1-hydroxy-5alpha-androstan-3,17-dione + A <=> 5alpha-androstan-1,3,17-trione + AH2
1-hydroxy-5alpha-androstan-3,17-dione + a <=> 5alpha-androstan-1,3,17-trione + ah2
1-hydroxy-5alpha-androstan-3,17-dione + A <=> 5alpha-androstan-1,3,17-trione + AH2
1-hydroxy-5alpha-androstan-3,17-dione + a <=> 5alpha-androstan-1,3,17-trione + ah2