┌────────────────────────────────────────────────────────────── Escherichia coli (23-116/116) K12 (1)  
┤                                               ┌─ Escherichia coli IAI1 (2)  
└───────────────────────────────────────────────┤             ┌─ Escherichia coli SMS-3-5   
                                                │      ┌──────┴─ Escherichia coli MS 21-1   
                                                └──────┤┌─ Escherichia coli MS 69-1   
                                                       └┤┌─────── Escherichia coli 042  [2] 
                                                        └┤      ┌─────── Escherichia coli B185   
                                                         └──────┤ ┌─ Escherichia coli 536A (13)  
                                                                └┬┴─ Escherichia coli 1044A (28)  
                                                                 └┬─ Escherichia coli O157:H7 EDL933  [2] 
                                                                  └─────── fig|1040638.4.peg.2633 O104:H4 str. LB226692 (8)  
  

  
CRISPR-associated protein, Cas2
 (10)
  
 Others 
(1)