1.1.1.193 5-amino-6-ribosylamino-2,4(1H,3H)-pyrimidinedione 5'-phosphate + NADPH + H+ 1.1.1.193 5-amino-2,6-dioxy-4-(5'-phosphoribosylamino)pyrimidine + NADPH 1.1.1.193 additional information