Predicted to be involved in mitochondrial electron transport, cytochrome c to oxygen and vesicle-mediated transport. Predicted to be located in membrane. Predicted to be part of mitochondrial respiratory chain complex IV. Is an ortholog of C. elegans unc-64. In C. elegans, unc-64 is involved in several processes, including chemical synaptic transmission; positive regulation of anterior/posterior axon guidance; and ventral cord development.