1.13.11.3	protocatechuate 3,4-dioxygenase	protocatechuate degradation II (ortho-cleavage pathway)	-	
3.1.1.24	3-oxoadipate enol-lactonase	protocatechuate degradation II (ortho-cleavage pathway)	-	
4.1.1.44	4-carboxymuconolactone decarboxylase	protocatechuate degradation II (ortho-cleavage pathway)	-	
5.5.1.2	3-carboxy-cis,cis-muconate cycloisomerase	protocatechuate degradation II (ortho-cleavage pathway)	-