among the enzyme activities relevant to the metabolism , delta 4-5 alpha-reductase and 3 beta-hydroxysteroid dehydrogenase were intracellularly localized to the microsomal fraction ( 10,000 -- 105,000 x g ) , and 3 alpha-hydroxysteroid dehydrogenase was detected exclusively in the cytosol fraction ( supernatant fluid at 105,000 x g ) .
C0000413
3 beta-hydroxysteroid dehydrogenase
C0048751
3