ID A0A0F7N1D7_9ACTN Unreviewed; 376 AA.
AC A0A0F7N1D7;
DT 22-JUL-2015, integrated into UniProtKB/TrEMBL.
DT 22-JUL-2015, sequence version 1.
DT 24-JAN-2024, entry version 23.
DE RecName: Full=tRNA-dihydrouridine synthase {ECO:0000256|PIRNR:PIRNR006621};
DE EC=1.3.1.- {ECO:0000256|PIRNR:PIRNR006621};
GN ORFNames=AA958_09075 {ECO:0000313|EMBL:AKH82355.1};
OS Streptomyces sp. CNQ-509.
OC Bacteria; Actinomycetota; Actinomycetes; Kitasatosporales;
OC Streptomycetaceae; Streptomyces.
OX NCBI_TaxID=444103 {ECO:0000313|EMBL:AKH82355.1, ECO:0000313|Proteomes:UP000034283};
RN [1] {ECO:0000313|EMBL:AKH82355.1, ECO:0000313|Proteomes:UP000034283}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=CNQ-509 {ECO:0000313|EMBL:AKH82355.1,
RC ECO:0000313|Proteomes:UP000034283};
RA Ruckert C., Albersmeier A., Leipoldt F., Winkler A., Zeyhle P.,
RA Kalinowski J., Heide L., Kaysser L.;
RT "Complete Genome Sequence of Streptomyces sp. CNQ-509, a Prolific Producer
RT of Meroterpenoid Chemistry.";
RL Submitted (MAY-2015) 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; CP011492; AKH82355.1; -; Genomic_DNA.
DR RefSeq; WP_047015702.1; NZ_CP011492.1.
DR AlphaFoldDB; A0A0F7N1D7; -.
DR STRING; 444103.AA958_09075; -.
DR KEGG; strc:AA958_09075; -.
DR PATRIC; fig|444103.5.peg.1912; -.
DR OrthoDB; 9764501at2; -.
DR Proteomes; UP000034283; 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:UP000034283};
KW RNA-binding {ECO:0000256|ARBA:ARBA00022884};
KW tRNA processing {ECO:0000256|ARBA:ARBA00022694,
KW ECO:0000256|PIRNR:PIRNR006621}.
FT DOMAIN 17..316
FT /note="DUS-like FMN-binding"
FT /evidence="ECO:0000259|Pfam:PF01207"
FT ACT_SITE 106
FT /note="Proton donor"
FT /evidence="ECO:0000256|PIRSR:PIRSR006621-1"
SQ SEQUENCE 376 AA; 40616 MW; FEDB489CDCE12A8C CRC64;
MSELQIGPHT VSPPVVLAPM AGITNAPFRT LCREFSGGRG LFVSEMITTR ALVERDAKTM
RLVHFDGTEK PRSIQLYGVD PVYTGRAARM IADEDLADHI DLNFGCPVPK VTRKGGGSAL
PYKRNLLRAI LREAVAGAGD LPVTMKMRKG IDDDHLTYLD AGRIAVEEGV TAIALHGRTA
AQHYGGTADW DAIARLKEHV PEIPVLGNGD IWSAADALRM VRETGCDGVV VGRGCLGRPW
LFGDLVAAFD GSSEPSARPA LKEVAGVMLR HAELLGQWLG DERRGVIDFR KHVPWYTKGF
SVGKELRHRM AMAGTLAELD DLLGTLDLDQ PWPEGAEGPR GRTAGRNKVV LPEGWLADPY
ECAQVDAAAE LDTSGG
//