PYRDB_BACFN
ID PYRDB_BACFN Reviewed; 303 AA.
AC Q5LCI2;
DT 15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT 21-JUN-2005, sequence version 1.
DT 03-AUG-2022, entry version 100.
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=BF2483;
OS Bacteroides fragilis (strain ATCC 25285 / DSM 2151 / CCUG 4856 / JCM 11019
OS / NCTC 9343 / Onslow).
OC Bacteria; Bacteroidetes; Bacteroidia; Bacteroidales; Bacteroidaceae;
OC Bacteroides.
OX NCBI_TaxID=272559;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 25285 / DSM 2151 / CCUG 4856 / JCM 11019 / NCTC 9343 / Onslow;
RX PubMed=15746427; DOI=10.1126/science.1107008;
RA Cerdeno-Tarraga A.-M., Patrick S., Crossman L.C., Blakely G., Abratt V.,
RA Lennard N., Poxton I., Duerden B., Harris B., Quail M.A., Barron A.,
RA Clark L., Corton C., Doggett J., Holden M.T.G., Larke N., Line A., Lord A.,
RA Norbertczak H., Ormond D., Price C., Rabbinowitsch E., Woodward J.,
RA Barrell B.G., Parkhill J.;
RT "Extensive DNA inversions in the B. fragilis genome control variable gene
RT expression.";
RL Science 307:1463-1465(2005).
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; CR626927; CAH08183.1; -; Genomic_DNA.
DR RefSeq; WP_005787859.1; NC_003228.3.
DR AlphaFoldDB; Q5LCI2; -.
DR SMR; Q5LCI2; -.
DR STRING; 272559.BF9343_2402; -.
DR PRIDE; Q5LCI2; -.
DR EnsemblBacteria; CAH08183; CAH08183; BF9343_2402.
DR KEGG; bfs:BF9343_2402; -.
DR eggNOG; COG0167; Bacteria.
DR HOGENOM; CLU_042042_0_0_10; -.
DR OMA; SCPHAKG; -.
DR OrthoDB; 1109542at2; -.
DR UniPathway; UPA00070; UER00945.
DR Proteomes; UP000006731; Chromosome.
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;
KW Reference proteome.
FT CHAIN 1..303
FT /note="Dihydroorotate dehydrogenase B (NAD(+)), catalytic
FT subunit"
FT /id="PRO_1000024127"
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 303 AA; 32332 MW; 92360403BBB5F984 CRC64;
MADLSVNIGK LQMKNPVMTA SGTFGYGEEF ADFIDITRIG GIIVKGTTLH KREGNPYPRM
AETPSGMLNA VGLQNKGVEY FSNHIYPRIK DIQTHMIVNV SGSAIEDYVK TAEIINELDK
IPAIELNISC PNVKQGGMAF GVTTKGVSEV VQAVRSAYKK TLIVKLSPNV TDIAEMARAA
EANGADSVSL INTLLGMAID AERKRPILST VTGGMSGAAV KPIALRMVWQ VAKAVNIPVI
GLGGIMNWKD AVEFMLAGAS AIQIGTANFI DPAITIKVID GINDYLERHG CKSVSEIIGA
LEV
