Reaction catalyzed by procollagen glucosyltransferase (2.4.1.66)

		+			=			+
	UDP-alpha-D-glucose	+		[procollagen]-(5R)-5-O-(beta-D-galactosyl)-5-hydroxy-L-lysine	=		UDP	+		[procollagen]-(5R)-5-O-[alpha-D-glucosyl-(1->2)-beta-D-galactosyl]-5-hydroxy-L-lysine