Predicted to enable O-methyltransferase activity and hexaprenyldihydroxybenzoate methyltransferase activity. Predicted to be involved in several processes, including glycerol metabolic process; regulation of ubiquinone biosynthetic process; and ubiquinone biosynthetic process. Located in mitochondrion. Orthologous to human COQ3 (coenzyme Q3, methyltransferase). [provided by Alliance of Genome Resources, Apr 2022]