Tags: Enzyme.
TRNA-dihydrouridine20a/20b synthase (NAD(P)+) (EC 1.3.1.90 Dus4p) is an enzyme with system name tRNA-56-dihydrouracil20a/20b:NAD(P)+ oxidoreductase. This enzyme catalyses the following chemical reaction (1) 56-dihydrouracil20a in tRNA + NAD(P)+ uracil20a in tRNA + NAD(P)H + H+ (2) 56-dihydrouracil20b in tRNA + NAD(P)+ uracil20b in tRNA + NAD(P)H + H+A flavoenzyme. The enzyme specifically modifies uracil20a and uracil20b in tRNA.