Predicted to enable copper ion binding activity. Predicted to be involved in aerobic respiration and protein-containing complex assembly. Predicted to be located in mitochondrial envelope. Predicted to be active in mitochondrial inner membrane. Is expressed in adult head. Human ortholog(s) of this gene implicated in mitochondrial complex IV deficiency nuclear type 23. Orthologous to human COX11 (cytochrome c oxidase copper chaperone COX11).