demethylspheroidene O-methyltransferase Quick inquiry Where by to purchase Suppliers range In Rhodopseudomonas capsulata and Rubrivivax gelatinosus the enzyme is involved in biosynthesis of spheroidene. In Rubrivivax gelatinosus the enzyme also catalyses the methylation of demethylspirilloxanthin to spirilloxanthin as well as methylation of three,4