┌──────────────────────────────────────────────────────────────────── Escherichia coli (2-441/453) TA280   
┤                                                                  ┌─ Escherichia coli E110019 (1)  
└──────────────────────────────────────────────────────────────────┤┌─ Escherichia coli B7A (10)  
                                                                   └┤┌─ Escherichia coli O157:H7 EDL933  [2] 
                                                                    └┤ ┌─ Escherichia coli K12 (7)  
                                                                     └┬┴─ Escherichia coli ED1a (1)  
                                                                      └┬─ Escherichia coli TA143   
                                                                       └─ fig|1040638.4.peg.3006 O104:H4 str. LB226692 (104)  
  

  
ATP-dependent RNA helicase SrmB
 (6)
  
ATP-dependent RNA helicase RhlE
 (1)
  
 Others 
(1)