┌─ Escherichia coli 2362-75 (8)  
                                        ┌─────────────┴────────────── Escherichia coli 536 (1)  
                                       ┌┴───────────────────────────── Escherichia coli IAI39 (1)  
                                      ┌┴─────────────┬─────────────── Escherichia coli M718   
                        ┌─────────────┤              └────────────── Escherichia coli B185   
                       ┌┤             └────────────── Escherichia coli M605 (1)  
         ┌─────────────┤└─ Escherichia coli K12 (58)  
         │             └┬─────────────── Escherichia coli (1-265/269) 101-1 (5)  
┌────────┤              └─ Escherichia coli (1-265/269) ATCC 8739 (1)  
┤        └──────────────┬────────────── Escherichia coli TA206   
│                       └─ Escherichia coli APEC O1 (10)  
└─────┬─────────────────────────────── Escherichia coli 1044A (24)  
      └┬────────────── Escherichia coli B354   
       └┬────────────── Escherichia coli MS 69-1   
        └┬─ Escherichia coli FVEC1302 (3)  
         └─────────────┬─ Escherichia coli 042 (1)  
                       └─ Escherichia coli TA143 (1)  
  

  
ATP:Cob(I)alamin adenosyltransferase (EC 2.5.1.17), ethanolamine utilization
 (17)