1.1.1.30	3-hydroxybutyrate dehydrogenase	ketolysis	
2.3.1.9	acetyl-CoA C-acetyltransferase	ketolysis	
2.3.1.16	acetyl-CoA C-acyltransferase	ketolysis	
2.8.3.5	3-oxoacid CoA-transferase	ketolysis