Reaction: S-adenosyl-L-methionine + vitexin 2"-O-β-L-rhamnoside = S-adenosyl-L-homocysteine + 7-O-methylvitexin 2"-O-β-L-rhamnoside
For diagram click here.
Systematic name: S-adenosyl-L-methionine:vitexin-2"-O-β-L-rhamnoside 7-O-methyltransferase
Comments: The flavonoids vitexin and isovitexin 2"-O-arabinoside do not act as substrates for the enzyme from oats (Avena sativa).
Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number: 90698-29-6
1. Knogge, W. and Weissenbock, G. Purification, characterization, and kinetic mechanism of S-adenosyl-L-methionine: vitexin 2"-O-rhamnoside 7-O-methyltransferase of Avena sativa L. Eur. J. Biochem. 140 (1984) 113-118. [PMID: 6705789]