┌─ Escherichia coli B7A   
                                                                       ┌┴─ Escherichia coli MS 145-7   
                                                                      ┌┴─ Escherichia coli MS 198-1   
                                                                     ┌┴┬─ Escherichia coli E22   
                                                                    ┌┤ └─ Escherichia coli EC4100B   
                                                                    │└┬─ Escherichia coli ABU 83972 (9)  
                                                                   ┌┤ └┬─ Escherichia coli MS 124-1 (1)  
                                                                   ││  └─ Escherichia coli B171   
                                                                  ┌┤└─ Escherichia coli K12 (26)  
                                                                  │└┬─ Escherichia coli M718   
                                                                 ┌┤ └─ Escherichia coli MS 21-1   
                 ┌───────────────────────────────────────────────┤└─ Escherichia coli O157:H7 EDL933   
                 │                                               └─ Escherichia coli 1044A (4)  
                 │                                                 ┌─ Escherichia coli ATCC 8739 (3)  
┌────────────────┤                                                ┌┴─ Escherichia coli B171 (1)  
│                │                                               ┌┴┬─ Escherichia coli MS 182-1   
│                └───────────────────────────────────────────────┤ └─ fig|1040638.4.peg.2693 O104:H4 str. LB226692 (34)  
│                                                                │┌─ Escherichia coli B354   
│                                                                └┤ ┌─ Escherichia coli 1044A (25)  
┤                                                                 └┬┴─ Escherichia coli 042 (2)  
│                                                                  └┬─ Escherichia coli 2362-75 (39)  
│                                                                   └┬─ Escherichia coli H736 (1)  
│                                                                    └─ Escherichia coli K12 (8)  
│                                                               ┌─ Escherichia coli (3-454/456) MS 145-7   
└───────────────────────────────────────────────────────────────┤┌─ fig|6666666.5357.peg.3956 TY-2482 (1-452/454) strain (35)  
                                                                └┤┌─ Escherichia coli (1-452/454) SE11   
                                                                 └┤┌── Escherichia coli (3-449/449) MS 69-1   
                                                                  └┤┌─ Escherichia coli (3-454/456) H299 (1)  
                                                                   └┤ ┌─ Escherichia coli (3-454/456) 101-1 (13)  
                                                                    │┌┴─ Escherichia coli (1-452/454) M718 (1)  
                                                                    └┤  ┌─ Escherichia coli (1-452/454) TA206 (1)  
                                                                     │ ┌┴─ Escherichia coli (3-454/456) WV_060327 (1)  
                                                                     └┬┴─ Escherichia coli (1-452/454) APEC O1 (4)  
                                                                      └┬─ Escherichia coli (3-454/456) ABU 83972 (1)  
                                                                       └┬─ Escherichia coli (3-454/456) E2348/69   
                                                                        └┬─ Escherichia coli (3-454/456) 1044A (9)  
                                                                         └─ Escherichia coli (1-452/454) 1125A (13)  
  
Predicted L-serine dehydratase (EC 4.3.1.17) TdcG (13)
L-serine dehydratase 1 (EC 4.3.1.17) (12)
L-serine dehydratase (EC 4.3.1.17) (9)
L-serine deaminase (1)
Others (2)