Reaction: S-adenosyl-L-methionine + 5,8,13,13a-tetrahydrocolumbamine = S-adenosyl-L-homocysteine + tetrahydropalmatine
Other name(s): tetrahydrocolumbamine methyltransferase
Systematic name: S-adenosyl-L-methionine:5,8,13,13a-tetrahydrocolumbamine 2-O-methyltransferase
Comments: Involved in the biosynthesis of the berberine alkaloids.
Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, PDB, CAS registry number: 93792-09-7
References:
1. Beecher, C.W.W. and Kelleher, W.J. Enzymatic study of the late stages of protoberberine alkaloid biosynthesis. Tetrahedron Lett. 25 (1984) 4595-4598.