Cortisone Reductase

3 alpha,20 beta Hydroxysteroid Dehydrogenase; 20 beta Hydroxysteroid Dehydrogenase; Dehydrogenase, 20-beta-Hydroxysteroid; Reductase, Cortisone
An enzyme that catalyzes the interconversion of a ketone and hydroxy group at C-20 of cortisone and other 17,20,21-trihydroxy steroids. EC 1.1.1.53.