Predicted to be involved in mitochondrial cytochrome c oxidase assembly. Located in mitochondrion. Is expressed in heart ventricle; nervous system; and sensory organ. Human ortholog(s) of this gene implicated in fatal infantile cardioencephalomyopathy due to cytochrome c oxidase deficiency 3. Orthologous to human COA5 (cytochrome c oxidase assembly factor 5). [provided by Alliance of Genome Resources, Apr 2022]