Reaction catalyzed by tricetin 3',4',5'-O-trimethyltransferase (2.1.1.169)

3		+			=	3		+
	3 S-adenosyl-L-methionine	+		tricetin	=		3 S-adenosyl-L-homocysteine	+		3',4',5'-O-trimethyltricetin