┬───────────────────────────────────────── Escherichia coli (22-87/316) K12 (53)  
└─────────────┬─ Escherichia coli (1-66/295) SE11   
              └────────────────────────────────────────────────────── fig|1040638.4.peg.4140 O104:H4 str. LB226692   
  

  
Phenylacetic acid degradation operon negative regulatory protein PaaX
 (2)
  
 Others 
(1)