Predicted to enable cytochrome-c oxidase activity. Predicted to be involved in mitochondrial electron transport, cytochrome c to oxygen. Located in mitochondrion. Part of mitochondrial respiratory chain complex IV. Is expressed in several structures, including alimentary system; hindlimb musculature; integumental system; nervous system; and sensory organ. Human ortholog(s) of this gene implicated in cytochrome-c oxidase deficiency disease. Orthologous to human COX5A (cytochrome c oxidase subunit 5A). [provided by Alliance of Genome Resources, Apr 2022]