Reaction catalyzed by delphinidin 3',5'-O-glucosyltransferase (2.4.1.249)

		+			=			+
	UDP-glucose	+		delphinidin 3-O-(6''-O-malonyl)-beta-D-glucoside	=		UDP	+		delphinidin 3-O-(6''-O-malonyl)-beta-D-glucoside-3'-O-beta-D-glucoside