1.2.1.3	aldehyde dehydrogenase (NAD+)	putrescine degradation III	-	
1.4.3.4	monoamine oxidase	putrescine degradation III	-	
2.3.1.57	diamine N-acetyltransferase	putrescine degradation III	-	
3.5.1.63	4-acetamidobutyrate deacetylase	putrescine degradation III	-