┌─────────────────────────────────────────── Escherichia coli IAI39 (3)  
│         ┌─────────────────────────── Escherichia coli (17-416/416) 53638 (1)  
┤         │                             ┌─ Escherichia coli (17-416/416) 042 (9)  
│         │  ┌──────────────────────────┴─────────────────────────── Escherichia coli H299   
└─────────┤ ┌┴─ Escherichia coli K12 (14)  
          │┌┴─────────────────────────┬─────────────────────────── Escherichia coli O55:H7 str. CB9615   
          ││                          └─ Escherichia coli 1044A (23)  
          └┤                            ┌─────────────────────────── Escherichia coli MS 124-1 (1)  
           │                           ┌┴─ fig|1040638.4.peg.4785 O104:H4 str. LB226692 (36)  
           │┌──────────────────────────┴────────────────────────── Escherichia coli (17-416/416) B171 (4)  
           └┤                          ┌─────────────────────────── Escherichia coli M605   
            └─────────────────────────┬┴────────────────────────── Escherichia coli SE15   
                                      └┬─────────────────────────── Escherichia coli 2362-75 (8)  
                                       └─ Escherichia coli APEC O1 (15)  
  
Nicotinate phosphoribosyltransferase (EC 2.4.2.11) (13)
Others (1)