EOG8X3KJ1	GO:0022900	22/75	electron transport chain	biological_process	"A process in which a series of electron carriers operate together to transfer electrons from donors to any of several different terminal electron acceptors to generate a transmembrane electrochemical gradient." [GOC:mtg_electron_transport]
EOG8X3KJ1	GO:0005747	22/75	mitochondrial respiratory chain complex I	cellular_component	"A protein complex located in the mitochondrial inner membrane that forms part of the mitochondrial respiratory chain. It contains about 25 different polypeptide subunits, including NADH dehydrogenase (ubiquinone), flavin mononucleotide and several different iron-sulfur clusters containing non-heme iron. The iron undergoes oxidation-reduction between Fe(II) and Fe(III), and catalyzes proton translocation linked to the oxidation of NADH by ubiquinone." [GOC:mtg_sensu, ISBN:0198547684]
EOG8X3KJ1	GO:0008137	3/75	NADH dehydrogenase (ubiquinone) activity	molecular_function	"Catalysis of the reaction: NADH + H+ + ubiquinone = NAD+ + ubiquinol." [EC:1.6.5.3]