Catalyzes the conversion of zymostenol into lathosterol.
Catalyzes the convertion of zymosterol into 5alpha-cholesta-7,24-dien-3beta-ol.
Converts 4alpha-methylfecosterol into 24-methylenelophenol.
Catalyzes the convertion of 4alpha-methyl zymosterol into 4alpha-hydroxymethyl-5alpha-cholesta-8,24-dien-3beta-ol by enzymatic activity of Methylsterol monooxygenase.