CI-MLRQ; complex I-MLRQ; EC 1.6.5.3; EC 1.6.99.3; MLRQ; NADH dehydrogenase (ubiquinone) 1 alpha subcomplex, 4 (9kD, MLRQ); NADH dehydrogenase (ubiquinone) 1 alpha subcomplex, 4, 9kDa; NADH dehydrogenase [ubiquinone] 1 alpha subcomplex 4; NADH-ubiquinone o