oxidoreductase activity, acting on the CH-CH group of donors, NAD or NADP as acceptor Delta24-sterol reductase activity https://github.com/geneontology/go-ontology/issues/30193 Reactome:R-HSA-196417 molecular_function sterol:NADP+ delta24-oxidoreductase activity Reactome:R-HSA-6807064 Catalysis of the reaction: NADP+ + 5-alpha-cholest-7-en-3-beta-ol = NADPH + H+ + 5-alpha-cholesta-7,24-dien-3-beta-ol. GO:0050614 EC:1.3.1.72 lanosterol Delta(24)-reductase activity lanosterol delta24-reductase activity D24-sterol reductase activity MetaCyc:RXN66-321 Reactome:R-HSA-9755937 RHEA:13685