RPSBLAST alignment for GI: 254781167 and conserved domain: cd02801

>gnl|CDD|73368 cd02801, DUS_like_FMN, Dihydrouridine synthase-like (DUS-like) FMN-binding domain. Members of this family catalyze the reduction of the 5,6-double bond of a uridine residue on tRNA. Dihydrouridine modification of tRNA is widely observed in prokaryotes and eukaryotes, and also in some archaea. Most dihydrouridines are found in the D loop of t-RNAs. The role of dihydrouridine in tRNA is currently unknown, but may increase conformational flexibility of the tRNA. It is likely that different family members have different substrate specificities, which may overlap. 1VHN, a putative flavin oxidoreductase, has high sequence similarity to DUS. The enzymatic mechanism of 1VHN is not known at the present.. Length = 231
 Score =  218 bits (558), Expect = 1e-57
 Identities = 89/237 (37%), Positives = 136/237 (57%), Gaps = 17/237 (7%)

Query: 1   MVDWTDRHYRFFARLLTNNALLYTEMIVADAILRGDKK--NILGFSTQEKPLALQIGGAD 58
           MV  TD  +R   R      L+YTEMI A A+LRG++K   +L  + +E+PL +Q+GG+D
Sbjct: 7   MVGVTDLPFRLLCRRYGA-DLVYTEMISAKALLRGNRKRLRLLTRNPEERPLIVQLGGSD 65

Query: 59  ISKLVEAAKIVEDFGYNEINLNVGCPSARVHEGSFGACLMLNPDIVGDCIAAMCKALSIP 118
              L EAAKIVE+ G + I+LN+GCPS +V +G  GA L+ +P++V + + A+ +A+ IP
Sbjct: 66  PETLAEAAKIVEELGADGIDLNMGCPSPKVTKGGAGAALLKDPELVAEIVRAVREAVPIP 125

Query: 119 VTVKCRIGVDDQIPAVALRNLVKSIKKSGVNGIWIHARKAILKGLSPKDNRKIPNLDYDI 178
           VTVK R+G DD+   +    L K+++ +G + + +H R          + R     D+D 
Sbjct: 126 VTVKIRLGWDDEEETL---ELAKALEDAGASALTVHGRTR--------EQRYSGPADWDY 174

Query: 179 VYEIKKENPDLFIGLNGGLEDMSQALKIL--PSVDGVMIGRAAYKNSAMLTTVDEYF 233
           + EI KE   + +  NG +  +  AL+ L    VDGVMIGR A  N  +   + E  
Sbjct: 175 IAEI-KEAVSIPVIANGDIFSLEDALRCLEQTGVDGVMIGRGALGNPWLFREIKELL 230