GO:0008689

3-demethylubiquinone-9 3-O-methyltransferase activity

Details: 
Catalysis of the reaction: S-adenosyl-L-methionine + 3-demethylubiquinone-9 = S-adenosyl-L-homocysteine + ubiquinone-9. [GOC:dph]
Evidence Code: 
IEA