NDUFA8

The protein encoded by this gene belongs to the complex I 19 kDA subunit family. Mammalian complex I is composed of 45 different subunits. This protein has NADH dehydrogenase activity and oxidoreductase activity. It plays an important role in transfering electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone. [provided by RefSeq]

Full Name

NADH dehydrogenase (ubiquinone) 1 alpha subcomplex, 8, 19kDa

Function

Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis (PubMed:27626371, PubMed:32385911, PubMed:33153867).

Complex I functions in the transfer of electrons from NADH to the respiratory chain (PubMed:27626371).

The immediate electron acceptor for the enzyme is believed to be ubiquinone (PubMed:27626371).

Biological Process

Aerobic respiration Source: ComplexPortal
Mitochondrial ATP synthesis coupled proton transport Source: ComplexPortal
Mitochondrial electron transport, NADH to ubiquinone Source: UniProtKB
Mitochondrial respiratory chain complex I assembly Source: UniProtKB

Cellular Location

Mitochondrion
Mitochondrion inner membrane
Mitochondrion intermembrane space

Involvement in disease

Mitochondrial complex I deficiency, nuclear type 37 (MC1DN37):
A form of mitochondrial complex I deficiency, the most common biochemical signature of mitochondrial disorders, a group of highly heterogeneous conditions characterized by defective oxidative phosphorylation, which collectively affects 1 in 5-10000 live births. Clinical disorders have variable severity, ranging from lethal neonatal disease to adult-onset neurodegenerative disorders. Phenotypes include macrocephaly with progressive leukodystrophy, non-specific encephalopathy, cardiomyopathy, myopathy, liver disease, Leigh syndrome, Leber hereditary optic neuropathy, and some forms of Parkinson disease. MC1DN37 features include developmental delay, cerebral atrophy, epilepsy, growth retardation, congenital myopathy with disproportion of fibers, and severely decreased activity of complex I. MC1DN37 transmission pattern is consistent with autosomal recessive inheritance.

PTM

May contain intrachain disulfide bonds, as evidenced by its electrophoretic mobility under reducing vs non-reducing conditions.