The function of NDUFS7 (NADH:ubiquinone oxidoreductase core subunit S7, Ensembl gene identifier ENSG00000115286) is as follows. Core subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I) which catalyzes electron transfer from NADH through the respiratory chain, using ubiquinone as an electron acceptor (PubMed:17275378). Essential for the catalytic activity of complex I (PubMed:17275378). .