┌─ Escherichia coli (1-45/418) APEC O1   
┌───────────────────────────────────────────────────────────────┼─ Escherichia coli (1-45/418) E2348/69   
│                                                               └─ Escherichia coli (1-45/418) CFT073   
┤                                                           ┌─ fig|1040638.4.peg.4699 O104:H4 str. LB226692   
│                                                           │       ┌─ Escherichia coli MS 116-1   
└───────────────────────────────────────────────────────────┤   ┌───┴─ Escherichia coli MS 196-1   
                                                            │   │┌─ Escherichia coli 1212A   
                                                            │   │├─ Escherichia coli ETEC H10407   
                                                            └───┤├─ Escherichia coli MS 145-7   
                                                                │├─ Escherichia coli MS 187-1   
                                                                │├─ Escherichia coli MS 21-1   
                                                                └┼─ Escherichia coli MS 69-1   
                                                                 ├─ Escherichia coli MS 198-1   
                                                                 ├─ Escherichia coli MS 146-1   
                                                                 ├─ Escherichia coli MS 107-1   
                                                                 ├─ Escherichia coli 536A   
                                                                 └─ Escherichia coli 1125A   
  
Putrescine ABC transporter putrescine-binding protein PotF (TC 3.A.1.11.2) (16)
Others (1)