5.5.1.5	Carboxy-cis,cis-muconate cyclase	-	
5.5.1.6	chalcone isomerase	-	
5.5.1.7	Chloromuconate cycloisomerase	-	
5.5.1.8	(+)-bornyl diphosphate synthase	-	
5.5.1.9	Cycloeucalenol cycloisomerase	-	
5.5.1.B6	nogalonic acid methyl ester cyclase	preliminary BRENDA-supplied EC number	
5.5.1.B7	clerodienyl diphosphate synthase	preliminary BRENDA-supplied EC number