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. Belongs to the complex I NDUFA9 subunit family. Note: This description may include information from UniProtKB.
Protein type: EC 18.104.22.168; EC 22.214.171.124; Energy Metabolism - oxidative phosphorylation; Mitochondrial; Oxidoreductase