label: 2-hydroxychromene-2-carboxylate isomerase activity
label_lc: 2-hydroxychromene-2-carboxylate isomerase activity
description: "Catalysis of the reaction: 2-hydroxychromene-2-carboxylate = (3E)-4-(2-hydroxyphenyl)-2-oxobut-3-enoate. (3E)-4-(2-hydroxyphenyl)-2-oxobut-3-enoate is also known as trans-o-hydroxybenzylidenepyruvate."