1. 1) S. Sugawara, Y. Nakamura and T. Shimomura, This Journal, 24, 281 (1960).
2. 2) S. Sugawara, Y. Nakamura and T. Shimomura, This Journal, 25, 358 (1961).
3. 3) K. Matsuda and K. Aso, J. Ferm. Tech. Japan, 31, 211 (1953).
4. 4) K. Aso, T. Watanabe, K. Sasaki and Y. Motomura, J. Agr. Chem. Soc. Japan, 35, 1073 (1961).
5. 5) A. Goottschalk, “The Enzyme” (J. B. Sumner and K. Myrbach, eds.), Academic Press, New York, 1950, Part I, p.557.