┌────────── Escherichia coli ED1a (1)  
┤    ┌─ Escherichia coli K12 (118)  
└────┤ ┌────────────────────────────── Escherichia coli IAI39 (1)  
     └┬┴─────────────── Escherichia coli MS 69-1   
      └┬─────────────── Escherichia coli O83:H1 str. NRG 857C   
       └┬─────────────── Escherichia coli 2362-75 (2)  
        └─────────────────────────────────────────────┬─────────────── Escherichia coli CFT073 (2)  
                                                      └─ Escherichia coli 83972 (2)  
  

  
rRNA small subunit methyltransferase H
 (5)
  
rRNA small subunit methyltransferase H # 16S rRNA m(4) C1402 methyltransferase
 (3)