ID   PYRDB_LISMH             Reviewed;         304 AA.
AC   B8DDR9;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   03-MAR-2009, sequence version 1.
DT   03-AUG-2022, entry version 66.
DE   RecName: Full=Dihydroorotate dehydrogenase B (NAD(+)), catalytic subunit;
DE            Short=DHOD B;
DE            Short=DHODase B;
DE            Short=DHOdehase B;
DE            EC=1.3.1.14;
DE   AltName: Full=Dihydroorotate oxidase B;
DE   AltName: Full=Orotate reductase (NADH);
GN   Name=pyrD; OrderedLocusNames=LMHCC_0723;
OS   Listeria monocytogenes serotype 4a (strain HCC23).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Listeriaceae; Listeria.
OX   NCBI_TaxID=552536;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=HCC23;
RX   PubMed=21602330; DOI=10.1128/jb.05236-11;
RA   Steele C.L., Donaldson J.R., Paul D., Banes M.M., Arick T., Bridges S.M.,
RA   Lawrence M.L.;
RT   "Genome sequence of lineage III Listeria monocytogenes strain HCC23.";
RL   J. Bacteriol. 193:3679-3680(2011).
CC   -!- FUNCTION: Catalyzes the conversion of dihydroorotate to orotate with
CC       NAD(+) as electron acceptor. {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(S)-dihydroorotate + NAD(+) = H(+) + NADH + orotate;
CC         Xref=Rhea:RHEA:13513, ChEBI:CHEBI:15378, ChEBI:CHEBI:30839,
CC         ChEBI:CHEBI:30864, ChEBI:CHEBI:57540, ChEBI:CHEBI:57945; EC=1.3.1.14;
CC   -!- COFACTOR:
CC       Name=FMN; Xref=ChEBI:CHEBI:58210; Evidence={ECO:0000250};
CC       Note=Binds 1 FMN per subunit. {ECO:0000250};
CC   -!- PATHWAY: Pyrimidine metabolism; UMP biosynthesis via de novo pathway;
CC       orotate from (S)-dihydroorotate (NAD(+) route): step 1/1.
CC   -!- SUBUNIT: Heterotetramer of 2 PyrK and 2 PyrD type B subunits.
CC       {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the dihydroorotate dehydrogenase family. Type 1
CC       subfamily. {ECO:0000305}.
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DR   EMBL; CP001175; ACK39078.1; -; Genomic_DNA.
DR   RefSeq; WP_003733086.1; NC_011660.1.
DR   AlphaFoldDB; B8DDR9; -.
DR   SMR; B8DDR9; -.
DR   KEGG; lmh:LMHCC_0723; -.
DR   HOGENOM; CLU_042042_0_0_9; -.
DR   OMA; SCPHAKG; -.
DR   UniPathway; UPA00070; UER00945.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0004152; F:dihydroorotate dehydrogenase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0004589; F:orotate reductase (NADH) 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-UniPathway.
DR   CDD; cd04740; DHOD_1B_like; 1.
DR   Gene3D; 3.20.20.70; -; 1.
DR   HAMAP; MF_00224; DHO_dh_type1; 1.
DR   InterPro; IPR013785; Aldolase_TIM.
DR   InterPro; IPR033888; DHOD_1B.
DR   InterPro; IPR005720; Dihydroorotate_DH.
DR   InterPro; IPR024920; Dihydroorotate_DH_1.
DR   InterPro; IPR012135; Dihydroorotate_DH_1_2.
DR   InterPro; IPR001295; Dihydroorotate_DH_CS.
DR   Pfam; PF01180; DHO_dh; 1.
DR   PIRSF; PIRSF000164; DHO_oxidase; 1.
DR   TIGRFAMs; TIGR01037; pyrD_sub1_fam; 1.
DR   PROSITE; PS00911; DHODEHASE_1; 1.
DR   PROSITE; PS00912; DHODEHASE_2; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Flavoprotein; FMN; NAD; Oxidoreductase; Pyrimidine biosynthesis.
FT   CHAIN           1..304
FT                   /note="Dihydroorotate dehydrogenase B (NAD(+)), catalytic
FT                   subunit"
FT                   /id="PRO_1000195050"
FT   ACT_SITE        130
FT                   /note="Nucleophile"
FT   BINDING         21
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000250"
FT   BINDING         45..46
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000250"
FT   BINDING         45
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         69..73
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         99
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000250"
FT   BINDING         127
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000250"
FT   BINDING         127
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         165
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000250"
FT   BINDING         191
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000250"
FT   BINDING         192..193
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         217
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000250"
FT   BINDING         243..244
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000250"
FT   BINDING         265..266
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   304 AA;  32237 MW;  D4E208644858218F CRC64;
     MNRLAVEIPG LSLKNPIMPA SGCFGFGQEY SKYYDLNELG AIMAKAVTPE PRLGNPTPRV
     AETASGMLNA IGLQNPGLEH VLAHELPFLE QFETPIIANV AGATEDDYVQ VCARIGESKA
     VKAIELNISC PNVKHGGIAF GTDPEVAHRL TKAVKNVATV PVYVKLSPNV ADIVSIAQAI
     EAAGADGLTM INTLLGMRID LKTRKPIIAN GTGGLSGPAI KPVAIRMIHQ VRAVSNIPII
     GMGGVQTVDD VLEFLIAGAD AVAVGTMNFT DPFICPKLIS ELPKRMDELG ISSLQELKKE
     RANQ