(5alpha)-campestan-3-one hydroxylase activity
Catalysis of the reaction: H+ + (5alpha)-campestan-3-one + O2 + NADPH = (5alpha,22S,24R)-22-hydroxyergostan-3-one + H2O + NADP.
GO:0016709
oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen, NAD(P)H as one donor, and incorporation of one atom of oxygen
is_a