Reaction catalyzed by dATP(dGTP)-DNA purinetransferase (2.6.99.1)

		+		depurinated poly(dG-dC)	=			+		purinated poly(dG-dC)
	dGTP	+		depurinated poly(dG-dC)	=		deoxyribose triphosphate	+		purinated poly(dG-dC)