┌─────── Escherichia coli (56-103/105) SMS-3-5   
                                                 ┌───┴─────────── Escherichia coli (56-103/105) MS 115-1   
                                             ┌───┴┬──────── Escherichia coli (45-92/94) MS 116-1 (1)  
                                            ┌┤    └─────────── Escherichia coli (45-92/94) SE11   
                              ┌─────────────┤└──────── Escherichia coli (56-103/105) K12 (7)  
     ┌────────────────────────┤             └───────────── Escherichia coli (20-67/69) MS 145-7   
     │                        └─────────┬─ Escherichia coli (58-103/105) K12 (7)  
┌────┤                                  └─ Escherichia coli (56-103/105) MS 115-1   
│    └───┬────────────────────────────────────── Escherichia coli (69-118/121) KO11 (1)  
│        └──────┬─────────────── Escherichia coli (69-120/121) MS 146-1   
│               └───────┬───────────────────────────────────────── Escherichia coli (70-112/125) K12 (5)  
┤                       └─ Escherichia coli (69-120/121) E22 (2)  
│      ┌───────────────────────── Escherichia coli (75-119/119) ATCC 8739 (1)  
│      │                                   ┌──── Escherichia coli (62-109/111) B7A (1)  
│      │                                  ┌┴──────── Escherichia coli (55-101/104) MS 69-1   
└──────┤                               ┌──┴─ Escherichia coli (62-109/111) 83972 (3)  
       │     ┌─────────────────────────┴─ Escherichia coli (62-109/111) W (2)  
       │    ┌┴─ Escherichia coli (70-124/125) MS 119-7   
       └────┤         ┌─ Escherichia coli (1-43/47) B171   
            └─────────┤          ┌───────────── Escherichia coli (30-77/82) 536 (1)  
                      └──────────┤┌─ Escherichia coli (1-43/47) EC4100B   
                                 └┤┌─ Escherichia coli (70-118/122) CFT073 (13)  
                                  ││┌──── Escherichia coli (89-137/141) CFT073 (1)  
                                  └┤│            ┌─── Escherichia coli (45-98/99) O157:H7 str. EC869 (1)  
                                   ││           ┌┴───── Escherichia coli (70-124/124) E110019 (4)  
                                   ││      ┌────┴─ Escherichia coli (70-123/124) 536A (24)  
                                   └┤     ┌┴─ Escherichia coli (70-123/124) E2348/69 (1)  
                                    │     │  ┌───────────── Escherichia coli (45-98/99) TA271   
                                    │     │  │          ┌──────────── Escherichia coli (30-77/95) O26:H11 str. 11368   
                                    │     │  │      ┌───┴─ fig|1040638.4.peg.215 O104:H4 (30-78/82) str. LB226692   
                                    └─────┤  │     ┌┴──── Escherichia coli (70-118/122) H299   
                                          │  │    ┌┴─ Escherichia coli (70-118/122) IAI39 (9)  
                                          │  │   ┌┴──── Escherichia coli (70-118/122) F11 (13)  
                                          │  │┌──┴──┬─ Escherichia coli (30-78/82) MS 45-1   
                                          │  ││     └──┬─── Escherichia coli (100-153/154) CFT073 (6)  
                                          └──┤│        └┬─ Escherichia coli (1-48/49) CFT073   
                                             ││         └─ Escherichia coli (70-123/124) NC101 (10)  
                                             ││                  ┌─── Escherichia coli (90-145/145) APEC O1 (3)  
                                             ││               ┌──┴─ Escherichia coli (30-85/85) IHE3034 (4)  
                                             ││              ┌┴──── Escherichia coli (90-138/142) CFT073 (2)  
                                             ││             ┌┴─ Escherichia coli (70-118/122) H299 (10)  
                                             ││            ┌┴──────── Escherichia coli (30-78/82) ETEC H10407   
                                             ││           ┌┴─ Escherichia coli (70-125/125) 042   
                                             └┤          ┌┴┬─ Escherichia coli 042 (2)  
                                              │          │ └┬─── fig|1040638.4.peg.2290 O104:H4 str. LB226692   
                                              │         ┌┤  └──────── Escherichia coli (30-78/82) 83972 (1)  
                                              │         │└──┬─ Escherichia coli (30-78/82) 101-1   
                                              │   ┌─────┤   └┬─ Escherichia coli B185   
                                              │   │     │    └─ Escherichia coli (70-125/125) 042 (5)  
                                              │┌──┤     └──── Escherichia coli (70-118/122) ETEC H10407   
                                              ││  └───┬─ Escherichia coli (70-116/126) CFT073 (7)  
                                              ││      └┬──── Escherichia coli (30-78/82) O103:H2 str. 12009   
                                              ││       └─ Escherichia coli (70-118/122) E24377A (2)  
                                              └┤┌──── Escherichia coli (70-118/122) TA280   
                                               ││         ┌─ Escherichia coli (1-49/53) B171 (5)  
                                               ││        ┌┴─ Escherichia coli (1-48/53) E110019   
                                               ││    ┌───┴──────── Escherichia coli (1-49/53) MS 116-1   
                                               ││   ┌┴── Escherichia coli (30-83/84) MS 182-1   
                                               └┤  ┌┴─ Escherichia coli (78-118/122) 2362-75 (6)  
                                                │ ┌┴─────────────────────┬──── Escherichia coli (30-78/82) MS 107-1   
                                                │┌┤                      └──── Escherichia coli (301-349/353) B str. REL606 (1)  
                                                ││└──── Escherichia coli (45-92/97) SE15   
                                                ││         ┌─ Escherichia coli (62-110/114) MS 145-7 (19)  
                                                └┤       ┌─┴──── Escherichia coli (45-93/97) ETEC H10407   
                                                 │    ┌──┴─────── Escherichia coli (1-43/47) 1044A (24)  
                                                 │   ┌┴─ Escherichia coli (70-117/122) M718   
                                                 └───┤               ┌─ Escherichia coli (30-78/82) MS 146-1   
                                                     └───┬───────────┴─ Escherichia coli (1-43/47) MS 21-1   
                                                         └┬─ Escherichia coli (70-118/122) 042 (63)  
                                                          └┬──── Escherichia coli (70-118/122) K12 (7)  
                                                           └──── Escherichia coli (30-78/82) MS 175-1   
  
YeeU protein (antitoxin to YeeV) (40)
hypothetical protein (10)
YafW protein (antitoxin to YkfI) (9)
putative structure (4)
YfjZ protein (antitoxin to YpjF) (4)
antitoxin of the YpjF-YfjZ toxin-antitoxin system (1)
intergenic-region protein (1)
Others (2)