┌─ Escherichia coli (1-303/305) 53638 (1)  
                                                          ┌─┴── Escherichia coli (1-303/305) HS (1)  
                                                         ┌┴─ Escherichia coli (1-303/305) 1827-70 (3)  
┌────────────────────────────────────────────────────────┴─┬── Escherichia coli (1-303/305) MS 196-1   
┤                                                          └─ Escherichia coli (1-303/305) K12 (8)  
│                                                     ┌── Escherichia coli (1-306/307) MS 69-1   
└─────────────────────────────────────────────────────┤┌─ Escherichia coli (1-306/307) 042 (3)  
                                                      ││        ┌── Escherichia coli (1-305/307) SMS-3-5   
                                                      └┤   ┌────┴─────── Escherichia coli (1-305/307) MS 21-1   
                                                       │  ┌┴─ Escherichia coli (1-306/307) IAI1 (2)  
                                                       │┌─┴─────── Escherichia coli SE11   
                                                       └┤ ┌─ Escherichia coli (1-306/307) MS 115-1 (2)  
                                                        └─┤ ┌── fig|1040638.4.peg.2634 O104:H4 str. LB226692 (8)  
                                                          └┬┴── Escherichia coli E110019 (3)  
                                                           └┬── Escherichia coli B171 (11)  
                                                            └─┬───── Escherichia coli (1-306/307) M718   
                                                              └┬── Escherichia coli (1-306/307) O55:H7 str. CB9615   
                                                               └┬── Escherichia coli (1-306/307) H591 (1)  
                                                                └─┬── Escherichia coli (1-306/307) 1125A   
                                                                  └─ Escherichia coli (1-306/307) 1044A (23)  
  
CRISPR-associated protein Cas1 (19)
Others (1)