┌─────── Escherichia coli (62-103/105) MS 115-1   
                                    ┌───┴──────── Escherichia coli (62-103/105) SMS-3-5   
                                ┌───┴┬──────── Escherichia coli (51-92/94) MS 116-1 (1)  
                               ┌┤    └──────────── Escherichia coli (51-92/94) SE11   
                       ┌───────┤└──── Escherichia coli (62-103/105) K12 (7)  
                   ┌───┤       └───────────── Escherichia coli (26-67/69) MS 145-7   
             ┌─────┤   └──────────── Escherichia coli (62-103/105) K12 (8)  
             │     └───────┬───── Escherichia coli (75-120/121) E22 (2)  
       ┌─────┤             └──────────── Escherichia coli (75-120/121) MS 146-1   
┌──────┤     └─────────────────────── Escherichia coli (74-112/125) K12 (5)  
│      └──────────────────────────── Escherichia coli (75-118/121) KO11 (1)  
│      ┌────────── Escherichia coli (75-119/119) ATCC 8739 (1)  
┤      │         ┌─── fig|1040638.4.peg.2290 O104:H4 str. LB226692   
│      │         │                            ┌──── Escherichia coli (307-349/353) B str. REL606 (1)  
│      │         │           ┌────────────────┴──── Escherichia coli (36-78/82) MS 107-1   
└──────┤         │       ┌───┴──── Escherichia coli (7-49/53) MS 116-1   
       │         │      ┌┴┬─ Escherichia coli (36-85/85) IHE3034 (4)  
       │         │     ┌┤ └─── Escherichia coli (96-145/145) APEC O1 (3)  
       │         │   ┌─┤└──── Escherichia coli (96-138/142) CFT073 (2)  
       └─────────┤   │ └───┬──── Escherichia coli (36-78/82) O103:H2 str. 12009   
                 │  ┌┤     └─ Escherichia coli (76-118/122) E24377A (2)  
                 │ ┌┤└──── Escherichia coli (76-118/122) ETEC H10407   
                 │ │└──┬─ Escherichia coli (36-78/82) 101-1   
                 │┌┤   └─ Escherichia coli (76-125/125) 042 (6)  
                 ││└─ Escherichia coli (76-125/125) 042 (3)  
                 ││          ┌─ Escherichia coli (51-93/97) ED1a (19)  
                 ││        ┌─┴──── Escherichia coli (51-93/97) ETEC H10407   
                 └┤     ┌──┴────── Escherichia coli (1-43/47) 1044A (24)  
                  │ ┌───┴─ Escherichia coli (76-117/122) M718   
                  │┌┴──── Escherichia coli (76-118/122) TA280   
                  ││                                          ┌─ Escherichia coli (69-109/111) 83972 (5)  
                  ││                                       ┌──┴──────── Escherichia coli (62-101/104) MS 69-1   
                  └┤                  ┌────────────────────┴─ Escherichia coli (69-109/111) W (2)  
                   │        ┌─────────┴─ Escherichia coli (76-124/125) MS 119-7   
                   │   ┌────┴─ Escherichia coli (1-43/47) B171   
                   └───┤          ┌─────────── Escherichia coli (36-77/95) O26:H11 str. 11368   
                       │       ┌──┴─ fig|1040638.4.peg.215 O104:H4 (36-78/82) str. LB226692   
                       └───────┤ ┌──── Escherichia coli (42-84/88) SMS-3-5 (13)  
                               └─┤┌──── Escherichia coli (76-118/122) H299   
                                 ││┌─ Escherichia coli (76-118/122) IAI39 (9)  
                                 └┤│      ┌─ Escherichia coli (76-123/124) NC101 (11)  
                                  ││   ┌──┴─── Escherichia coli (76-123/124) 83972 (6)  
                                  ││┌──┴─ Escherichia coli (36-78/82) MS 45-1   
                                  └┤│       ┌─── Escherichia coli (36-83/84) MS 182-1   
                                   ││      ┌┴─ Escherichia coli (78-118/122) 2362-75 (6)  
                                   ││     ┌┴─ Escherichia coli (76-118/122) H299 (16)  
                                   ││    ┌┴──── Escherichia coli (36-78/82) 83972 (1)  
                                   └┤   ┌┴───┬─────── Escherichia coli (36-78/82) MS 146-1 (1)  
                                    │   │    └───┬─ Escherichia coli (42-84/88) SMS-3-5 (63)  
                                    │  ┌┤        └┬──── Escherichia coli (76-118/122) K12 (7)  
                                    │  ││         └──── Escherichia coli (36-78/82) MS 175-1   
                                    │  │└──────── Escherichia coli (36-78/82) ETEC H10407   
                                    └──┤   ┌──────────── Escherichia coli (51-98/99) TA271   
                                       │  ┌┴──── Escherichia coli (42-82/92) SMS-3-5 (7)  
                                       │ ┌┴──── Escherichia coli (51-92/97) SE15   
                                       │┌┴─ Escherichia coli (7-48/53) E110019   
                                       └┤      ┌──────── Escherichia coli (36-77/82) 536 (1)  
                                        └──┬───┴─ Escherichia coli (76-118/122) CFT073 (14) [2] 
                                           └┬─ Escherichia coli (76-123/124) E2348/69 (1)  
                                            └──┬─ Escherichia coli (76-123/124) 536A (24)  
                                               └┬─── Escherichia coli (51-98/99) O157:H7 str. EC869 (1)  
                                                └─── Escherichia coli (76-124/124) E110019 (4)  
  
YeeU protein (antitoxin to YeeV) (37)
hypothetical protein (9)
YafW protein (antitoxin to YkfI) (5)
YfjZ protein (antitoxin to YpjF) (4)
putative structure (3)
antitoxin of the YpjF-YfjZ toxin-antitoxin system (1)
intergenic-region protein (1)
Others (2)