ID   PYRD_AERS4              Reviewed;         336 AA.
AC   A4SME2;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   15-MAY-2007, sequence version 1.
DT   10-JUN-2026, entry version 100.
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=ASA_1993;
OS   Aeromonas salmonicida (strain A449).
OC   Bacteria; Pseudomonadati; Pseudomonadota; Gammaproteobacteria;
OC   Aeromonadales; Aeromonadaceae; Aeromonas.
OX   NCBI_TaxID=382245;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=A449;
RX   PubMed=18801193; DOI=10.1186/1471-2164-9-427;
RA   Reith M.E., Singh R.K., Curtis B., Boyd J.M., Bouevitch A., Kimball J.,
RA   Munholland J., Murphy C., Sarty D., Williams J., Nash J.H., Johnson S.C.,
RA   Brown L.L.;
RT   "The genome of Aeromonas salmonicida subsp. salmonicida A449: insights into
RT   the evolution of a fish pathogen.";
RL   BMC Genomics 9:427-427(2008).
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; CP000644; ABO90064.1; -; Genomic_DNA.
DR   RefSeq; WP_005315654.1; NC_009348.1.
DR   AlphaFoldDB; A4SME2; -.
DR   SMR; A4SME2; -.
DR   STRING; 29491.GCA_000820065_03867; -.
DR   GeneID; 79879862; -.
DR   KEGG; asa:ASA_1993; -.
DR   eggNOG; COG0167; Bacteria.
DR   HOGENOM; CLU_013640_2_0_6; -.
DR   UniPathway; UPA00070; UER00946.
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   FunFam; 3.20.20.70:FF:000028; Dihydroorotate dehydrogenase (quinone); 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; NF003644; PRK05286.1-1; 1.
DR   NCBIfam; NF003645; PRK05286.1-2; 1.
DR   NCBIfam; NF003646; PRK05286.1-4; 1.
DR   NCBIfam; NF003652; PRK05286.2-5; 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.
FT   CHAIN           1..336
FT                   /note="Dihydroorotate dehydrogenase (quinone)"
FT                   /id="PRO_1000024148"
FT   ACT_SITE        175
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
FT   BINDING         62..66
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
FT   BINDING         66
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
FT   BINDING         86
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
FT   BINDING         111..115
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
FT   BINDING         139
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
FT   BINDING         172
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
FT   BINDING         172
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
FT   BINDING         177
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
FT   BINDING         217
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
FT   BINDING         245
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
FT   BINDING         246..247
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
FT   BINDING         268
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
FT   BINDING         297
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
FT   BINDING         318..319
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00225"
SQ   SEQUENCE   336 AA;  36411 MW;  EC003C32D9230911 CRC64;
     MLYPLARHFL FKFNPEQAHD LSIKYLPRLL GTPLDCFFRH SLPKRPVTVM GLYFANPVGL
     AAGLDKDGEC IDAFGAMGFG FIEVGTVTPK PQSGNDKPRL FRVIPAEGII NRMGFNNKGV
     DHLVAQVKKA KYQGVIGINI GKNKDTPIEQ GKDDYLICMD KVYDHAGYIA VNISSPNTPG
     LRSLQYGDAL DELLAALKVR QQELAAQYKK YVPLAVKIAP DLSLDEINQV AASLIKNGID
     GVIATNTTLD REMIYDMPHA GEAGGLSGRP LQHKSTEVIR QLAKALDGAL PIIGVGGIDS
     AMAAREKLAA GASLVQIYSG FIYKGPSLVK EIVTHI
//