┌──────────────────────────────── Escherichia coli O26:H11 str. 11368   
┤                           ┌─ Escherichia coli FVEC1302 (1)  
│       ┌───────────────────┴──────────────────────────────────────── Escherichia coli ED1a (1)  
└──────┬┴─ fig|1040638.4.peg.3514 O104:H4 str. LB226692 (24)  
       └───────────────────┬─ Escherichia coli M605 (3)  
                           └───────────────────┬─ Escherichia coli O83:H1 str. NRG 857C   
                                               └──────────────────── Escherichia coli 536 (14)  
  

  
iron aquisition regulator (YbtA,AraC-like,required for transcription of FyuA/psn,Irp2)
 (6)
  
 Others 
(1)