Reaction catalyzed by indolepyruvate C-methyltransferase (2.1.1.47)

		+			=			+
	S-adenosyl-L-methionine	+		(indol-3-yl)pyruvate	=		S-adenosyl-L-homocysteine	+		(R)-3-(indol-3-yl)-2-oxobutanoate