oxidoreductase activity, acting on the CH-CH group of donors, NAD or NADP as acceptor 1,6-dihydroxycyclohexa-2,4-diene-1-carboxylate dehydrogenase activity https://github.com/geneontology/go-ontology/issues/30193 cis-1,2-dihydroxycyclohexa-3,5-diene-1-carboxylate:NAD+ oxidoreductase activity RHEA:11560 EC:1.3.1.25 (1R,6R)-1,6-dihydroxycyclohexa-2,4-diene-1-carboxylate:NAD+ oxidoreductase (decarboxylating) DHB dehydrogenase activity DHBDH activity MetaCyc:1.3.1.25-RXN molecular_function 3,5-cyclohexadiene-1,2-diol-1-carboxylic acid dehydrogenase activity Catalysis of the reaction: NAD+ + 1,6-dihydroxycyclohexa-2,4-diene-1-carboxylate = NADH + CO2 + catechol. GO:0047116 dihydrodihydroxybenzoate dehydrogenase activity cis-1,2-dihydroxycyclohexa-3,5-diene-1-carboxylate:NAD(+) oxidoreductase activity 3,5-cyclohexadiene-1,2-diol-1-carboxylate dehydrogenase activity 2-hydro-1,2-dihydroxybenzoate dehydrogenase activity