label: 3beta-hydroxysteroid-4alpha-carboxylate 3-dehydrogenase (decarboxylating) [NAD(+)] activity
label_lc: 3beta-hydroxysteroid-4alpha-carboxylate 3-dehydrogenase (decarboxylating) [nad(+)] activity
description: "Catalysis of the reaction: 4alpha-carboxy-4beta,14alpha-dimethyl-9beta,19-cyclo-5alpha-ergost-24(241)-en-3beta-ol + NAD+ = CO2 + cycloeucalenone + NADH."