┌─ Escherichia coli (88-316/316) E24377A (4)  
                ┌──────────────────────────────────┴────────────────── Escherichia coli (88-316/316) B171 (4)  
               ┌┴────────────────── fig|1040638.4.peg.4141 O104:H4 str. LB226692   
┌──────────────┴─ Escherichia coli (88-316/316) K12 (20)  
┤   ┌────────────────── Escherichia coli (88-316/316) E110019 (1)  
└──┬┴─────────────────────────────────── Escherichia coli (88-316/316) 1827-70 (7)  
   └─────────────────┬────────────────── Escherichia coli (88-316/316) MS 124-1 (1)  
                     └┬────────────────── Escherichia coli (88-316/316) H591   
                      └─ Escherichia coli (88-316/316) MS 119-7 (10)  
  
Phenylacetic acid degradation operon negative regulatory protein PaaX (8)
Others (1)