┬──────────────────────────────────────────────────────────────── Escherichia coli O157:H7 str. EC4024   
└──────────────────────────────────────────────────────────────┬───── Escherichia coli MS 21-1   
                                                               └┬───── Escherichia coli 1044A (26)  
                                                                └─ Escherichia coli K12 (103)  
  

  
Chemotaxis response - phosphatase CheZ
 (4)