ID   PYRE_STRA3              Reviewed;         209 AA.
AC   P65917; Q8DZQ3; Q8E5F1;
DT   11-OCT-2004, integrated into UniProtKB/Swiss-Prot.
DT   11-OCT-2004, sequence version 1.
DT   03-AUG-2022, entry version 97.
DE   RecName: Full=Orotate phosphoribosyltransferase {ECO:0000255|HAMAP-Rule:MF_01208};
DE            Short=OPRT {ECO:0000255|HAMAP-Rule:MF_01208};
DE            Short=OPRTase {ECO:0000255|HAMAP-Rule:MF_01208};
DE            EC=2.4.2.10 {ECO:0000255|HAMAP-Rule:MF_01208};
GN   Name=pyrE {ECO:0000255|HAMAP-Rule:MF_01208}; OrderedLocusNames=gbs1081;
OS   Streptococcus agalactiae serotype III (strain NEM316).
OC   Bacteria; Firmicutes; Bacilli; Lactobacillales; Streptococcaceae;
OC   Streptococcus.
OX   NCBI_TaxID=211110;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=NEM316;
RX   PubMed=12354221; DOI=10.1046/j.1365-2958.2002.03126.x;
RA   Glaser P., Rusniok C., Buchrieser C., Chevalier F., Frangeul L., Msadek T.,
RA   Zouine M., Couve E., Lalioui L., Poyart C., Trieu-Cuot P., Kunst F.;
RT   "Genome sequence of Streptococcus agalactiae, a pathogen causing invasive
RT   neonatal disease.";
RL   Mol. Microbiol. 45:1499-1513(2002).
CC   -!- FUNCTION: Catalyzes the transfer of a ribosyl phosphate group from 5-
CC       phosphoribose 1-diphosphate to orotate, leading to the formation of
CC       orotidine monophosphate (OMP). {ECO:0000255|HAMAP-Rule:MF_01208}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=diphosphate + orotidine 5'-phosphate = 5-phospho-alpha-D-
CC         ribose 1-diphosphate + orotate; Xref=Rhea:RHEA:10380,
CC         ChEBI:CHEBI:30839, ChEBI:CHEBI:33019, ChEBI:CHEBI:57538,
CC         ChEBI:CHEBI:58017; EC=2.4.2.10; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_01208};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01208};
CC   -!- PATHWAY: Pyrimidine metabolism; UMP biosynthesis via de novo pathway;
CC       UMP from orotate: step 1/2. {ECO:0000255|HAMAP-Rule:MF_01208}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01208}.
CC   -!- SIMILARITY: Belongs to the purine/pyrimidine phosphoribosyltransferase
CC       family. PyrE subfamily. {ECO:0000255|HAMAP-Rule:MF_01208}.
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DR   EMBL; AL766848; CAD46740.1; -; Genomic_DNA.
DR   RefSeq; WP_000362328.1; NC_004368.1.
DR   AlphaFoldDB; P65917; -.
DR   SMR; P65917; -.
DR   STRING; 211110.gbs1081; -.
DR   EnsemblBacteria; CAD46740; CAD46740; CAD46740.
DR   GeneID; 66885975; -.
DR   KEGG; san:pyrE; -.
DR   eggNOG; COG0461; Bacteria.
DR   HOGENOM; CLU_074878_1_1_9; -.
DR   OMA; ENPFTWA; -.
DR   UniPathway; UPA00070; UER00119.
DR   Proteomes; UP000000823; Chromosome.
DR   GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0004588; F:orotate phosphoribosyltransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0044205; P:'de novo' UMP biosynthetic process; IEA:UniProtKB-UniPathway.
DR   CDD; cd06223; PRTases_typeI; 1.
DR   Gene3D; 3.40.50.2020; -; 1.
DR   HAMAP; MF_01208; PyrE; 1.
DR   InterPro; IPR023031; OPRT.
DR   InterPro; IPR004467; Or_phspho_trans_dom.
DR   InterPro; IPR000836; PRibTrfase_dom.
DR   InterPro; IPR029057; PRTase-like.
DR   Pfam; PF00156; Pribosyltran; 1.
DR   SUPFAM; SSF53271; SSF53271; 1.
DR   TIGRFAMs; TIGR00336; pyrE; 1.
DR   PROSITE; PS00103; PUR_PYR_PR_TRANSFER; 1.
PE   3: Inferred from homology;
KW   Glycosyltransferase; Magnesium; Pyrimidine biosynthesis; Transferase.
FT   CHAIN           1..209
FT                   /note="Orotate phosphoribosyltransferase"
FT                   /id="PRO_0000110746"
FT   BINDING         96
FT                   /ligand="5-phospho-alpha-D-ribose 1-diphosphate"
FT                   /ligand_id="ChEBI:CHEBI:58017"
FT                   /ligand_note="ligand shared between dimeric partners"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01208"
FT   BINDING         100
FT                   /ligand="5-phospho-alpha-D-ribose 1-diphosphate"
FT                   /ligand_id="ChEBI:CHEBI:58017"
FT                   /ligand_note="ligand shared between dimeric partners"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01208"
FT   BINDING         102
FT                   /ligand="5-phospho-alpha-D-ribose 1-diphosphate"
FT                   /ligand_id="ChEBI:CHEBI:58017"
FT                   /ligand_note="ligand shared between dimeric partners"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01208"
FT   BINDING         122..130
FT                   /ligand="5-phospho-alpha-D-ribose 1-diphosphate"
FT                   /ligand_id="ChEBI:CHEBI:58017"
FT                   /ligand_note="ligand shared between dimeric partners"
FT                   /note="in other chain"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01208"
FT   BINDING         126
FT                   /ligand="orotate"
FT                   /ligand_id="ChEBI:CHEBI:30839"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01208"
SQ   SEQUENCE   209 AA;  23112 MW;  AE6061043EE47BD2 CRC64;
     MDLARQIAME LLDIQAVYLR PQQPFTWASG VKSPIYTDNR VTLSYPETRT LIENGFVKQI
     QKHFPNVDII AGTATAGIPH GAIIADKMNL PFAYIRSKAK DHGVGNQIEG RVYSGQKMVI
     IEDLISTGGS VLEAVTAAQS QGIEVLGVVA IFTYQLAKAE QAFREADIPL VTLTDYNQLI
     KVAKVNGYIT ADQLVLLKKF KEDQMNWQS