>sp|P53720|DUS2_YEAST tRNA-dihydrouridine(20) synthase [NAD(P)+] OS=Saccharomyces cerevisiae GN=SMM1 MVTYAGKLVLAPMVRAGELPTRLMALAHGADLVWSPEIIDKKLIQCVRKENTALQTVDYV VPSKVQTRPETLVFRTYPKLESSKLIFQIGSASPALATQAALKVINDVSGIDINAGCPKH FSIHSGMGSALLRTPDTLCLILKELVKNVGNPHSKPISVKIRLLDTKQDTLQLVKRLCAT GITNLTVHCRKTEMRNREQPITDYIAEIYEICQANNVSLIVNGAIRDRSHFHDLQANHWK NTNIGGMIAECAERDPTVFDHTSKPSEDGPSWVVACREFIQWATKFDNHIGNTKYMLSRI VPGKSVFFQYFARCKSPEEVSFVLKQLNDDGSAQTDPSEYLENCRAQEKALKNANAIAKQ KRKQTDHIGSDTKKQKVVPLPTDI