Made in 1962, Akira Kurosawa's sequel to Yojimbo. The ronin samurai Sanjuro, played by Toshiro Mifune helps a young samurai rescue his uncle.
... to an enzyme called NADP+ reductase[?] which uses them to drive the reaction NADP+ + H+ + 2e- → NADPH This consumes the H+ ions produced by the splitting of ...