. "An integral membrane complex that possesses NADH oxidoreductase activity. The complex is one of the components of the electron transport chain. It catalyzes the transfer of a pair of electrons from NADH to a quinone." . . . "Complex I" . "NADH dehydrogenase complex" . "NADH dehydrogenase complex (plastoquinone)" . "NADH dehydrogenase complex (quinone)" . "NADH dehydrogenase complex (ubiquinone)" . "NADH:plastoquinone reductase complex" . "plastid NADH dehydrogenase complex (plastoquinone)" . . . . . . . . . . .