ID 3.1.1.45 DE carboxymethylenebutenolidase. AN dienelactone hydrolase. AN maleylacetate enol-lactonase. CA 2-(5-oxo-2,5-dihydrofuran-2-ylidene)acetate + H2O = 4-oxohex-2-enedioate CA + H(+). DR P0A115, CLCD_PSEKB ; P0A114, CLCD_PSEPU ; O67988, CLCD_RHOOP ; DR O67802, DLHH_AQUAE ; Q43914, DLHH_AZOBR ; Q8X8L4, DLHH_ECO57 ; DR P56262, DLHH_ECOLI ; P71505, DLHH_METEA ; P95862, DLHH_SACS2 ; DR Q8Z3B8, DLHH_SALTI ; Q9L6M9, DLHH_SALTY ; P73163, DLHH_SYNY3 ; DR Q07505, DLHH_YEAST ; Q8ZAL4, DLHH_YERPE ; P27100, TCBE_PSESQ ; DR P27136, TFDE1_CUPPJ; P94136, TFDE2_CUPPJ; //