A potential assembly factor for the cytochrome c oxidase complex: TAANMAN, J-W.. and CAPALDI, R. A. (1992) Purification of yeast cytochrome c oxidase with a subunit composition resembling the mammalian enzyme J. Biol. Chem. 267, 22481–22485 LaMARCHE, A. E. P., ABATE, M. I., CHAN. S. H. P. and TRUMPOWER, B. L. (1992) Isolation and characterization of COX12, the nuclear gene for a previously unrecognized subunit of Saccharomyces cerevisiae cytochrome c oxidase J. Biol. Chem. 267, 22473–22480