ID   PYRD_POLAQ              Reviewed;         344 AA.
AC   A4SWU5;
DT   20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT   15-MAY-2007, sequence version 1.
DT   04-NOV-2026, entry version 111.
DE   RecName: Full=Dihydroorotate dehydrogenase (quinone) {ECO:0000255|HAMAP-Rule:MF_00225};
DE            EC=1.3.5.2 {ECO:0000255|HAMAP-Rule:MF_00225};
DE   AltName: Full=DHOdehase {ECO:0000255|HAMAP-Rule:MF_00225};
DE            Short=DHOD {ECO:0000255|HAMAP-Rule:MF_00225};
DE            Short=DHODase {ECO:0000255|HAMAP-Rule:MF_00225};
DE   AltName: Full=Dihydroorotate oxidase {ECO:0000255|HAMAP-Rule:MF_00225};
GN   Name=pyrD {ECO:0000255|HAMAP-Rule:MF_00225};
GN   OrderedLocusNames=Pnuc_0741;
OS   Polynucleobacter asymbioticus (strain DSM 18221 / CIP 109841 /
OS   QLW-P1DMWA-1) (Polynucleobacter necessarius subsp. asymbioticus).
OC   Bacteria; Pseudomonadati; Pseudomonadota; Betaproteobacteria;
OC   Burkholderiales; Burkholderiaceae; Polynucleobacter.
OX   NCBI_TaxID=312153;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 18221 / CIP 109841 / QLW-P1DMWA-1;
RX   PubMed=22675600; DOI=10.4056/sigs.2395367;
RA   Meincke L., Copeland A., Lapidus A., Lucas S., Berry K.W., Del Rio T.G.,
RA   Hammon N., Dalin E., Tice H., Pitluck S., Richardson P., Bruce D.,
RA   Goodwin L., Han C., Tapia R., Detter J.C., Schmutz J., Brettin T.,
RA   Larimer F., Land M., Hauser L., Kyrpides N.C., Ivanova N., Goker M.,
RA   Woyke T., Wu Q.L., Pockl M., Hahn M.W., Klenk H.P.;
RT   "Complete genome sequence of Polynucleobacter necessarius subsp.
RT   asymbioticus type strain (QLW-P1DMWA-1(T)).";
RL   Stand. Genomic Sci. 6:74-83(2012).
CC   -!- FUNCTION: Catalyzes the conversion of dihydroorotate to orotate with
CC       quinone as electron acceptor. {ECO:0000255|HAMAP-Rule:MF_00225}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(S)-dihydroorotate + a quinone = orotate + a quinol;
CC         Xref=Rhea:RHEA:30187, ChEBI:CHEBI:24646, ChEBI:CHEBI:30839,
CC         ChEBI:CHEBI:30864, ChEBI:CHEBI:132124; EC=1.3.5.2;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00225};
CC   -!- COFACTOR:
CC       Name=FMN; Xref=ChEBI:CHEBI:58210; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00225};
CC       Note=Binds 1 FMN per subunit. {ECO:0000255|HAMAP-Rule:MF_00225};
CC   -!- PATHWAY: Pyrimidine metabolism; UMP biosynthesis via de novo pathway;
CC       orotate from (S)-dihydroorotate (quinone route): step 1/1.
CC       {ECO:0000255|HAMAP-Rule:MF_00225}.
CC   -!- SUBUNIT: Monomer. {ECO:0000255|HAMAP-Rule:MF_00225}.
CC   -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000255|HAMAP-Rule:MF_00225};
CC       Peripheral membrane protein {ECO:0000255|HAMAP-Rule:MF_00225}.
CC   -!- SIMILARITY: Belongs to the dihydroorotate dehydrogenase family. Type 2
CC       subfamily. {ECO:0000255|HAMAP-Rule:MF_00225}.
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DR   EMBL; CP000655; ABP33959.1; -; Genomic_DNA.
DR   RefSeq; WP_011902584.1; NC_009379.1.
DR   AlphaFoldDB; A4SWU5; -.
DR   SMR; A4SWU5; -.
DR   GeneID; 31481102; -.
DR   KEGG; pnu:Pnuc_0741; -.
DR   eggNOG; COG0167; Bacteria.
DR   HOGENOM; CLU_013640_2_0_4; -.
DR   OMA; AAACIDH; -.
DR   UniPathway; UPA00070; UER00946.
DR   Proteomes; UP000000231; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:InterPro.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0106430; F:dihydroorotate dehydrogenase (quinone) activity; IEA:UniProtKB-EC.
DR   GO; GO:0006207; P:'de novo' pyrimidine nucleobase biosynthetic process; IEA:InterPro.
DR   GO; GO:0044205; P:'de novo' UMP biosynthetic process; IEA:UniProtKB-UniRule.
DR   CDD; cd04738; DHOD_2_like; 1.
DR   Gene3D; 3.20.20.70; Aldolase class I; 1.
DR   HAMAP; MF_00225; DHO_dh_type2; 1.
DR   InterPro; IPR013785; Aldolase_TIM.
DR   InterPro; IPR050074; DHO_dehydrogenase.
DR   InterPro; IPR012135; Dihydroorotate_DH_1_2.
DR   InterPro; IPR005719; Dihydroorotate_DH_2.
DR   InterPro; IPR005720; Dihydroorotate_DH_cat.
DR   InterPro; IPR001295; Dihydroorotate_DH_CS.
DR   NCBIfam; NF003645; PRK05286.1-2; 1.
DR   NCBIfam; NF003646; PRK05286.1-4; 1.
DR   NCBIfam; NF003652; PRK05286.2-5; 1.
DR   NCBIfam; NF003644; pyrD; 1.
DR   NCBIfam; TIGR01036; pyrD_sub2; 1.
DR   PANTHER; PTHR48109:SF4; DIHYDROOROTATE DEHYDROGENASE (QUINONE), MITOCHONDRIAL; 1.
DR   PANTHER; PTHR48109; DIHYDROOROTATE DEHYDROGENASE (QUINONE), MITOCHONDRIAL-RELATED; 1.
DR   Pfam; PF01180; DHO_dh; 1.
DR   PIRSF; PIRSF000164; DHO_oxidase; 1.
DR   SUPFAM; SSF51395; FMN-linked oxidoreductases; 1.
DR   PROSITE; PS00911; DHODEHASE_1; 1.
DR   PROSITE; PS00912; DHODEHASE_2; 1.
PE   3: Inferred from homology;
KW   Cell membrane; Flavoprotein; FMN; Membrane; Oxidoreductase;
KW   Pyrimidine biosynthesis; Reference proteome.
FT   CHAIN           1..344
FT                   /note="Dihydroorotate dehydrogenase (quinone)"
FT                   /id="PRO_0000336481"
FT   ACT_SITE        180
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
FT   BINDING         64..68
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
FT   BINDING         68
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
FT   BINDING         88
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
FT   BINDING         113..117
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
FT   BINDING         144
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
FT   BINDING         177
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
FT   BINDING         177
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
FT   BINDING         182
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
FT   BINDING         222
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
FT   BINDING         250
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
FT   BINDING         251..252
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
FT   BINDING         273
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
FT   BINDING         302
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
FT   BINDING         323..324
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
SQ   SEQUENCE   344 AA;  37461 MW;  9F55F3A130DFE4D5 CRC64;
     MIDRYSLLRP WLFCLDPEQA HNLTLKNLDR AQRFGLLQRL VSKPIADPQN LCGIEFPNPV
     GLAAGLDKDG KHIDSLAALG FGFLEIGTVT PRPQAGNPKP RMFRLPQAEA IINRMGFNND
     GVEACVSRVR QSIFWQRGGV LGLNIGKNAI TPIEDAASDY IAAMEAVYEI ATYITVNISS
     PNTQNLRALQ GEDMLRSLLR SLDDARKRLS DRYGVRKPLF LKIAPDLDQN DIHLIADLLM
     EFNIDAVIAT NTTISREAVT GMQYGEETGG LSGAPVRIAS NIVIRALKAR LGVQLPIIGV
     GGILSGADAR EKIMAGASLV QLYSGLIYKG PDLVSECAKA LRQS
//