| 摘要 |
An object of the present invention is to provide a DOI synthase having properties such as stability to heat and pH, which are superior to those of conventional enzymes, and a method for producing DOI using the above-mentioned enzyme. The present invention provides a 2-deoxy-scyllo-inosose synthase having the properties described in the following (1), (2), (4), (6) and (7), and also having the properties described in the following (3) and/or (5):;(1) action: the enzyme has a function to convert glucose-6-phosphate to 2-deoxy-scyllo-inosose;
(2) optimum pH range: pH 7.0 to 7.7;
(3) stable pH range: pH 6.0 to 8.0;
(4) optimum temperature range: 55° C. to 70° C.;
(5) stable temperature range: 20° C. to 46° C.;
(6) coenzyme used: NAD+; and
(7) molecular weight: 39,000 to 42,000. |
