_

XuFen Zhu, Mihoko Yuasa, Kazunori Okada, Kengo Suzuki, Tsuyoshi Nakagawa, Makoto Kawamukai and Hideyuki Matsuda. Production of ubiquinone in Escherichia coli by expression of various genes responsible for ubiquinone biosynthesis. J. Ferment. Bioeng. 79(5):493-495. (1995).

Kengo Suzuki, Minoru Ueda, Mihoko Yuasa, Tsuyoshi Nakagawa, Makoto Kawamukai, and Hideyuki Matsuda. Evidence that E. coli ubiA product is a functional homolog of yeast COQ2 and the regulation of the ubiA gene expression. Biosci. Biotech. Biochem. 58(10), 1814-1819. (1994).