A mutant , TS-N-121 was obtained by mutation and plate screening from a parent strain Mycobacterium fortuitum MF2 , which could transform sterol into androstanedione as the main product .
从雄甾二酮的转化产生菌偶发分枝杆菌MF2出发，经紫外诱变结合平板筛选，获得一株主要转化生产睾酮的突变株TS-N-121。
mf2