5alpha-cholest-7-en-3-one + S-adenosyl-L-methionine = 4alpha-methyl-5alpha-cholest-7-en-3-one + S-adenosyl-L-homocysteine + H(+)
5alpha-cholest-7-en-3-one + s-adenosyl-l-methionine = 4alpha-methyl-5alpha-cholest-7-en-3-one + s-adenosyl-l-homocysteine + h(+)
5alpha-cholest-7-en-3-one + S-adenosyl-L-methionine = 4alpha-methyl-5alpha-cholest-7-en-3-one + S-adenosyl-L-homocysteine + H(+)
5alpha-cholest-7-en-3-one + s-adenosyl-l-methionine = 4alpha-methyl-5alpha-cholest-7-en-3-one + s-adenosyl-l-homocysteine + h(+)