S-adenosyl-L-methionine + an (S)-7,8,13,14-tetrahydroprotoberberine = S-adenosyl-L-homocysteine + an (S)-cis-N-methyl-7,8,13,14-tetrahydroprotoberberine [RN:R04716]
Partial purification and characterization of S-adenosyl-L-methionine:(S)-tetrahydroprotoberberine cis-N-methyltransferase from suspension-cultured cells of Eschscholtzia and Corydalis.
Molecular cloning and characterization of tetrahydroprotoberberine cis-N-methyltransferase, an enzyme involved in alkaloid biosynthesis in opium poppy.
Targeted metabolite and transcript profiling for elucidating enzyme function: isolation of novel N-methyltransferases from three benzylisoquinoline alkaloid-producing species.