5.5.1.1	Muconate cycloisomerase	-	
5.5.1.10	alpha-pinene-oxide decyclase	-	
5.5.1.11	dichloromuconate cycloisomerase	-	
5.5.1.12	copalyl diphosphate synthase	-	
5.5.1.13	ent-copalyl diphosphate synthase	-	
5.5.1.14	syn-copalyl-diphosphate synthase	-	
5.5.1.15	terpentedienyl-diphosphate synthase	-	
5.5.1.16	halimadienyl-diphosphate synthase	-	
5.5.1.17	(S)-beta-macrocarpene synthase	-	
5.5.1.18	lycopene epsilon-cyclase	-	
5.5.1.19	lycopene beta-cyclase	-	
5.5.1.2	3-carboxy-cis,cis-muconate cycloisomerase	-	
5.5.1.20	prosolanapyrone-III cycloisomerase	-	
5.5.1.21	copal-8-ol diphosphate synthase	deleted. The enzyme had been misclassified 	
5.5.1.22	(-)-bornyl diphosphate synthase	-	
5.5.1.23	aklanonic acid methyl ester cyclase	-	
5.5.1.24	tocopherol cyclase	-	
5.5.1.25	3,6-anhydro-L-galactonate cycloisomerase	-	
5.5.1.26	nogalonic acid methyl ester cyclase	-	
5.5.1.27	D-galactarolactone cycloisomerase	-	
5.5.1.28	(-)-kolavenyl diphosphate synthase	-	
5.5.1.29	(+)-kolavenyl diphosphate synthase	-	
5.5.1.3	Tetrahydroxypteridine cycloisomerase	-	
5.5.1.30	labda-7,13-dienyl diphosphate synthase	-	
5.5.1.31	hapalindole H synthase	-	
5.5.1.32	12-epi-hapalindole U synthase	-	
5.5.1.33	12-epi-fischerindole U synthase	-	
5.5.1.34	(+)-cis,trans-nepetalactol synthase	-	
5.5.1.35	(+)-cis,cis-nepetalactol synthase	-	
5.5.1.4	inositol-3-phosphate synthase	-	
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