Fig. 2. A model of the mitochondrial Q biosynthetic protein complex in S. cerevisiae.
The putative complex contains six Coq polypeptides which are peripherally associated with the inner mitochondrial membrane (dark grey octagons) and a spanning integral membrane Coq protein (hatched rectangle). Proposed lipid components of the multi-subunit complexes include DMQ6 (black hexagon) and the final product Q6 (white hexagon). The stoichiometry of the components has yet to be determined.