. "Catalysis of the reaction: NADP+ + 4,4-dimethyl-5-alpha-cholesta-8,24-dien-3-beta-ol = NADPH + H+ + 4,4-dimethyl-5-alpha-cholesta-8,14,24-trien-3-beta-ol." . . "delta14-sterol reductase activity" . "4,4-dimethyl-5alpha-cholesta-8,24-dien-3beta-ol:NADP+ delta14-oxidoreductase activity" . "C-14 sterol reductase activity" . "D14-sterol reductase activity" . "sterol C-14 reductase activity" . "sterol C14-reductase activity" . . . .