carboxy-lyase activity D-dopachrome decarboxylase activity https://github.com/geneontology/go-ontology/issues/30193 D-dopachrome carboxy-lyase (5,6-dihydroxyindole-forming) activity EC:4.1.1.84 MetaCyc:4.1.1.84-RXN Catalysis of the reaction: D-dopachrome + H+ = 5,6-dihydroxyindole + CO2. RHEA:18441 dopachrome conversion activity D-tautomerase activity GO:0030928 phenylpyruvate tautomerase II activity D-dopachrome tautomerase activity KEGG_REACTION:R07313 molecular_function dopachrome decarboxylase activity D-dopachrome carboxy-lyase activity GO:0033981