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DUS_STAEQ
ID   DUS_STAEQ               Reviewed;         326 AA.
AC   Q5HKD5;
DT   20-DEC-2005, integrated into UniProtKB/Swiss-Prot.
DT   15-FEB-2005, sequence version 1.
DT   03-AUG-2022, entry version 92.
DE   RecName: Full=Probable tRNA-dihydrouridine synthase;
DE            EC=1.3.1.-;
GN   Name=dus; OrderedLocusNames=SERP2413;
OS   Staphylococcus epidermidis (strain ATCC 35984 / RP62A).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Staphylococcaceae;
OC   Staphylococcus.
OX   NCBI_TaxID=176279;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 35984 / RP62A;
RX   PubMed=15774886; DOI=10.1128/jb.187.7.2426-2438.2005;
RA   Gill S.R., Fouts D.E., Archer G.L., Mongodin E.F., DeBoy R.T., Ravel J.,
RA   Paulsen I.T., Kolonay J.F., Brinkac L.M., Beanan M.J., Dodson R.J.,
RA   Daugherty S.C., Madupu R., Angiuoli S.V., Durkin A.S., Haft D.H.,
RA   Vamathevan J.J., Khouri H., Utterback T.R., Lee C., Dimitrov G., Jiang L.,
RA   Qin H., Weidman J., Tran K., Kang K.H., Hance I.R., Nelson K.E.,
RA   Fraser C.M.;
RT   "Insights on evolution of virulence and resistance from the complete genome
RT   analysis of an early methicillin-resistant Staphylococcus aureus strain and
RT   a biofilm-producing methicillin-resistant Staphylococcus epidermidis
RT   strain.";
RL   J. Bacteriol. 187:2426-2438(2005).
CC   -!- FUNCTION: Catalyzes the synthesis of 5,6-dihydrouridine (D), a modified
CC       base found in the D-loop of most tRNAs, via the reduction of the C5-C6
CC       double bond in target uridines. {ECO:0000250|UniProtKB:P33371}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a 5,6-dihydrouridine in tRNA + NAD(+) = a uridine in tRNA +
CC         H(+) + NADH; Xref=Rhea:RHEA:54452, Rhea:RHEA-COMP:13339, Rhea:RHEA-
CC         COMP:13887, ChEBI:CHEBI:15378, ChEBI:CHEBI:57540, ChEBI:CHEBI:57945,
CC         ChEBI:CHEBI:65315, ChEBI:CHEBI:74443;
CC         Evidence={ECO:0000250|UniProtKB:P33371};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a 5,6-dihydrouridine in tRNA + NADP(+) = a uridine in tRNA +
CC         H(+) + NADPH; Xref=Rhea:RHEA:23624, Rhea:RHEA-COMP:13339, Rhea:RHEA-
CC         COMP:13887, ChEBI:CHEBI:15378, ChEBI:CHEBI:57783, ChEBI:CHEBI:58349,
CC         ChEBI:CHEBI:65315, ChEBI:CHEBI:74443;
CC         Evidence={ECO:0000250|UniProtKB:P33371};
CC   -!- COFACTOR:
CC       Name=FMN; Xref=ChEBI:CHEBI:58210;
CC         Evidence={ECO:0000250|UniProtKB:P33371};
CC   -!- SIMILARITY: Belongs to the Dus family. {ECO:0000305}.
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DR   EMBL; CP000029; AAW53267.1; -; Genomic_DNA.
DR   RefSeq; WP_001830546.1; NC_002976.3.
DR   AlphaFoldDB; Q5HKD5; -.
DR   SMR; Q5HKD5; -.
DR   STRING; 176279.SERP2413; -.
DR   EnsemblBacteria; AAW53267; AAW53267; SERP2413.
DR   KEGG; ser:SERP2413; -.
DR   eggNOG; COG0042; Bacteria.
DR   HOGENOM; CLU_013299_0_3_9; -.
DR   OMA; LIYPYVD; -.
DR   OrthoDB; 1710586at2; -.
DR   Proteomes; UP000000531; Chromosome.
DR   GO; GO:0050660; F:flavin adenine dinucleotide binding; IEA:InterPro.
DR   GO; GO:0000049; F:tRNA binding; IEA:UniProtKB-KW.
DR   GO; GO:0017150; F:tRNA dihydrouridine synthase activity; IEA:InterPro.
DR   CDD; cd02801; DUS_like_FMN; 1.
DR   Gene3D; 1.10.1200.80; -; 1.
DR   Gene3D; 3.20.20.70; -; 1.
DR   InterPro; IPR013785; Aldolase_TIM.
DR   InterPro; IPR035587; DUS-like_FMN-bd.
DR   InterPro; IPR001269; DUS_fam.
DR   InterPro; IPR024036; tRNA-dHydroUridine_Synthase_C.
DR   InterPro; IPR018517; tRNA_hU_synthase_CS.
DR   Pfam; PF01207; Dus; 1.
DR   PIRSF; PIRSF006621; Dus; 1.
DR   PROSITE; PS01136; UPF0034; 1.
PE   3: Inferred from homology;
KW   Flavoprotein; FMN; NADP; Oxidoreductase; Reference proteome; RNA-binding;
KW   tRNA processing; tRNA-binding.
FT   CHAIN           1..326
FT                   /note="Probable tRNA-dihydrouridine synthase"
FT                   /id="PRO_0000162149"
FT   ACT_SITE        105
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000250|UniProtKB:Q5SMC7"
FT   BINDING         18..20
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000250|UniProtKB:P33371"
FT   BINDING         143
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000250|UniProtKB:P33371"
FT   BINDING         208..210
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000250|UniProtKB:P33371"
FT   BINDING         232..233
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000250|UniProtKB:P33371"
SQ   SEQUENCE   326 AA;  37359 MW;  233B204723995461 CRC64;
     MKENFWSTLP RPFFILAPME DVTDIVFRHV VSEAARPDVF FTEFTNTESY CHPEGIHSVR
     GRLTFSDDEQ PMVAHIWGDK PEQFREMSIG LADMGFKGID LNMGCPVANV AKKGKGSGLI
     LRPETAAEII QASKAGGLPV SVKTRLGYYD IDEWRDWLKH VFEQDIANLS IHLRTRKEMS
     KVDAHWELIE AIKTLRDEIA PNTLLTINGD IPDRQTGLEL ANKYGIDGIM IGRGIFHNPF
     AFEKEPREHS SKELLGLLRL HLSLFEKYDK DEARHFKSLR RFFKIYVRGI RGASELRHQL
     MNTQSIAEAR ELLDTFEARM DARSEV
 
 
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