┌─────────────────── Escherichia coli 536 (6)  
                             ┌┴─────────────────── Escherichia coli TA206   
                            ┌┴─ Escherichia coli 83972 (16)  
         ┌──────────────────┴─────────────────── Escherichia coli M605 (1)  
        ┌┴─ Escherichia coli SMS-3-5   
┌───────┴────────────────────────────────────── Escherichia coli H299   
┤          ┌─ Escherichia coli MS 21-1   
└──────────┤                                     ┌─ Escherichia coli 101-1 (9)  
           └──────────────────┬──────────────────┴─────────────────── Escherichia coli (3-356/356) 53638 (1)  
                              └┬─ Escherichia coli (3-356/356) K12 (74)  
                               └┬─────────────────── Escherichia coli (3-356/356) E22 (2)  
                                └┬─────────────────── Escherichia coli DH1   
                                 └─────────────────── Escherichia coli MS 78-1   
  

  
Probable L-ascorbate-6-phosphate lactonase UlaG (EC 3.1.1.-) (L-ascorbate utilization protein G)
 (13)