Enables NADH dehydrogenase (ubiquinone) activity. Involved in mitochondrial electron transport, NADH to ubiquinone and mitochondrial respiratory chain complex I assembly. Located in mitochondrial inner membrane. Implicated in Leber hereditary optic neuropathy; Leigh disease; and spinal muscular atrophy with lower extremity predominant 2B. [provided by Alliance of Genome Resources, Jul 2025]
A study in Piophila casei demonstrated that the MT-ND6 exhibited high genetic variability (Pi = 0.259) among the 13 mitochondrial protein-coding genes, identifying it as a phylogenetic marker suitable for evolutionary and comparative analyses [Bi et al. DOI:10.3390/genes14040883].