Reaction: S-adenosyl-L-methionine + (S)-7,8,13,14-tetrahydroprotoberberine = S-adenosyl-L-homocysteine + cis-N-methyl-(S)-7,8,13,14-tetrahydroprotoberberine
For diagram click here or here or click here.
Other name(s): tetrahydroprotoberberine cis-N-methyltransferase
Systematic name: S-adenosyl-L-methionine:(S)-7,8,13,14-tetrahydroprotoberberine cis-N-methyltransferase
Comments: involved in the biosynthesis of isoquinoline alkaloids in plants.
Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, PDB, CAS registry number: 106878-42-6
References:
1. Rueffer, M., Zumstein, G., Zenk, M.H. Partial purification and characterization of S-adenosyl-L-methionine:(S)-tetrahydroprotoberberine cis-N-methyltransferase from suspension-cultured cells of Eschscholtzia and Corydalis. Phytochemistry 29 (1990) 3727-3733.