤   │       ┌┴── Escherichia coli (70-121/122) K12 (7)  
│   │     ┌─┴── Escherichia coli (30-81/82) MS 175-1   
│   │   ┌─┴────┬─ Escherichia coli (1-46/47) MS 21-1   
└───┤  ┌┤      └─ Escherichia coli (30-81/82) MS 146-1   
    │ ┌┤└── Escherichia coli (70-121/122) ETEC H10407  [2] 
    │┌┤└─ Escherichia coli (30-81/82) M718   
    ││└┬─ Escherichia coli (1-43/50) 042 (2)  
    ││ └┬─── fig|1040638.4.peg.2290 O104:H4 (1-43/50) str. LB226692   
    └┤  └───── Escherichia coli (30-81/82) 83972 (1)  
     │┌─── Escherichia coli (90-138/145) APEC O1 (3)  
     ││┌─ Escherichia coli (70-118/125) 042 (6)  
     │││       ┌────────── Escherichia coli (30-82/82) 536 (1)  
     └┤│      ┌┴─ Escherichia coli EC4100B   
      ││     ┌┴┬─ Escherichia coli (1-52/53) H591   
      ││   ┌─┤ └── Escherichia coli (89-140/141) CFT073 (1)  
      └┤ ┌─┤ └── Escherichia coli (70-121/122) CFT073 (12)  
       │ │ └┬─ Escherichia coli (70-118/124) E2348/69 (1)  
       │┌┤  └──┬─── Escherichia coli (45-93/99) O157:H7 str. EC869 (1)  
       │││     └─ Escherichia coli (70-118/124) 536A (29)  
       ││└───── Escherichia coli (45-97/99) TA271   
       └┤┌─ Escherichia coli (90-141/142) F11 (6)  
        ││       ┌─ Escherichia coli (62-114/114) MS 145-7 (19)  
        ││      ┌┴── Escherichia coli (45-97/97) ETEC H10407   
        └┤ ┌────┴───── Escherichia coli 1044A (24)  
         │┌┴┬── Escherichia coli (70-122/122) E24377A (2)  
         ││ └── Escherichia coli (70-122/122) TA280   
         └┤   ┌─ Escherichia coli (70-118/125) 042 (5)  
          │  ┌┴─ Escherichia coli (1-43/50) B185   
          │┌─┴─ Escherichia coli (30-82/82) 101-1   
          └┤┌── Escherichia coli (90-142/142) CFT073 (2)  
           └┤┌─ Escherichia coli (70-122/122) H299 (2)  
            ││   ┌─ Escherichia coli B171 (5)  
            └┤ ┌─┴───── Escherichia coli MS 116-1   
             │┌┴─ Escherichia coli (78-122/122) 2362-75 (6)  
             ││    ┌── Escherichia coli (70-122/122) M718   
             └┤   ┌┴── Escherichia coli (45-97/97) SE15   
              │  ┌┴── Escherichia coli E110019   
              │┌─┴───────── Escherichia coli (70-121/126) CFT073 (7)  
              └┤┌─ Escherichia coli (1-33/303) H736   
               ││   ┌── Escherichia coli (70-122/122) H299   
               └┤  ┌┴── fig|1040638.4.peg.215 O104:H4 (30-82/82) str. LB226692   
                │ ┌┴─────────── Escherichia coli (30-77/95) O26:H11 str. 11368   
                │ │   ┌─ Escherichia coli (1-42/49) CFT073  [2] 
                └─┤  ┌┴─ Escherichia coli (70-117/124) NC101 (10)  
                  │┌─┴─ Escherichia coli (30-82/82) MS 45-1   
                  └┤┌─ Escherichia coli (70-122/122) E24377A (9)  
                   └┤┌── Escherichia coli (70-122/122) F11 (13)  
                    ││ ┌─ Escherichia coli B171   
                    └┤ │                           ┌─── Escherichia coli (62-109/111) B7A (1)  
                     │ │                          ┌┴────── Escherichia coli (55-101/104) MS 69-1   
                     └─┤                        ┌─┴─ Escherichia coli (62-109/111) 83972 (3)  
                       │      ┌─────────────────┴─ Escherichia coli (55-102/104) KO11 (2)  
                       │    ┌─┴─ Escherichia coli (70-120/125) MS 119-7   
                       └────┤  ┌───────────── Escherichia coli (75-115/119) ATCC 8739 (1)  
                            └──┤     ┌───────── Escherichia coli (69-119/121) MS 146-1   
                               └─────┤    ┌────────────────── Escherichia coli (69-115/121) KO11 (1)  
                                     │ ┌──┴─────────────────────── Escherichia coli (70-112/125) K12 (5)  
                                     └─┤  ┌─ Escherichia coli (69-115/121) E22 (2)  
                                       └──┤                         ┌─ Escherichia coli (56-103/105) MS 115-1   
                                          └────────────────┬────────┴─ Escherichia coli (58-103/105) K12 (7)  
                                                           └───────┬───────── Escherichia coli (20-67/69) MS 145-7   
                                                                   └┬───── Escherichia coli (56-103/105) K12 (7)  
                                                                    └──┬───── Escherichia coli (45-92/94) MS 116-1 (1)  
                                                                       └┬──────── Escherichia coli (45-92/94) SE11   
                                                                        └──┬──────── Escherichia coli (56-103/105) MS 115-1   
                                                                           └───── Escherichia coli (56-103/105) SMS-3-5   
  
YeeU protein (antitoxin to YeeV) (40)
hypothetical protein (10)
YafW protein (antitoxin to YkfI) (8)
putative structure (4)
YfjZ protein (antitoxin to YpjF) (4)
antitoxin of the YpjF-YfjZ toxin-antitoxin system (1)
Z1226 protein (1)
Others (2)