1.2.3.7	indole-3-acetaldehyde oxidase	L-tryptophan degradation VI (via tryptamine)	-	-	PWY-3181	
1.4.3.4	monoamine oxidase	L-tryptophan degradation VI (via tryptamine)	-	-	PWY-3181	
4.1.1.28	aromatic-L-amino-acid decarboxylase	L-tryptophan degradation VI (via tryptamine)	-	-	PWY-3181	
4.1.1.105	L-tryptophan decarboxylase	L-tryptophan degradation VI (via tryptamine)	-	-	PWY-3181