┌─ Escherichia coli 536 (22)  
            ┌──────────┴─────────── Escherichia coli H299   
 ┌──────────┴─ Escherichia coli M605   
┬┴─ Escherichia coli TA280   
└──────────┬─────────── Escherichia coli IAI39 (2)  
           └┬─ Escherichia coli (47-368/368) 042 (21)  
            └──────────┬───────────────────────────────────────────── Escherichia coli MS 146-1   
                       └┬─ Escherichia coli O157:H7 EDL933  [2] 
                        └┬─ Escherichia coli K12 (69)  
                         └─────────── Escherichia coli E22 (2)  
  

  
Phosphoserine phosphatase (EC 3.1.3.3)
 (10)