1.1.1.1	alcohol dehydrogenase	buccal mucosa	isozyme ADH4	
1.2.1.3	aldehyde dehydrogenase (NAD+)	buccal mucosa	-	
1.2.1.5	aldehyde dehydrogenase [NAD(P)+]	buccal mucosa	-	
1.3.1.1	dihydropyrimidine dehydrogenase (NAD+)	buccal mucosa	-	
1.5.1.20	methylenetetrahydrofolate reductase [NAD(P)H]	buccal mucosa	-