Reaction catalyzed by double-stranded uracil-DNA glycosylase (3.2.2.28)

	xanthine-mismatched double-stranded DNA	+		H2O	=			+		double-stranded DNA with abasic site
	xanthine-mismatched double-stranded DNA	+		H2O	=		xanthine	+		double-stranded DNA with abasic site