NADH dehydrogenase [ubiquinone]1 alpha subcomplex subunit 3 is a accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (complex I), that is believed not to be involved in catalysis []. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone [, ].
