obsolete 4alpha-formyl-5alpha-cholesta-7,24-dien-3beta-ol-4alpha-methyl oxidase activity (obsolete GO:0102190)
OBSOLETE. Catalysis of the reaction: 4alpha-formyl-5alpha-cholesta-7,24-dien-3beta-ol + O2 + NADH(2-) = 4alpha-carboxy-5alpha-cholesta-7,24-dien-3beta-ol + NAD(1-) + H2O.