┌─ Escherichia coli 2362-75 (10)  
                                ┌─────────────┴────────────── Escherichia coli S88   
                   ┌────────────┴─ Escherichia coli 536 (7)  
                 ┌─┴───────────── Escherichia coli MS 21-1 (1)  
┌────────────────┴─ Escherichia coli IAI39 (1)  
│                            ┌────────────── Escherichia coli M605   
│                           ┌┴────────────── Escherichia coli NC101   
│                          ┌┴─ Escherichia coli SE15   
┤            ┌─────────────┴──────────────────────────── Escherichia coli H299   
│           ┌┴────────────── Escherichia coli MS 115-1   
│          ┌┴─ Escherichia coli 83972 (3)  
│          │                            ┌─ Escherichia coli (1-282/283) 042 (6)  
└──────────┤              ┌─────────────┴──────────────────────────── Escherichia coli (1-282/283) B354   
           │┌─────────────┴─ Escherichia coli TA280   
           └┤             ┌────────────── Escherichia coli B185   
            └─────────────┤┌─ Escherichia coli 1044A (26)  
                          └┤             ┌────────────── Escherichia coli ETEC H10407   
                           └─────────────┤┌────────────── Escherichia coli MS 107-1   
                                         └┤┌─ Escherichia coli K12 (43)  
                                          └┤ ┌────────────── Escherichia coli 101-1 (6)  
                                           └┬┴────────────── Escherichia coli O111:H- str. 11128   
                                            └┬────────────── Escherichia coli E110019 (1)  
                                             └┬────────────── Escherichia coli MS 116-1 (2)  
                                              └────────────── Escherichia coli O26:H11 str. 11368   
  
Pantoate--beta-alanine ligase (EC 6.3.2.1) (24)