1.13.11.1	catechol 1,2-dioxygenase	catechol degradation to beta-ketoadipate	-	
3.1.1.24	3-oxoadipate enol-lactonase	catechol degradation to beta-ketoadipate	-	
5.3.3.4	muconolactone DELTA-isomerase	catechol degradation to beta-ketoadipate	-	
5.5.1.1	Muconate cycloisomerase	catechol degradation to beta-ketoadipate	-