Reaction: S-adenosyl-L-methionine + 24-methylenelophenol = S-adenosyl-L-homocysteine + (Z)-24-ethylidenelophenol
For diagram click here.
lophenol = 4α-methyl-5α-cholesta-7-en-3β-ol
Other names: SMT2; 24-methylenelophenol C-241-methyltransferase
Systematic name: S-adenosyl-L-methionine:24-methylenelophenol C-methyltransferase
Comments: This is the second methylation step of plant sterol biosynthesis (cf EC 18.104.22.168, cycloartenol 24-C-methyltransferase).
Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number: 67165-89-3
1. Bouvier-Navé, P., Husselstein, T. and Benveniste, P. Two families of sterol methyltransferases are involved in the first and the second methylation steps of plant biosynthesis. Eur. J. Biochem. 256 (1998) 88-96. [PMID: 9746350]