┌─ Escherichia coli K12 (112)  
                   ┌───────────────────────┴───────────────────────── Escherichia coli O55:H7 str. CB9615   
┬──────────────────┴──────────────────────── Escherichia coli IAI39 (2)  
└────┬─ Escherichia coli TA143   
     └───────────────────────┬─ Escherichia coli H299 (2)  
                             └┬──────────────────────── Escherichia coli MS 21-1   
                              └──────────────────────── Escherichia coli 042 (6)  
  

  
rRNA small subunit methyltransferase, glucose inhibited division protein GidB
 (7)