5-amino-6-(5-phosphoribosylamino)uracil reductase activity
5-amino-6-(5-phosphoribosylamino)uracil reductase activity
5-amino-6-(5-phosphoribitylamino)uracil:NADP+ 1'-oxidoreductase activity
5-amino-6-(5-phosphoribitylamino)uracil:nadp+ 1'-oxidoreductase activity