| 1. Short-chain acyl-CoA dehydrogenase (SCAD) |
| 2. Medium-chain acyl-CoA dehydrogenase (MCAD) |
| 3. Long-chain acyl-CoA dehydrogenase (LCAD) |
| 4. Very long-chain acyl-CoA dehydrogenase (VLCAD) |
| 5. Enoyl-CoA hydratase (crotonase) |
| 6. Long-chain enoyl-CoA hydratase |
| 7. Short-chain L-3-hydroxyacyl-CoA dehydrogenase (SCHAD) |
| 8. Long-chain L-3-hydroxyacyl-CoA dehydrogenase (LCHAD) |
| 9. Acetyoacetyl-CoA thiolase |
| 10. Long-chain 3-ketoacyl-CoA thiolase |
| 11. Trifunctional enzyme (combines activities of 6, 8, and 10) |
