┌─ Escherichia coli (76-200/203) O103:H2 str. 12009   
                                              ┌┴─ Escherichia coli (76-200/203) O111:H- str. 11128   
                                             ┌┴──────────────── Escherichia coli (49-166/169) 1212A (36)  
                                     ┌───────┴──┬──── Escherichia coli (83-197/203) SE11   
┌────────────────────────────────────┤          └─── Escherichia coli (41-164/168) TA280   
│                                    └──────────────────────────┬─ Escherichia coli (41-164/168) TA271   
│                                                               └─ Escherichia coli (41-164/168) MS 119-7   
│                        ┌──────────── Escherichia coli (47-182/182) M605   
┤                      ┌─┴────────────────────────── Escherichia coli (47-176/200) B185   
│                      │                                           ┌─ Escherichia coli (46-181/182) 55989 (2)  
│                      │                                          ┌┴─ Escherichia coli (46-181/182) MS 196-1   
│                      │                                  ┌───────┴─ Escherichia coli (46-181/182) 2362-75 (3)  
│                      │                                ┌─┴─ Escherichia coli (45-182/182) E22 (2)  
└──────────────────────┤                               ┌┴─ Escherichia coli (45-182/182) APEC O1 (6)  
                       │                              ┌┴─ Escherichia coli (45-182/182) APEC O1 (2)  
                       │      ┌───────────────────────┴┬─ Escherichia coli (45-182/182) 042 (1)  
                       │      │                        └┬─ Escherichia coli (45-182/182) ABU 83972 (17)  
                       │      │                         └─ fig|6666666.5357.peg.4339 TY-2482 strain  [2] 
                       │      │                              ┌─ Escherichia coli (45-180/184) E24377A (1)  
                       └──────┤                             ┌┴─ Escherichia coli (46-176/181) 1125A (18)  
                              │                            ┌┴─ Escherichia coli (45-176/181) TA280   
                              │                           ┌┴─ Escherichia coli (45-181/181) ETEC H10407 (5)  
                              │                          ┌┴┬─ Escherichia coli (46-181/181) 1044A   
                              │                          │ └─ Escherichia coli (46-176/181) O157:H7 (3)  
                              └──────────────────────────┤ ┌──────── Escherichia coli (46-181/181) MS 115-1 (2)  
                                                         │ │ ┌────── Escherichia coli (47-181/181) CFT073 (1)  
                                                         └─┤ │     ┌─ fig|1040638.4.peg.4847 O104:H4 (47-181/181) str. LB226692 (14)  
                                                           │ │    ┌┴─ Escherichia coli (47-181/181) M718   
                                                           └─┤   ┌┴─ Escherichia coli (47-181/181) UMN026   
                                                             │  ┌┴─ Escherichia coli (9-143/143) MS 198-1   
                                                             │ ┌┴─ Escherichia coli (47-181/181) 042 (6)  
                                                             │┌┴┬─ Escherichia coli (47-181/181) MS 115-1   
                                                             └┤ └─ Escherichia coli (47-181/181) MS 21-1   
                                                              │┌─ Escherichia coli (46-181/181) O157:H7 (20)  
                                                              └┤  ┌─ Escherichia coli (47-181/181) MS 84-1   
                                                               │ ┌┴─ Escherichia coli (47-181/181) K12 (9)  
                                                               └┬┴─ Escherichia coli (46-181/181) O26:H11 str. 11368   
                                                                └┬─ Escherichia coli (47-181/181) ATCC 8739 (18)  
                                                                 └┬─ Escherichia coli (21-155/155) FVEC1302   
                                                                  └┬─ Escherichia coli (47-181/181) 101-1 (10)  
                                                                   └┬─ Escherichia coli (47-181/181) 1827-70   
                                                                    └┬─ Escherichia coli (47-181/181) O55:H7 str. CB9615   
                                                                     └┬─ Escherichia coli (47-167/191) B str. REL606 (2)  
                                                                      └─ Escherichia coli (47-180/189) K12 (7)  
  
Terminase small subunit (30)
Putative terminase small subunit (7)
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 (2)