Complex I assembly factor ACAD9, mitochondrial
Function
As part of the MCIA complex, primarily participates in the assembly of the mitochondrial complex I and therefore plays a role in oxidative phosphorylation (PubMed:20816094, PubMed:24158852, PubMed:32320651). This moonlighting protein has also a dehydrogenase activity toward a broad range of substrates with greater specificity for long-chain unsaturated acyl-CoAs (PubMed:12359260, PubMed:16020546, PubMed:21237683, PubMed:24158852). However, in vivo, it does not seem to play a primary role in fatty acid oxidation (PubMed:20816094, PubMed:24158852). In addition, the function in complex I assembly is independent of the dehydrogenase activity of the protein (PubMed:24158852).
Involvement in disease
Mitochondrial complex I deficiency, nuclear type 20
MC1DN20
An autosomal recessive metabolic disorder associated with mitochondrial complex I deficiency, resulting in multisystemic and variable manifestations. Clinical features include infantile onset of acute metabolic acidosis, Reye-like episodes (brain edema and vomiting that may rapidly progress to seizures, coma and death), exercise intolerance, hypertrophic cardiomyopathy, liver failure, muscle weakness, and neurologic dysfunction.
None
The disease is caused by variants affecting the gene represented in this entry.
Sequence Similarities
Belongs to the acyl-CoA dehydrogenase family.
Tissue Specificity
Ubiquitously expressed in most normal human tissues and cancer cell lines with high level of expression in heart, skeletal muscles, brain, kidney and liver (PubMed:12359260). In the cerebellum uniquely expressed in the granular layer (at protein level) (PubMed:21237683).
Cellular localization
- Mitochondrion inner membrane
- Peripheral membrane protein
- Matrix side
- Essentially associated with membranes.
Alternative names
Acyl-CoA dehydrogenase family member 9, ACAD-9, ACAD9