Reaction catalyzed by anthocyanin 6''-O-malonyltransferase (2.3.1.171)

		+			=		CoA	+
	malonyl-CoA	+		peonidin 3-O-beta-D-glucoside	=		CoA	+		peonidin 3-O-(6-O-malonyl-beta-D-glucoside)