┌───────────── Escherichia coli (138-814/814) SMS-3-5   
               ┌┴────────────────────────── Escherichia coli (150-826/826) E110019 (1)  
              ┌┴─ fig|1040638.4.peg.5533 O104:H4 str. LB226692 (30)  
             ┌┴────────────┬───────────── Escherichia coli (138-814/814) 1044A (24)  
            ┌┤             └─ Escherichia coli (138-814/814) O55:H7 str. CB9615   
            │└────────────┬───────────── Escherichia coli (138-814/814) ETEC H10407   
┌───────────┤             └─ Escherichia coli (150-826/826) K12 (23)  
│           └────────────┬────────────────────────── Escherichia coli (138-814/814) MS 69-1   
│                        └┬───────────── Escherichia coli (138-814/814) B185   
│                         └─ Escherichia coli (138-814/814) M718   
┤                                                      ┌───────────── Escherichia coli (138-814/814) H299   
│                                                     ┌┴─ Escherichia coli (138-814/814) 83972 (5)  
│              ┌──────────────────────────────────────┴───────────── Escherichia coli (138-814/814) MS 45-1   
│             ┌┴───────────── Escherichia coli (138-814/814) 2362-75 (3)  
│┌────────────┴────────────────────────── Escherichia coli (138-814/814) MS 21-1   
└┤              ┌───────────── Escherichia coli (138-814/814) B354   
 │             ┌┴─ Escherichia coli (138-814/814) SE15 (1)  
 └┬────────────┴───────────── Escherichia coli (138-814/814) M605   
  └┬───────────── Escherichia coli (138-814/814) 536 (4)  
   └┬─ Escherichia coli (138-814/814) ED1a (8)  
    └┬───────────── Escherichia coli (138-814/814) MS 124-1 (1)  
     └┬───────────── Escherichia coli (150-826/826) B7A (1)  
      └┬───────────── Escherichia coli (138-814/814) TA143   
       └────────────────────────── Escherichia coli (138-814/814) APEC O1 (6)  
  

  
Acyl-CoA dehydrogenase, short-chain specific (EC 1.3.99.2)
 (14)
  
Butyryl-CoA dehydrogenase (EC 1.3.99.2)
 (7)
  
acyl-CoA dehydrogenase
 (2)
  
 Others 
(1)