┌─ Escherichia coli K12 (112)  
                                                                     ┌┴─ Escherichia coli (1-623/1004) O157:H7 str. EC4042   
                                                                    ┌┴┬─ Escherichia coli MS 107-1   
┌───────────────────────────────────────────────────────────────────┤ └─ Escherichia coli E24377A (1)  
┤                                                                   └─ Escherichia coli O157:H7 EDL933   
│                                                                  ┌─ Escherichia coli (15-574/588) ED1a (1)  
└──────────────────────────────────────────────────────────────────┤ ┌─ Escherichia coli (15-574/588) 83972 (4)  
                                                                   │┌┴─ Escherichia coli (15-574/588) 2362-75 (18)  
                                                                   └┤┌─ Escherichia coli (15-574/588) 042 (7)  
                                                                    └┤ ┌─ Escherichia coli (15-574/588) H299 (4)  
                                                                     └┬┴─ Escherichia coli (15-574/588) MS 69-1 (1)  
                                                                      └┬─ Escherichia coli (15-574/588) K12 (81)  
                                                                       └┬─ Escherichia coli (15-574/588) MS 115-1   
                                                                        └┬─ Escherichia coli (15-574/588) O55:H7 str. CB9615   
                                                                         └┬─ Escherichia coli (15-574/588) E110019 (1)  
                                                                          └─ Escherichia coli (15-574/588) MS 116-1 (1)  
  
Cell division protein FtsI [Peptidoglycan synthetase] (EC 2.4.1.129) (11)
Penicillin-binding protein 2 (PBP-2) (5)