Reaction catalyzed by sterol 24-C-methyltransferase (2.1.1.41), cycloartenol 24-C-methyltransferase (2.1.1.142) show all sequences for 2.1.1.142
+
=
+
S-adenosyl-L-methionine
+
5alpha-cholesta-8,24-dien-3beta-ol
=
S-adenosyl-L-homocysteine
+
24-methylene-5alpha-cholest-8-en-3beta-ol