┌─── Escherichia coli (26-101/104) MS 69-1   
                           ┌┴── Escherichia coli (33-109/111) B7A (1)  
                         ┌─┴┬─ Escherichia coli (33-109/111) 83972 (2)  
┌────────────────────────┤  └── Escherichia coli (26-102/104) M605   
│                        └─ Escherichia coli (26-102/104) KO11 (2)  
│                                                   ┌──────── Escherichia coli (16-92/94) SE11   
│                                                  ┌┴──────── Escherichia coli (27-103/105) MS 115-1   
│                                                ┌─┴─┬─────── Escherichia coli (16-92/94) MS 116-1 (1)  
│                                              ┌─┤   └─────── Escherichia coli (27-103/105) K12 (7)  
│                                              │ └──┬─────── Escherichia coli (27-103/105) SMS-3-5   
┤                            ┌─────────────────┤    └─────────────┬── Escherichia coli (27-103/105) K12 (7)  
│                            │                 │                  └─ Escherichia coli (27-103/105) MS 115-1   
│              ┌─────────────┤                 └───────────────── Escherichia coli (2-67/69) MS 145-7   
│  ┌───────────┤             └─────────────────────────────── Escherichia coli (39-112/125) K12 (5)  
│  │           └───────────┬────────────────── Escherichia coli (40-115/121) KO11 (1)  
│┌─┤                       └┬────────────────── Escherichia coli (40-119/121) MS 146-1   
││ │                        └───────────── Escherichia coli (40-115/121) E22 (2)  
└┤ └────────────────── Escherichia coli (38-115/119) ATCC 8739 (1)  
 │      ┌─ Escherichia coli (41-118/125) MS 119-7   
 └──────┤     ┌─── Escherichia coli 83972 (1)  
        │    ┌┴─ Escherichia coli (1-78/84) MS 182-1   
        └────┤ ┌─── Escherichia coli (41-122/122) ETEC H10407   
             └─┤┌─── Escherichia coli (41-118/125) 042   
               ││┌── Escherichia coli (61-138/145) APEC O1 (2)  
               └┤│┌─ Escherichia coli (41-118/125) 042   
                │││         ┌─ Escherichia coli (41-120/124) E110019 (4)  
                └┤│        ┌┴─ Escherichia coli (41-118/124) 536A (24)  
                 ││   ┌────┴── Escherichia coli (16-93/99) O157:H7 str. EC869 (1)  
                 ││  ┌┴─ Escherichia coli (41-118/124) E2348/69 (1)  
                 └┤┌─┴───── Escherichia coli (60-140/141) CFT073 (1)  
                  ││      ┌─ Escherichia coli (33-113/114) MS 145-7 (16)  
                  ││    ┌─┴── Escherichia coli (16-96/97) ETEC H10407   
                  ││ ┌──┴─ Escherichia coli (41-121/122) 2362-75 (2)  
                  ││┌┴──┬─ Escherichia coli (41-121/122) TA280   
                  └┤│   └───────┬────── Escherichia coli MS 107-1   
                   ││           └─ Escherichia coli (272-352/353) B str. REL606 (1)  
                   ││      ┌─ Escherichia coli (41-121/122) APEC O1 (5)  
                   ││     ┌┴── Escherichia coli (41-121/122) H299   
                   ││  ┌──┴── Escherichia coli (41-121/122) M718   
                   ││ ┌┴──┬─ Escherichia coli (41-121/122) 042 (1)  
                   └┤ │   └─┬── Escherichia coli (1-81/82) M718 (2)  
                    │┌┤     └─ Escherichia coli (41-121/122) 2362-75 (3)  
                    ││└─ Escherichia coli (61-141/142) F11 (4)  
                    ││    ┌── Escherichia coli (41-121/122) M718   
                    ││   ┌┴── Escherichia coli (16-96/97) SE15   
                    ││  ┌┴───────── Escherichia coli (41-122/126) CFT073 (4) [2] 
                    ││┌─┴── Escherichia coli (16-91/99) TA271   
                    └┤│           ┌── Escherichia coli (71-147/154) CFT073 (4)  
                     ││         ┌─┴─ Escherichia coli (1-77/84) ABU 83972   
                     ││        ┌┴┬── Escherichia coli (41-117/124) NC101 (4)  
                     ││      ┌─┤ └─ Escherichia coli (1-77/84) ABU 83972 (2)  
                     ││     ┌┤ └── Escherichia coli (1-77/84) ED1a (1)  
                     ││    ┌┤└─ Escherichia coli (1-81/82) MS 45-1   
                     └┤    │└┬─ Escherichia coli (1-81/83) MS 200-1 (11)  
                      │   ┌┤ └─ Escherichia coli (41-121/122) F11 (1)  
                      │   │└┬───── Escherichia coli (1-77/95) O26:H11 str. 11368   
                      │  ┌┤ └─ fig|1040638.4.peg.215 O104:H4 (1-81/82) str. LB226692   
                      │  │└─┬─── Escherichia coli (1-81/82) MS 69-1   
                      │ ┌┤  └─── Escherichia coli (61-141/142) CFT073 (1)  
                      │ │└─ Escherichia coli (1-81/82) 536 (2)  
                      │ │   ┌─ Escherichia coli M718   
                      └─┤  ┌┴────── Escherichia coli (1-81/82) O103:H2 str. 12009   
                        │ ┌┴─── Escherichia coli (1-78/85) IHE3034 (2)  
                        │┌┴── Escherichia coli (1-78/85) MS 119-7   
                        ││  ┌── Escherichia coli (1-81/82) E24377A  [2] 
                        └┤ ┌┴──────── Escherichia coli (1-81/82) 536 (1)  
                         │┌┴── Escherichia coli (1-81/82) 101-1   
                         └┤┌─── Escherichia coli ETEC H10407   
                          ││   ┌── Escherichia coli (41-122/122) CFT073   
                          └┤┌──┴─ Escherichia coli 536 (11)  
                           ││    ┌── Escherichia coli (41-122/122) M605 (2)  
                           └┤   ┌┴────── Escherichia coli MS 146-1   
                            │  ┌┴─ Escherichia coli 1044A (26)  
                            └──┤ ┌── Escherichia coli (41-122/122) 042 (8)  
                               └┬┴─── Escherichia coli MS 175-1   
                                └┬─ fig|1040638.4.peg.3577 O104:H4 str. LB226692 (24)  
                                 └┬─ Escherichia coli BW2952 (5)  
                                  └── Escherichia coli (41-122/122) K12 (1)  
  
YeeU protein (antitoxin to YeeV) (42)
hypothetical protein (12)
YafW protein (antitoxin to YkfI) (10)
putative structure (6)
YfjZ protein (antitoxin to YpjF) (4)
antitoxin of the YpjF-YfjZ toxin-antitoxin system (1)
intergenic-region protein (1)
Others (2)