ID   PYRK_PYRFU              Reviewed;         247 AA.
AC   P58888;
DT   11-JUL-2002, integrated into UniProtKB/Swiss-Prot.
DT   11-JUL-2002, sequence version 1.
DT   03-AUG-2022, entry version 112.
DE   RecName: Full=Probable dihydroorotate dehydrogenase B (NAD(+)), electron transfer subunit {ECO:0000255|HAMAP-Rule:MF_01211};
DE   AltName: Full=Dihydroorotate oxidase B, electron transfer subunit {ECO:0000255|HAMAP-Rule:MF_01211};
GN   Name=pyrK {ECO:0000255|HAMAP-Rule:MF_01211}; OrderedLocusNames=PF0188;
OS   Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1).
OC   Archaea; Euryarchaeota; Thermococci; Thermococcales; Thermococcaceae;
OC   Pyrococcus.
OX   NCBI_TaxID=186497;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 43587 / DSM 3638 / JCM 8422 / Vc1;
RX   PubMed=10430560; DOI=10.1093/genetics/152.4.1299;
RA   Maeder D.L., Weiss R.B., Dunn D.M., Cherry J.L., Gonzalez J.M.,
RA   DiRuggiero J., Robb F.T.;
RT   "Divergence of the hyperthermophilic archaea Pyrococcus furiosus and P.
RT   horikoshii inferred from complete genomic sequences.";
RL   Genetics 152:1299-1305(1999).
CC   -!- FUNCTION: Responsible for channeling the electrons from the oxidation
CC       of dihydroorotate from the FMN redox center in the PyrD type B subunit
CC       to the ultimate electron acceptor NAD(+). {ECO:0000255|HAMAP-
CC       Rule:MF_01211}.
CC   -!- COFACTOR:
CC       Name=[2Fe-2S] cluster; Xref=ChEBI:CHEBI:190135;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01211};
CC       Note=Binds 1 [2Fe-2S] cluster per subunit. {ECO:0000255|HAMAP-
CC       Rule:MF_01211};
CC   -!- COFACTOR:
CC       Name=FAD; Xref=ChEBI:CHEBI:57692;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01211};
CC       Note=Binds 1 FAD per subunit. {ECO:0000255|HAMAP-Rule:MF_01211};
CC   -!- PATHWAY: Pyrimidine metabolism; UMP biosynthesis via de novo pathway;
CC       orotate from (S)-dihydroorotate (NAD(+) route): step 1/1.
CC       {ECO:0000255|HAMAP-Rule:MF_01211}.
CC   -!- SUBUNIT: Heterotetramer of 2 PyrK and 2 PyrD type B subunits.
CC       {ECO:0000255|HAMAP-Rule:MF_01211}.
CC   -!- SIMILARITY: Belongs to the PyrK family. {ECO:0000255|HAMAP-
CC       Rule:MF_01211}.
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DR   EMBL; AE009950; AAL80312.1; -; Genomic_DNA.
DR   RefSeq; WP_011011301.1; NZ_CP023154.1.
DR   AlphaFoldDB; P58888; -.
DR   SMR; P58888; -.
DR   STRING; 186497.PF0188; -.
DR   EnsemblBacteria; AAL80312; AAL80312; PF0188.
DR   GeneID; 41711979; -.
DR   KEGG; pfu:PF0188; -.
DR   PATRIC; fig|186497.12.peg.195; -.
DR   eggNOG; arCOG02199; Archaea.
DR   HOGENOM; CLU_003827_1_1_2; -.
DR   OMA; RYMKCGI; -.
DR   OrthoDB; 67226at2157; -.
DR   PhylomeDB; P58888; -.
DR   UniPathway; UPA00070; UER00945.
DR   Proteomes; UP000001013; Chromosome.
DR   GO; GO:0051537; F:2 iron, 2 sulfur cluster binding; IEA:UniProtKB-KW.
DR   GO; GO:0009055; F:electron transfer activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0050660; F:flavin adenine dinucleotide binding; IEA:InterPro.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0044205; P:'de novo' UMP biosynthetic process; IEA:UniProtKB-UniPathway.
DR   Gene3D; 2.10.240.10; -; 1.
DR   Gene3D; 3.40.50.80; -; 1.
DR   HAMAP; MF_01211; DHODB_Fe_S_bind; 1.
DR   InterPro; IPR012165; Cyt_c3_hydrogenase_gsu.
DR   InterPro; IPR037117; Dihydroorotate_DH_ele_sf.
DR   InterPro; IPR019480; Dihydroorotate_DH_Fe-S-bd.
DR   InterPro; IPR023455; Dihydroorotate_DHASE_ETsu.
DR   InterPro; IPR017927; FAD-bd_FR_type.
DR   InterPro; IPR039261; FNR_nucleotide-bd.
DR   InterPro; IPR001433; OxRdtase_FAD/NAD-bd.
DR   InterPro; IPR017938; Riboflavin_synthase-like_b-brl.
DR   Pfam; PF10418; DHODB_Fe-S_bind; 1.
DR   Pfam; PF00175; NAD_binding_1; 1.
DR   PIRSF; PIRSF006816; Cyc3_hyd_g; 1.
DR   SUPFAM; SSF52343; SSF52343; 1.
DR   SUPFAM; SSF63380; SSF63380; 1.
DR   PROSITE; PS00197; 2FE2S_FER_1; 1.
DR   PROSITE; PS51384; FAD_FR; 1.
PE   3: Inferred from homology;
KW   2Fe-2S; Electron transport; FAD; Flavoprotein; Iron; Iron-sulfur;
KW   Metal-binding; Pyrimidine biosynthesis; Reference proteome; Transport.
FT   CHAIN           1..247
FT                   /note="Probable dihydroorotate dehydrogenase B (NAD(+)),
FT                   electron transfer subunit"
FT                   /id="PRO_0000148380"
FT   DOMAIN          1..87
FT                   /note="FAD-binding FR-type"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01211"
FT   BINDING         201
FT                   /ligand="[2Fe-2S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:190135"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01211"
FT   BINDING         206
FT                   /ligand="[2Fe-2S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:190135"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01211"
FT   BINDING         209
FT                   /ligand="[2Fe-2S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:190135"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01211"
FT   BINDING         217
FT                   /ligand="[2Fe-2S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:190135"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01211"
SQ   SEQUENCE   247 AA;  27690 MW;  21AE5CD0CCBCC7C7 CRC64;
     MLRRVSIEET WEVAKNIKAF RLSEKLEFTP GQFIMLWLPG VEEKPLSLAD KNLIMVKKVG
     RFTNELFKLK EGDYVWIRGP YGHGFSGKGK SVALIAGGIG IPPIYALAKY GNFKRSILIY
     GARTKEEIAL PKDIESYVDE VIITTDDGSY GIKGFPTDVL MERRSEFDYV YACGPEIMLA
     KILEIMEFEN VEVSAERYMK CGIGVCGSCA LGPYLVCRDG PVFSGKQLIN TEFGKYSRTP
     DGRIKPL