ID A5CES9_ORITB Unreviewed; 322 AA.
AC A5CES9;
DT 12-JUN-2007, integrated into UniProtKB/TrEMBL.
DT 12-JUN-2007, sequence version 1.
DT 27-MAR-2024, entry version 87.
DE RecName: Full=tRNA-dihydrouridine synthase {ECO:0000256|PIRNR:PIRNR006621};
DE EC=1.3.1.- {ECO:0000256|PIRNR:PIRNR006621};
GN Name=duS {ECO:0000313|EMBL:CAM80734.1};
GN OrderedLocusNames=OTBS_1639 {ECO:0000313|EMBL:CAM80734.1};
OS Orientia tsutsugamushi (strain Boryong) (Rickettsia tsutsugamushi).
OC Bacteria; Pseudomonadota; Alphaproteobacteria; Rickettsiales;
OC Rickettsiaceae; Rickettsieae; Orientia.
OX NCBI_TaxID=357244 {ECO:0000313|EMBL:CAM80734.1, ECO:0000313|Proteomes:UP000001565};
RN [1] {ECO:0000313|EMBL:CAM80734.1, ECO:0000313|Proteomes:UP000001565}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Boryong {ECO:0000313|EMBL:CAM80734.1,
RC ECO:0000313|Proteomes:UP000001565};
RX PubMed=17483455; DOI=10.1073/pnas.0611553104;
RA Cho N.-H., Kim H.-R., Lee J.-H., Kim S.-Y., Kim J., Cha S., Kim S.-Y.,
RA Darby A.C., Fuxelius H.-H., Yin J., Kim J.H., Kim J., Lee S.J., Koh Y.-S.,
RA Jang W.-J., Park K.-H., Andersson S.G.E., Choi M.-S., Kim I.-S.;
RT "The Orientia tsutsugamushi genome reveals massive proliferation of
RT conjugative type IV secretion system and host-cell interaction genes.";
RL Proc. Natl. Acad. Sci. U.S.A. 104:7981-7986(2007).
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:0000256|ARBA:ARBA00002790,
CC ECO:0000256|PIRNR:PIRNR006621}.
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:0000256|ARBA:ARBA00001387};
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:0000256|ARBA:ARBA00001183};
CC -!- COFACTOR:
CC Name=FMN; Xref=ChEBI:CHEBI:58210;
CC Evidence={ECO:0000256|ARBA:ARBA00001917,
CC ECO:0000256|PIRNR:PIRNR006621};
CC -!- SIMILARITY: Belongs to the dus family. {ECO:0000256|PIRNR:PIRNR006621}.
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DR EMBL; AM494475; CAM80734.1; -; Genomic_DNA.
DR RefSeq; WP_011944985.1; NC_009488.1.
DR AlphaFoldDB; A5CES9; -.
DR KEGG; ots:OTBS_1639; -.
DR eggNOG; COG0042; Bacteria.
DR HOGENOM; CLU_013299_0_1_5; -.
DR Proteomes; UP000001565; Chromosome.
DR GO; GO:0050660; F:flavin adenine dinucleotide binding; IEA:InterPro.
DR GO; GO:0003723; F:RNA binding; IEA:UniProtKB-KW.
DR GO; GO:0017150; F:tRNA dihydrouridine synthase activity; IEA:InterPro.
DR CDD; cd02801; DUS_like_FMN; 1.
DR Gene3D; 3.20.20.70; Aldolase class I; 1.
DR InterPro; IPR013785; Aldolase_TIM.
DR InterPro; IPR035587; DUS-like_FMN-bd.
DR InterPro; IPR001269; DUS_fam.
DR InterPro; IPR004652; DusB-like.
DR InterPro; IPR024036; tRNA-dHydroUridine_Synthase_C.
DR InterPro; IPR018517; tRNA_hU_synthase_CS.
DR NCBIfam; TIGR00737; nifR3_yhdG; 1.
DR PANTHER; PTHR45846; TRNA-DIHYDROURIDINE(47) SYNTHASE [NAD(P)(+)]-LIKE; 1.
DR PANTHER; PTHR45846:SF1; TRNA-DIHYDROURIDINE(47) SYNTHASE [NAD(P)(+)]-LIKE; 1.
DR Pfam; PF01207; Dus; 1.
DR PIRSF; PIRSF006621; Dus; 1.
DR SUPFAM; SSF51395; FMN-linked oxidoreductases; 1.
DR PROSITE; PS01136; UPF0034; 1.
PE 3: Inferred from homology;
KW Flavoprotein {ECO:0000256|ARBA:ARBA00022630,
KW ECO:0000256|PIRNR:PIRNR006621};
KW FMN {ECO:0000256|ARBA:ARBA00022643, ECO:0000256|PIRNR:PIRNR006621};
KW NADP {ECO:0000256|ARBA:ARBA00022857};
KW Oxidoreductase {ECO:0000256|ARBA:ARBA00023002,
KW ECO:0000256|PIRNR:PIRNR006621};
KW Reference proteome {ECO:0000313|Proteomes:UP000001565};
KW RNA-binding {ECO:0000256|ARBA:ARBA00022884};
KW tRNA processing {ECO:0000256|ARBA:ARBA00022694,
KW ECO:0000256|PIRNR:PIRNR006621}.
FT DOMAIN 15..319
FT /note="DUS-like FMN-binding"
FT /evidence="ECO:0000259|Pfam:PF01207"
FT ACT_SITE 103
FT /note="Proton donor"
FT /evidence="ECO:0000256|PIRSR:PIRSR006621-1"
SQ SEQUENCE 322 AA; 35284 MW; D7606FCCF38359C9 CRC64;
MTIKIGNIEL SAPVILAPMS GVTDLPFRKL VKQFGAGLVV SEMVASRAMI QETRRSMMKS
AIIENDITGS CVQLAGCEPD VVADAAKMNQ DMGAQIIDIN FGCPAKKVVG GYAGSALMKD
ESLAAKILAE TVKSVSIPVT LKMRTGWDES CRNAHIIAKI AEDCGIQMIT VHGRTRCQFY
SGKSDWAFIR KVKESIKIPV VANGDITSVD DAIDCLRISG ADGVMVGRGA YGKPWLLSQI
SHYLAFQDYL PSPSLIEQKK IILNHYESML SYYGTEHGIK IARKHLGWYS KGLPNSTEFR
SKVTTITSVE QVQEIINQFF QL
//
