┌──────────────────── Escherichia coli (1-163/164) ED1a (1)  
│                                                                    ┌─ Escherichia coli (10-151/157) MS 69-1   
┤                                                                   ┌┴─ Escherichia coli (10-151/157) H591   
│┌──────────────────────────────────────────────────────────────────┴─ Escherichia coli (42-183/189) 53638 (1)  
└┤            ┌─ Escherichia coli (4-167/167) E22 (1)  
 └────────────┤┌─ Escherichia coli ETEC H10407   
              └┤┌─ Escherichia coli O55:H7 str. CB9615   
               └┤┌─ Escherichia coli (4-167/167) E110019 (5)  
                └┤┌─ Escherichia coli 55989 (1)  
                 ││  ┌─ Escherichia coli B171   
                 └┤ ┌┴─ Escherichia coli MS 182-1   
                  │┌┴─ Escherichia coli TA206   
                  └┤ ┌─ Escherichia coli O26:H11 str. 11368   
                   └┬┴─ Escherichia coli H299   
                    └┬─ Escherichia coli (4-167/167) B171 (13)  
                     └┬─ Escherichia coli MS 198-1 (1)  
                      └─ Escherichia coli (4-167/167) B7A (1)  
  

  
Head completion/stabilization protein
 (14)
  
Phage head completion-stabilization protein
 (3)