NDUFC2

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.

Full Name

NADH:Ubiquinone Oxidoreductase Subunit C2

Function

Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis but required for the complex assembly. 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.

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 inner membrane

Involvement in disease

Mitochondrial complex I deficiency, nuclear type 36 (MC1DN36):
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. MC1DN36 is characterized by global developmental delay, hypotonia, and failure to thrive apparent from infancy or early childhood. Affected individuals usually do not acquire ambulation, show progressive spasticity, and have impaired intellectual development with absent speech. MC1DN36 transmission pattern is consistent with autosomal recessive inheritance.

Topology

Helical: 56-75