┌─ Escherichia coli 536 (23)  
                              ┌──────────────────┴─────────────────── Escherichia coli 2362-75 (2)  
┌─────────────────────────────┴─ Escherichia coli H299 (2)  
┤      ┌─ Escherichia coli MS 69-1   
└──────┤                   ┌─ Escherichia coli 042 (11)  
       └──────────────────┬┴─────────────────── Escherichia coli TA280   
                          └──────────────────┬─────────────────── fig|1040638.4.peg.1363 O104:H4 str. LB226692 (4)  
                                             └┬─ Escherichia coli K12 (56)  
                                              └┬─────────────────── Escherichia coli MS 116-1 (2)  
                                               └─────────────────── Escherichia coli 1044A (24)  
  

  
5,10-methylenetetrahydrofolate reductase (EC 1.5.1.20)
 (9)
  
 Others 
(1)