Reaction catalyzed by undecaprenyl-diphosphooligosaccharide-protein glycotransferase (2.4.99.19)

	tritrans,heptacis-undecaprenyl diphospho-O157 antigen	+			=			+		[protein]-L-asparagine-O157 antigen
	tritrans,heptacis-undecaprenyl diphospho-O157 antigen	+		[protein]-L-asparagine	=		tritrans,heptacis-undecaprenyl diphosphate	+		[protein]-L-asparagine-O157 antigen