┌─ Escherichia coli (40-201/203) O103:H2 str. 12009   
                                                          ┌─┴─ Escherichia coli (40-201/203) O111:H- str. 11128   
                                                         ┌┴─ Escherichia coli (40-201/203) TA143   
                                                        ┌┴─ Escherichia coli (40-201/203) MS 196-1   
                                                       ┌┴── Escherichia coli (5-166/168) TA280   
                                                    ┌──┴─ Escherichia coli (40-201/203) SE11   
                     ┌──────────────────────────────┴──────────────┬─ Escherichia coli (5-162/168) TA271   
                     │                                             └─ Escherichia coli (5-162/168) MS 119-7   
┌────────────────────┤             ┌─── Escherichia coli (6-166/180) E110019   
│                    └────────────┬┴────── Escherichia coli (6-167/180) MS 124-1 (1)  
│                                 └─┬── Escherichia coli (6-166/180) TA143   
│                                   └──┬─ Escherichia coli (1-161/175) IHE3034 (1)  
┤                                      └┬─ Escherichia coli (6-166/180) O157:H7 str. EC4042 (16)  
│                                       └┬─ Escherichia coli (1-161/175) O103:H2 str. 12009   
│                                        └─ Escherichia coli (6-166/180) O26:H11 str. 11368   
│     ┌──────── Escherichia coli (1-180/200) B185   
│     │       ┌───── Escherichia coli (1-180/182) M605   
└─────┤       │                        ┌─ Escherichia coli (1-181/182) ABU 83972 (5)  
      │       │                       ┌┴─ Escherichia coli (1-181/182) 042   
      │       │                      ┌┴─ Escherichia coli (1-181/182) APEC O1   
      └───────┤                    ┌─┴─ Escherichia coli (1-181/182) APEC O1 (1)  
              │                   ┌┴─ Escherichia coli (1-181/182) E22   
              │        ┌──────────┴──────┬─ Escherichia coli (1-181/182) 2362-75 (3)  
              │        │                 └┬─ Escherichia coli (1-181/182) MS 196-1   
              │        │                  └─ Escherichia coli (1-181/182) 55989 (2)  
              └────────┤             ┌─ Escherichia coli 536 (3)  
                       │             │  ┌─ Escherichia coli 101-1   
                       │             │ ┌┴─ Escherichia coli (1-180/181) TA280   
                       └─────────────┤┌┴┬─ Escherichia coli (1-183/184) E24377A (1)  
                                     ││ └─ Escherichia coli ETEC H10407   
                                     ││   ┌─ Escherichia coli (1-180/181) 1125A (17)  
                                     └┤  ┌┴─ Escherichia coli (1-180/181) O157:H7 (3)  
                                      │ ┌┴─ Escherichia coli (4-167/168) O26:H11 str. 11368   
                                      │┌┴─ Escherichia coli 1044A   
                                      └┤       ┌────── Escherichia coli MS 115-1 (2)  
                                       │       │ ┌─── Escherichia coli CFT073 (1)  
                                       └───────┤ │    ┌─ fig|1040638.4.peg.4847 O104:H4 str. LB226692 (14)  
                                               │ │   ┌┴─ Escherichia coli M718   
                                               └─┤  ┌┴─ Escherichia coli UMN026   
                                                 │ ┌┴┬─ Escherichia coli MS 115-1   
                                                 │┌┤ └─ Escherichia coli MS 21-1   
                                                 ││└─ Escherichia coli 042 (5)  
                                                 └┤┌─ Escherichia coli ATCC 8739 (16)  
                                                  ││  ┌─ Escherichia coli K12 (9)  
                                                  └┤ ┌┴─ Escherichia coli MS 84-1   
                                                   │┌┴─ Escherichia coli M605   
                                                   └┤ ┌─ Escherichia coli O26:H11 str. 11368   
                                                    │┌┴─ Escherichia coli O157:H7 (20)  
                                                    └┤┌─ Escherichia coli MS 182-1   
                                                     └┤┌─ Escherichia coli MS 78-1   
                                                      └┤ ┌─ Escherichia coli 1827-70   
                                                       └┬┴─ Escherichia coli O55:H7 str. CB9615   
                                                        └┬─ Escherichia coli 101-1 (9)  
                                                         └┬─ Escherichia coli (1-170/191) B str. REL606 (2)  
                                                          └─ Escherichia coli (1-176/189) K12 (7)  
  
Terminase small subunit (34)
Putative terminase small subunit (11)
phage DNA packaging protein NU1-like protein (4)
P21 prophage-derived terminase small subunit (1)
terminase small subunit (1)
IS, phage, Tn; Phage-related functions and prophages (1)
bacteriophage DNA packaging protein (1)
putative terminase small subunit (1)
Others (1)