1.1.1.17	mannitol-1-phosphate 5-dehydrogenase	mannitol cycle	-	
1.1.1.67	mannitol 2-dehydrogenase	mannitol cycle	-	
2.7.1.4	fructokinase	mannitol cycle	-	
3.1.3.22	mannitol-1-phosphatase	mannitol cycle	-