label: 2-chloro-4-carboxymethylenebut-2-en-1,4-olide isomerase activity
label_lc: 2-chloro-4-carboxymethylenebut-2-en-1,4-olide isomerase activity
description: "Catalysis of the reaction: cis-2-chloro-4-carboxymethylenebut-2-en-1,4-olide = trans-2-chloro-4-carboxymethylenebut-2-en-1,4-olide."