Reaction catalyzed by nucleoside phosphotransferase (2.7.1.77)

		+			=			+
	p-nitrophenylphosphate	+		O2,2'-anhydro-beta-L-5-methyluridine	=		4-nitrophenol	+		O2,2'-anhydro-beta-L-5-methyluridine 5'-phosphate