Reaction catalyzed by baicalein 7-O-glucuronosyltransferase (2.4.1.253)

		+			=			+
	UDP-D-glucuronate	+		5,7-dihydroxy-8-methoxyflavone	=		UDP	+		5,7-dihydroxy-8-methoxyflavone-7-O-beta-D-glucuronate