┌─ Escherichia coli M605   
                                                                  ┌┴─ Escherichia coli K12 (131)  
┌─────────────────────────────────────────────────────────────────┴─ Escherichia coli MS 196-1   
┤                                                                 ┌─ Escherichia coli B088   
└─────────────────────────────────────────────────────────────────┤ ┌─ Escherichia coli (3-144/144) K12 (128)  
                                                                  └┬┴─ Escherichia coli (1-138/139) MS 21-1   
                                                                   └┬─ Escherichia coli IAI39 (1)  
                                                                    └─ Escherichia coli 2362-75   
  

  
16 kDa heat shock protein B
 (4)
  
16 kDa heat shock protein A
 (4)