NADH dehydrogenase activity NADH dehydrogenase (ubiquinone) activity https://github.com/geneontology/go-ontology/issues/20616 https://github.com/geneontology/go-ontology/issues/21275 https://github.com/geneontology/go-ontology/issues/25784 https://github.com/geneontology/go-ontology/issues/25935 https://github.com/geneontology/go-ontology/issues/27641 https://github.com/geneontology/go-ontology/issues/30193 https://github.com/geneontology/go-ontology/issues/30272 https://github.com/geneontology/go-ontology/issues/30619 NADH-ubiquinone reductase activity mitochondrial electron transport complex I activity NADH:ubiquinone oxidoreductase activity RHEA:29091 complex I (electron transport chain) activity ubiquinone reductase activity complex 1 dehydrogenase activity DPNH-coenzyme Q reductase activity NADH-CoQ reductase activity DPNH-ubiquinone reductase activity NADH coenzyme Q1 reductase activity complex I (mitochondrial electron transport) activity NADH-ubiquinone oxidoreductase activity electron transfer complex I activity type 1 dehydrogenase activity molecular_function NADH-Q6 oxidoreductase activity NADH-CoQ oxidoreductase activity dihydronicotinamide adenine dinucleotide-coenzyme Q reductase activity MetaCyc:NADH-DEHYDROG-A-RXN mitochondrial electron transport complex 1 activity Reactome:R-HSA-163217 NADH-coenzyme Q reductase activity EC:7.1.1.2 Catalysis of the reaction: NADH + ubiquinone + 5 H+(in) = NAD+ + ubiquinol + 4 H+(out). complex I (NADH:Q1 oxidoreductase) activity GO:0008137 NADH:ubiquinone oxidoreductase complex activity NADH-ubiquinone-1 reductase activity coenzyme Q reductase activity NADH-coenzyme Q oxidoreductase activity reduced nicotinamide adenine dinucleotide-coenzyme Q reductase activity electron transfer activity proton transmembrane transporter activity oxidoreduction-driven active transmembrane transporter activity oxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor active monoatomic ion transmembrane transporter activity