ID A0A495ACS4_9BACI Unreviewed; 251 AA.
AC A0A495ACS4;
DT 05-JUN-2019, integrated into UniProtKB/TrEMBL.
DT 05-JUN-2019, sequence version 1.
DT 18-JUN-2025, entry version 24.
DE RecName: Full=Dihydroorotate dehydrogenase B (NAD(+)), electron transfer subunit {ECO:0000256|ARBA:ARBA00069792, ECO:0000256|HAMAP-Rule:MF_01211};
DE AltName: Full=Dihydroorotate oxidase B, electron transfer subunit {ECO:0000256|ARBA:ARBA00082223, ECO:0000256|HAMAP-Rule:MF_01211};
GN Name=pyrK {ECO:0000256|HAMAP-Rule:MF_01211};
GN ORFNames=D8M06_01040 {ECO:0000313|EMBL:RKQ37420.1};
OS Oceanobacillus halophilus.
OC Bacteria; Bacillati; Bacillota; Bacilli; Bacillales; Bacillaceae;
OC Oceanobacillus.
OX NCBI_TaxID=930130 {ECO:0000313|EMBL:RKQ37420.1, ECO:0000313|Proteomes:UP000269301};
RN [1] {ECO:0000313|EMBL:RKQ37420.1, ECO:0000313|Proteomes:UP000269301}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 23996 {ECO:0000313|EMBL:RKQ37420.1,
RC ECO:0000313|Proteomes:UP000269301};
RX PubMed=26869142; DOI=.1099/ijsem.0.000952;
RA Amoozegar M.A., Bagheri M., Makhdoumi A., Nikou M.M., Fazeli S.A.S.,
RA Schumann P., Sproer C., Sanchez-Porro C., Ventosa A.;
RT "Oceanobacillus halophilus sp. nov., a novel moderately halophilic
RT bacterium from a hypersaline lake.";
RL Int. J. Syst. Evol. Microbiol. 66:1317-1322(2016).
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:0000256|HAMAP-
CC Rule:MF_01211}.
CC -!- COFACTOR:
CC Name=FAD; Xref=ChEBI:CHEBI:57692;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_01211,
CC ECO:0000256|PIRSR:PIRSR006816-1};
CC Note=Binds 1 FAD per subunit. {ECO:0000256|HAMAP-Rule:MF_01211,
CC ECO:0000256|PIRSR:PIRSR006816-1};
CC -!- COFACTOR:
CC Name=[2Fe-2S] cluster; Xref=ChEBI:CHEBI:190135;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_01211};
CC Note=Binds 1 [2Fe-2S] cluster per subunit. {ECO:0000256|HAMAP-
CC Rule:MF_01211};
CC -!- COFACTOR:
CC Name=[2Fe-2S] cluster; Xref=ChEBI:CHEBI:190135;
CC Evidence={ECO:0000256|PIRSR:PIRSR006816-2};
CC Note=Binds 1 [2Fe-2S] cluster per subunit.
CC {ECO:0000256|PIRSR:PIRSR006816-2};
CC -!- PATHWAY: Pyrimidine metabolism; UMP biosynthesis via de novo pathway;
CC orotate from (S)-dihydroorotate (NAD(+) route): step 1/1.
CC {ECO:0000256|ARBA:ARBA00004715, ECO:0000256|HAMAP-Rule:MF_01211}.
CC -!- SUBUNIT: Heterotetramer of 2 PyrK and 2 PyrD type B subunits.
CC {ECO:0000256|ARBA:ARBA00011669, ECO:0000256|HAMAP-Rule:MF_01211}.
CC -!- SIMILARITY: Belongs to the PyrK family. {ECO:0000256|ARBA:ARBA00006422,
CC ECO:0000256|HAMAP-Rule:MF_01211}.
CC -!- CAUTION: Lacks conserved residue(s) required for the propagation of
CC feature annotation. {ECO:0000256|HAMAP-Rule:MF_01211}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:RKQ37420.1}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; RBZP01000001; RKQ37420.1; -; Genomic_DNA.
DR RefSeq; WP_121202500.1; NZ_RBZP01000001.1.
DR AlphaFoldDB; A0A495ACS4; -.
DR OrthoDB; 9778346at2; -.
DR UniPathway; UPA00070; UER00945.
DR Proteomes; UP000269301; Unassembled WGS sequence.
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:0016491; F:oxidoreductase activity; IEA:InterPro.
DR GO; GO:0044205; P:'de novo' UMP biosynthetic process; IEA:UniProtKB-UniRule.
DR CDD; cd06218; DHOD_e_trans; 1.
DR FunFam; 2.10.240.10:FF:000001; Dihydroorotate dehydrogenase B (NAD(+)), electron transfer subunit; 1.
DR Gene3D; 2.10.240.10; Dihydroorotate dehydrogenase, electron transfer subunit; 1.
DR Gene3D; 3.40.50.80; Nucleotide-binding domain of ferredoxin-NADP reductase (FNR) module; 1.
DR Gene3D; 2.40.30.10; Translation factors; 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; IPR050353; PyrK_electron_transfer.
DR InterPro; IPR017938; Riboflavin_synthase-like_b-brl.
DR NCBIfam; NF000799; PRK00054.1-4; 1.
DR PANTHER; PTHR43513; DIHYDROOROTATE DEHYDROGENASE B (NAD(+)), ELECTRON TRANSFER SUBUNIT; 1.
DR PANTHER; PTHR43513:SF3; DIHYDROOROTATE DEHYDROGENASE B (NAD(+)), ELECTRON TRANSFER SUBUNIT-RELATED; 1.
DR Pfam; PF10418; DHODB_Fe-S_bind; 1.
DR Pfam; PF00175; NAD_binding_1; 1.
DR PIRSF; PIRSF006816; Cyc3_hyd_g; 1.
DR PRINTS; PR00409; PHDIOXRDTASE.
DR SUPFAM; SSF52343; Ferredoxin reductase-like, C-terminal NADP-linked domain; 1.
DR SUPFAM; SSF63380; Riboflavin synthase domain-like; 1.
DR PROSITE; PS51384; FAD_FR; 1.
PE 3: Inferred from homology;
KW 2Fe-2S {ECO:0000256|ARBA:ARBA00022714, ECO:0000256|HAMAP-Rule:MF_01211};
KW Electron transport {ECO:0000256|ARBA:ARBA00022982, ECO:0000256|HAMAP-
KW Rule:MF_01211};
KW FAD {ECO:0000256|ARBA:ARBA00022827, ECO:0000256|HAMAP-Rule:MF_01211};
KW Flavoprotein {ECO:0000256|ARBA:ARBA00022630, ECO:0000256|HAMAP-
KW Rule:MF_01211};
KW Iron {ECO:0000256|ARBA:ARBA00023004, ECO:0000256|HAMAP-Rule:MF_01211};
KW Iron-sulfur {ECO:0000256|ARBA:ARBA00023014, ECO:0000256|HAMAP-
KW Rule:MF_01211};
KW Metal-binding {ECO:0000256|HAMAP-Rule:MF_01211,
KW ECO:0000256|PIRSR:PIRSR006816-2};
KW Pyrimidine biosynthesis {ECO:0000256|ARBA:ARBA00022975, ECO:0000256|HAMAP-
KW Rule:MF_01211}; Reference proteome {ECO:0000313|Proteomes:UP000269301};
KW Transport {ECO:0000256|ARBA:ARBA00022448, ECO:0000256|HAMAP-Rule:MF_01211}.
FT DOMAIN 2..99
FT /note="FAD-binding FR-type"
FT /evidence="ECO:0000259|PROSITE:PS51384"
FT BINDING 50..53
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01211,
FT ECO:0000256|PIRSR:PIRSR006816-1"
FT BINDING 74..75
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01211,
FT ECO:0000256|PIRSR:PIRSR006816-1"
FT BINDING 216
FT /ligand="[2Fe-2S] cluster"
FT /ligand_id="ChEBI:CHEBI:190135"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01211,
FT ECO:0000256|PIRSR:PIRSR006816-2"
FT BINDING 221
FT /ligand="[2Fe-2S] cluster"
FT /ligand_id="ChEBI:CHEBI:190135"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01211,
FT ECO:0000256|PIRSR:PIRSR006816-2"
FT BINDING 224
FT /ligand="[2Fe-2S] cluster"
FT /ligand_id="ChEBI:CHEBI:190135"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01211,
FT ECO:0000256|PIRSR:PIRSR006816-2"
FT BINDING 238
FT /ligand="[2Fe-2S] cluster"
FT /ligand_id="ChEBI:CHEBI:190135"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01211,
FT ECO:0000256|PIRSR:PIRSR006816-2"
SQ SEQUENCE 251 AA; 27599 MW; 485AD4571172A015 CRC64;
MIKKEKMRVI SSRQVAKDTT EMVLQNTYIS ETSVPGQFLH IFLDGHTLRR PISIADINKD
RQTVTILFKK LGDGTEQLAK VTEGMLLDVL GPSGNGFDMC LEEGDTALLI GGGIGVPPMY
SLGKKYSERN IQVVSVLGFQ SKEYVFYEEK FKELGKTHIV TNDGSYGAKG FVTDVLCKVR
GFDHYYSCGP IPMLKSVKNT LEGKRGSISL EERMGCGIGA CYACVVPAQT EEGYKKICSD
GPVFDVLEVV L
//
