| Description | NDUFS4 is a subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), the primary multi-subunit enzyme complex of the mitochondrial respiratory chain. Complex I is involved in cellular ATP production, the main source of energy for numerous vital processes in living cells. NDUFS4 removes electrons from NADH and passes them by a series of diverse protein-coupled redox centers to the electron acceptor ubiquinone. NDUFS4 presents a hotspot of mutations in the genetic apparatus of oxidative phosphorylation and the correct assembly of the subunit it encodes is essential for completion of the assembly of complex I Synonyms: AQDQ, NDUFS4, NADH dehydrogenase [ubiquinone] iron-sulfur protein 4 mitochondrial, NADH-ubiquinone oxidoreductase 18 kDa subunit, Complex I-18 kDa, CI-18 kDa, Complex I-AQDQ, CI-AQDQ |