- Ubiquinone biosynthesis. Cloning of the genes coding for chorismate pyruvate-lyase and 4-hydroxybenzoate octaprenyl transferase from Escherichia coli. Siebert, M., Bechthold, A., Melzer, M., May, U., Berger, U., Schröder, G., Schröder, J., Severin, K., Heide, L. FEBS Lett. (1992)