Expression of ksdD gene encoding 3-ketosteroid-?1-dehydrogenase from Arthrobacter simplex in Bacillus subtilis

The recombinant B. subtilis cells used for biotransformation of steroids provide a new method for production of steroid medicine. The time required for transformation of B. subtilis is much shorter than that of other bacteria, which means it will have wider usage in biopharmaceutical industry.