1.3.1.88	5,6-dihydrouracil16 in tRNA + NAD(P)+ = uracil16 in tRNA + NAD(P)H + H+	
1.3.1.88	5,6-dihydrouracil17 in tRNA + NAD(P)+ = uracil17 in tRNA + NAD(P)H + H+