. "Catalysis of the reaction: 3,4-dihydroxyphthalate + H(+) = 3,4-dihydroxybenzoate + CO(2)." . . "3,4-dihydroxyphthalate decarboxylase activity" . "3,4-dihydroxyphthalate 2-decarboxylase activity" . "3,4-dihydroxyphthalate carboxy-lyase (3,4-dihydroxybenzoate-forming)" . "3,4-dihydroxyphthalate carboxy-lyase activity" . . . .