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Database: UniProt
Entry: A0A143XGD2_9BACT
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ID   A0A143XGD2_9BACT        Unreviewed;       340 AA.
AC   A0A143XGD2;
DT   08-JUN-2016, integrated into UniProtKB/TrEMBL.
DT   08-JUN-2016, sequence version 1.
DT   24-JAN-2024, entry version 20.
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:CVI66101.1};
GN   ORFNames=BN3659_00408 {ECO:0000313|EMBL:CVI66101.1};
OS   Alistipes sp. CHKCI003.
OC   Bacteria; Bacteroidota; Bacteroidia; Bacteroidales; Rikenellaceae;
OC   Alistipes.
OX   NCBI_TaxID=1780376 {ECO:0000313|EMBL:CVI66101.1, ECO:0000313|Proteomes:UP000198813};
RN   [1] {ECO:0000313|EMBL:CVI66101.1, ECO:0000313|Proteomes:UP000198813}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CHKC3 {ECO:0000313|EMBL:CVI66101.1};
RA   Oliw E.H.;
RL   Submitted (JAN-2016) to the EMBL/GenBank/DDBJ databases.
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; FCNT01000012; CVI66101.1; -; Genomic_DNA.
DR   AlphaFoldDB; A0A143XGD2; -.
DR   STRING; 1780376.BN3659_00408; -.
DR   OrthoDB; 9764501at2; -.
DR   Proteomes; UP000198813; Unassembled WGS sequence.
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:UP000198813};
KW   RNA-binding {ECO:0000256|ARBA:ARBA00022884};
KW   tRNA processing {ECO:0000256|ARBA:ARBA00022694,
KW   ECO:0000256|PIRNR:PIRNR006621}.
FT   DOMAIN          15..309
FT                   /note="DUS-like FMN-binding"
FT                   /evidence="ECO:0000259|Pfam:PF01207"
FT   ACT_SITE        101
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000256|PIRSR:PIRSR006621-1"
SQ   SEQUENCE   340 AA;  37807 MW;  35C38CF5B5CC8F72 CRC64;
     MKIAGIELGD RPLFLAPMED VTDPSFRYMC KRFGADVVYT EFISADGLIR DAAKSLAKLR
     FDDAERPVGI QIYGNRIEPM VEAARMAEAA GPDLVDINFG CPVKKIAGRG AGSGMMRDVP
     LMVEMTRRIV EAVRMPVTVK TRLGWDDESK NIEEIALRLQ DTGIAALTIH GRTRAQMYRG
     EADWTLIGAV KNNPAIRIPI IGNGDVDSGP KAREMFDRYG VDGVMIGRAT YGRPWIFREI
     KHFLSTGEVL PQPSVRERAA IAREHLAKSI EVKGEYVGVI EMRRHLSNYF KGLPDFKSTR
     LKLVTLTDIA ELFATIDSIA ERWGDFDASQ VVPAPLSHDL
//
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