EC 3.1.1.45     
Accepted name: carboxymethylenebutenolidase
Reaction: 4-carboxymethylenebut-2-en-4-olide + H2O = 4-oxohex-2-enedioate
Other name(s): maleylacetate enol-lactonase; dienelactone hydrolase; carboxymethylene butenolide hydrolase
Systematic name: 4-carboxymethylenebut-2-en-4-olide lactonohydrolase
References:
1.  Schmidt, E. and Knackmuss, H.-J. Chemical structure and biodegradability of halogenated aromatic compounds. Conversion of chlorinated muconic acids into maleoylacetic acid. Biochem. J. 192 (1980) 339–347. [PMID: 7305906]
[EC 3.1.1.45 created 1983]