ID 2.1.1.169 DE tricetin 3',4',5'-O-trimethyltransferase. CA tricetin + 3 S-adenosyl-L-methionine = 3',4',5'-O-trimethyltricetin + CA 3 S-adenosyl-L-homocysteine + 3 H(+). CC -!- The enzyme from Triticum aestivum catalyzes the sequential CC O-methylation of tricetin via 3'-O-methyltricetin, 3',5'-O- CC methyltricetin to 3',4',5'-O-trimethyltricetin. DR Q38J50, FOMT2_WHEAT; //