ID 5.5.1.2 DE 3-carboxy-cis,cis-muconate cycloisomerase. AN 3-carboxymuconate lactonizing enzyme. AN beta-carboxymuconate lactonizing enzyme. AN CMLE. CA 2-(carboxymethyl)-5-oxo-2,5-dihydro-2-furoate = 3-carboxy-cis,cis- CA muconate + H(+). DR Q59092, PCAB_ACIAD ; O31385, PCAB_BRADU ; Q9I6Q8, PCAB_PSEAE ; DR P32427, PCAB_PSEPU ; //