┌─ Escherichia coli B7A (1)  
                                                                        ┌┴─ Escherichia coli MS 21-1 (1)  
                                                                       ┌┴─ Escherichia coli 042 (6)  
                                                                      ┌┴─ Escherichia coli O111:H- str. 11128   
                                                                     ┌┴─ Escherichia coli K12 (109)  
                                                                    ┌┴─ Escherichia coli 101-1   
                            ┌───────────────────────────────────────┴─ Escherichia coli B185 (1)  
                        ┌───┤     ┌─ Escherichia coli (18-426/429) E24377A   
                        │   └─────┤ ┌─ Escherichia coli (18-426/429) 2362-75 (30)  
                        │         └┬┴─ Escherichia coli (18-426/429) MS 124-1 (1)  
┌───────────────────────┤          └┬─ Escherichia coli (18-426/429) ATCC 8739 (1)  
│                       │           └─ Escherichia coli (18-426/429) K12 (86)  
│                       └──────────────────┬─ Escherichia coli (17-435/443) S88   
│                                          └┬─ Escherichia coli (17-435/443) 042 (18)  
│                                           └┬─ fig|1040638.4.peg.1693 O104:H4 (17-435/443) str. LB226692 (52)  
│                                            └┬─ Escherichia coli (17-435/443) O111:H- str. 11128   
│                                             └┬─ Escherichia coli (1-408/416) O127:H6 str. E2348/69   
│                                              └┬─ Escherichia coli (1-408/416) B088 (1)  
│                                               └┬─ Escherichia coli (17-435/443) OP50   
│                                                └─ Escherichia coli (17-435/443) K12 (53)  
│                                                   ┌─ Escherichia coli (37-437/443) E24377A (1)  
│                                                  ┌┴─ Escherichia coli (37-437/443) ATCC 8739 (1)  
┤                                                 ┌┴─ Escherichia coli (19-419/425) K12 (57)  
│                                                ┌┴─ Escherichia coli (37-437/443) HS (1)  
│                                               ┌┴┬─ Escherichia coli (37-437/443) H299   
│                                               │ └┬─ Escherichia coli (37-437/443) 1044A (24)  
│                                              ┌┤  └─ Escherichia coli (37-437/443) O55:H7 str. CB9615   
│                                             ┌┤└─ Escherichia coli (37-437/443) 2362-75 (6)  
│                                             │└┬─ Escherichia coli (37-437/443) MS 21-1   
│                            ┌────────────────┤ └─ Escherichia coli (37-437/443) 042 (25)  
│                            │                └─ Escherichia coli (37-437/443) TA143   
│                            │                        ┌─ Escherichia coli (43-432/444) CFT073 (10)  
│                            │                       ┌┴─ Escherichia coli (22-411/423) NC101   
│                            │                      ┌┴─ Escherichia coli (22-411/423) ED1a (1)  
└────────────────────────────┤                     ┌┴┬─ Escherichia coli (22-411/423) O83:H1 str. NRG 857C   
                             │                    ┌┤ └─ Escherichia coli (43-432/444) APEC O1 (6)  
                             │                    │└┬─ Escherichia coli (43-433/444) E2348/69 (2)  
                             │                   ┌┤ └┬─ Escherichia coli (22-412/423) M605 (1)  
                             │                   ││  └─ Escherichia coli (22-412/423) SE15   
                             └───────────────────┤└─ Escherichia coli (22-411/423) TA206   
                                                 │┌─ Escherichia coli (22-411/423) IAI39 (1)  
                                                 └┤┌─ Escherichia coli (22-411/423) B354 (8)  
                                                  ││  ┌─ Escherichia coli (22-411/423) FVEC1412   
                                                  └┤ ┌┴─ Escherichia coli (22-411/423) M718 (31)  
                                                   │┌┴─ Escherichia coli (22-411/423) H299   
                                                   └┤  ┌─ Escherichia coli (22-411/423) K12 (24)  
                                                    │ ┌┴─ Escherichia coli (22-411/423) B185   
                                                    └┬┴─ Escherichia coli (2-383/395) 53638 (1)  
                                                     └┬─ Escherichia coli (43-432/444) 042 (2)  
                                                      └┬─ Escherichia coli (22-411/423) 1044A (21)  
                                                       └┬─ Escherichia coli (22-411/423) 1125A   
                                                        └─ Escherichia coli (22-411/423) O157:H7 EDL933 (1)  
  
Serine transporter (44)
L-threonine transporter, anaerobically inducible (7)
Others (1)