>pfam01207 Dus Dihydrouridine synthase (Dus). Members of this family catalyse 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 archae. 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. Dus 1 from Saccharomyces cerevisiae acts on pre-tRNA-Phe, while Dus 2 acts on pre-tRNA-Tyr and pre-tRNA-Leu. Dus 1 is active as a single subunit, requiring NADPH or NADH, and is stimulated by the presence of FAD. Some family members may be targeted to the mitochondria and even have a role in mitochondria.

Probab=96.10 E-value=0.11 Score=32.96 Aligned_cols=135 Identities=19% Similarity=0.181 Sum_probs=94.3 Q ss_pred CCHHHHHHHHHHHHHCCCCEEEEC----------CCCCCHHCCCHHHHHHHHHHHHHCCCCCCCCCC----CCCCCHHHH Q ss_conf 689999999999997699899986----------723250108999999986543110123443003----674102789 Q gi|254780276|r 19 IDEDAFVEHIEWQITEGSGGLVPA----------GTTGESSTLSHEEHCRIIELCVKTVASRVPVMA----GIGSNNTRE 84 (292) Q Consensus 19 iD~~~~~~~i~~l~~~gv~gi~~~----------G~tGE~~~Ls~~Er~~~~~~~~~~~~~r~pii~----gv~~~~~~~ 84 (292) T Consensus 63 ~dp~~~~~aa~~~~~~g~d~IDlN~GCP~~~v~~~g~GsaLl~~p~~~~~iv~a~~~~~~--~PVtvK~RlG~d-~~~~~ 139 (309) T pfam01207 63 SDPALLAEAAKLVADLGADIIDINMGCPAKKVTRGGAGAALLRDPDLVAQIVKAVVKAVD--IPVTVKIRIGWD-ESHEN 139 (309) T ss_pred CCHHHHHHHHHHHHHCCCCEEEEECCCCHHHHCCCCCCEEHHHCHHHHHHHHHHHHHHCC--CCEEEEEECCCC-CCHHH T ss_conf 999999999999886399989651899999987899776254177899999999997558--854675433788-76388 Q ss_pred HHHHHHHHHHCCCCCCCEECCCCCC-CCHHHHHHHHHHHHHHHCCCCEEEECHHHCCCCCCHHHHHHHHHHCCHHHHHHC Q ss_conf 9997534321024432001234334-317889999999875302330121001111121110689997432030233100 Q gi|254780276|r 85 SVELAQYAHSIGADALLVVIPYYNK-PNRRGLLAHFGEIATTVSSPIYIYNNPSRTVIEMDVDTMAELAATYPNIVGVKD 163 (292) Q Consensus 85 ~i~~a~~a~~~Gad~i~v~~P~~~~-~~~~~i~~~~~~i~~~~~~pi~iYn~P~~~g~~~~~~~l~~L~~~~pni~giK~ 163 (292) T Consensus 140 ~~~~~~~l~~~G~~~itvH~Rt~~q~~~g~a~w~~i~~~k~~~~ipvi~------NGdi~~~~d~~~~l~~-tg~dgvMi 212 (309) T pfam01207 140 AVEIARRVEDAGAQALTVHGRTRAQNYEGPADWDAIKQVKQAVSIPVIA------NGDITDAEDAQRCLSY-TGADGVMI 212 (309) T ss_pred HHHHHHHHHHCCCCEEEEECCCHHHCCCCCCCHHHHHHHHHHCCCCEEE------ECCCCCHHHHHHHHHH-HCCCEEEE T ss_conf 9999999984688879996763240267865418999999858982898------0894889999999861-09999998

HHsearch alignment for GI: 254780276 and conserved domain: pfam01207