┌─ Escherichia coli (13-731/731) O127:H6 str. E2348/69   
                                                 ┌┴─ Escherichia coli (18-705/705) E2348/69   
                                                ┌┴─ Escherichia coli (13-731/731) M718   
┌───────────────────────────────────────────────┴─ Escherichia coli (13-731/731) 2362-75   
│                                                    ┌─ Escherichia coli (3-641/641) SMS-3-5   
│                                                   ┌┴─ Escherichia coli (3-641/641) 83972 (9)  
│                                                  ┌┴─ Escherichia coli (3-641/641) MS 45-1   
│                                                 ┌┴─ Escherichia coli (7-650/650) WV_060327   
│                                                ┌┴─ Escherichia coli (7-650/650) M605   
│                                               ┌┴┬─ Escherichia coli (41-690/690) APEC O1 (1)  
│                                               │ └┬─ Escherichia coli (14-663/663) F11  [2] 
│                                              ┌┤  └─ Escherichia coli (3-641/641) 536 (1)  
│                                              │└┬─ Escherichia coli (7-650/650) 2362-75   
│                                              │ └─ Escherichia coli (79-728/728) E2348/69   
│                                             ┌┤ ┌─ Escherichia coli (3-641/641) IAI1 (1)  
│                                             ││┌┴─ Escherichia coli (7-650/650) E110019 (1)  
│                                             │└┤ ┌─ Escherichia coli (14-663/663) K12 (4)  
│                                             │ └┬┴─ Escherichia coli (14-663/663) B171  [2] 
│                                            ┌┤  └┬─ fig|6666666.5357.peg.502 TY-2482 (14-663/663) strain   
│                                            ││   └┬─ Escherichia coli (14-663/663) B7A (1)  
│                                            ││    └┬─ Escherichia coli (7-650/650) MS 145-7   
│                                            ││     └─ Escherichia coli (3-641/641) B7A (3)  
│                                           ┌┤└┬─ Escherichia coli (3-641/641) B str. REL606 (1)  
│                                           ││ └┬─ Escherichia coli (3-641/641) 1827-70 (16)  
│                                           ││  └┬─ Escherichia coli (3-641/641) TA280   
│                                          ┌┤│   └─ Escherichia coli (14-663/663) E22  [2] 
│                                          ││└─ Escherichia coli (79-728/728) 042   
│                                          │└┬─ Escherichia coli (14-663/663) 53638   
┤                                         ┌┤ └┬─ Escherichia coli (7-650/650) 53638   
│                                         ││  └┬─ Escherichia coli (3-641/641) MS 124-1 (1)  
│                                        ┌┤│   └─ Escherichia coli (3-641/641) MS 21-1   
│                                        ││└─ Escherichia coli (14-659/659) O157:H7 EDL933   
│                                       ┌┤└─ Escherichia coli (14-659/659) O157:H7   
│                                      ┌┤└─ Escherichia coli (3-637/637) 536A   
│                        ┌─────────────┤└─ Escherichia coli (3-637/637) TA143   
│                        │             └─ Escherichia coli (3-637/637) FVEC1412 (2)  
│                   ┌────┤                                ┌─ Escherichia coli (7-671/696) E110019 (4)  
│                   │    │                               ┌┴─ Escherichia coli (7-671/696) CFT073   
│                   │    └─────┬─────────────────────────┴─ Escherichia coli (7-671/696) ABU 83972   
│                   │          └───────────────────┬─ Escherichia coli (15-674/682) ED1a (1)  
│      ┌────────────┤                              └┬─ Escherichia coli (15-674/682) H299 (3)  
│      │            │                               └┬─ Escherichia coli (15-674/682) CFT073 (2)  
│      │            │                                └─ Escherichia coli (15-674/682) APEC O1 (2)  
│      │            └─────────────────────┬───────────── Escherichia coli (42-756/771) 536 (6)  
│      │                                  └─────────┬─ Escherichia coli (27-720/720) S88   
│      │                                            └┬─ Escherichia coli (27-725/725) APEC O1 (6)  
│      │                                             └┬─ Escherichia coli (27-722/722) MS 124-1 (1)  
│      │                                              └┬─ Escherichia coli (27-725/725) H299   
│      │                                               └┬─ Escherichia coli (19-725/725) CFT073 (3)  
│      │                                                └┬─ Escherichia coli (19-725/725) IHE3034 (1)  
│      │                                                 └─ Escherichia coli (19-725/725) 536 (4)  
│      │                                                                   ┌─ Escherichia coli (10-663/663) CFT073 (1)  
│      │                                                                  ┌┴─ Escherichia coli (3-656/656) 83972 (4)  
│      │                                                                 ┌┴─ Escherichia coli (3-656/656) ED1a (1)  
└──────┤                                                                ┌┴─ Escherichia coli (3-656/656) O83:H1 str. NRG 857C   
       │                                                               ┌┴┬─ Escherichia coli (3-656/656) IAI39 (3)  
       │                                                               │ └─ Escherichia coli (3-656/656) 2362-75 (2)  
       │                                                              ┌┤ ┌─ Escherichia coli (3-656/656) MS 21-1   
       │                                                              │└┬┴─ Escherichia coli (3-656/656) FVEC1302 (2)  
       │                                                             ┌┤ └┬─ Escherichia coli (3-656/656) SMS-3-5   
       │                                                             ││  └─ Escherichia coli (3-656/656) B354 (1)  
       │                                                            ┌┤└─ Escherichia coli (3-656/656) MS 69-1   
       │                                                            │└─ Escherichia coli (10-663/663) 042 (1)  
       │    ┌───────────────────────────────────────────────────────┤┌─ Escherichia coli (3-656/656) TA143   
       │    │                                                       └┤ ┌─ Escherichia coli (3-656/656) B185   
       │    │                                                        └┬┴─ Escherichia coli (3-656/656) M718   
       │    │                                                         └┬─ Escherichia coli (3-656/656) O55:H7 str. CB9615   
       │    │                                                          └┬─ Escherichia coli (3-656/656) O157:H7 EDL933 (1)  
       │    │                                                           └─ Escherichia coli (3-656/656) 1044A (8)  
       └────┤                                    ┌─ Escherichia coli (16-642/642) E2348/69 (1)  
            │                                ┌───┴─ Escherichia coli 2362-75 (1)  
            │                       ┌────────┴───┬─ Escherichia coli ED1a (1)  
            │                       │            └─ Escherichia coli B354   
            │                       │      ┌──── Escherichia coli H299   
            │                       │      │         ┌─ Escherichia coli 536 (2)  
            └───────────────────────┤      │        ┌┴─ Escherichia coli F11 (1)  
                                    │      │       ┌┴┬─ Escherichia coli 83972 (5)  
                                    │      │      ┌┤ └─ Escherichia coli (16-629/629) CFT073 (1)  
                                    │      │      │└┬─ Escherichia coli (16-629/629) APEC O1 (5)  
                                    │      │     ┌┤ └┬─ Escherichia coli WV_060327   
                                    └──────┤     ││  └─ Escherichia coli TA206   
                                           │    ┌┤└─ Escherichia coli M605   
                                           │   ┌┤└─ Escherichia coli SE15   
                                           │   │└┬─ Escherichia coli O55:H7 str. CB9615   
                                           │  ┌┤ └┬─ Escherichia coli O157:H7 str. EC4401 (1)  
                                           │  ││  └─ Escherichia coli 1044A (22)  
                                           │ ┌┤└─ Escherichia coli TA280   
                                           └─┤└─ Escherichia coli MS 69-1   
                                             │┌─ Escherichia coli SMS-3-5   
                                             └┤┌─ Escherichia coli (16-629/629) 042 (6)  
                                              └┤┌─ Escherichia coli IAI39 (1)  
                                               ││   ┌─ Escherichia coli B185   
                                               └┤  ┌┴─ Escherichia coli BW2952   
                                                │ ┌┴─ Escherichia coli ETEC H10407   
                                                │┌┴─ Escherichia coli K12 (22)  
                                                └┤┌─ Escherichia coli MS 175-1   
                                                 └┤┌─ Escherichia coli B str. REL606   
                                                  └┤ ┌─ Escherichia coli B088   
                                                   │┌┴─ Escherichia coli B7A (2)  
                                                   └┤┌─ Escherichia coli 53638 (1)  
                                                    └┤ ┌─ fig|1040638.4.peg.1001 O104:H4 str. LB226692 (5)  
                                                     └┬┴─ Escherichia coli O111:H- str. 11128   
                                                      └┬─ Escherichia coli E24377A (1)  
                                                       └┬─ Escherichia coli B171 (12)  
                                                        └┬─ Escherichia coli EC4100B   
                                                         └─ Escherichia coli MS 124-1 (1)  
  
Outer membrane vitamin B12 receptor BtuB (36)
Colicin I receptor precursor (32)
Putative TonB dependent outer membrane receptor (18)
Outer Membrane Siderophore Receptor IroN (7)
TonB-dependent receptor; Outer membrane receptor for ferrienterochelin and colicins (6)
Ferric hydroxamate outer membrane receptor FhuA (4)
putative membrane; Cell envelop: Outer membrane constituents (1)
Others (2)