XPT_STRE4
ID XPT_STRE4 Reviewed; 193 AA.
AC C0MBC1;
DT 28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT 05-MAY-2009, sequence version 1.
DT 03-AUG-2022, entry version 63.
DE RecName: Full=Xanthine phosphoribosyltransferase {ECO:0000255|HAMAP-Rule:MF_01184};
DE Short=XPRTase {ECO:0000255|HAMAP-Rule:MF_01184};
DE EC=2.4.2.22 {ECO:0000255|HAMAP-Rule:MF_01184};
GN Name=xpt {ECO:0000255|HAMAP-Rule:MF_01184}; OrderedLocusNames=SEQ_1154;
OS Streptococcus equi subsp. equi (strain 4047).
OC Bacteria; Firmicutes; Bacilli; Lactobacillales; Streptococcaceae;
OC Streptococcus.
OX NCBI_TaxID=553482;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=4047;
RX PubMed=19325880; DOI=10.1371/journal.ppat.1000346;
RA Holden M.T.G., Heather Z., Paillot R., Steward K.F., Webb K., Ainslie F.,
RA Jourdan T., Bason N.C., Holroyd N.E., Mungall K., Quail M.A., Sanders M.,
RA Simmonds M., Willey D., Brooks K., Aanensen D.M., Spratt B.G., Jolley K.A.,
RA Maiden M.C.J., Kehoe M., Chanter N., Bentley S.D., Robinson C.,
RA Maskell D.J., Parkhill J., Waller A.S.;
RT "Genomic evidence for the evolution of Streptococcus equi: host
RT restriction, increased virulence, and genetic exchange with human
RT pathogens.";
RL PLoS Pathog. 5:E1000346-E1000346(2009).
CC -!- FUNCTION: Converts the preformed base xanthine, a product of nucleic
CC acid breakdown, to xanthosine 5'-monophosphate (XMP), so it can be
CC reused for RNA or DNA synthesis. {ECO:0000255|HAMAP-Rule:MF_01184}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=diphosphate + XMP = 5-phospho-alpha-D-ribose 1-diphosphate +
CC xanthine; Xref=Rhea:RHEA:10800, ChEBI:CHEBI:17712, ChEBI:CHEBI:33019,
CC ChEBI:CHEBI:57464, ChEBI:CHEBI:58017; EC=2.4.2.22;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01184};
CC -!- PATHWAY: Purine metabolism; XMP biosynthesis via salvage pathway; XMP
CC from xanthine: step 1/1. {ECO:0000255|HAMAP-Rule:MF_01184}.
CC -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01184}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_01184}.
CC -!- SIMILARITY: Belongs to the purine/pyrimidine phosphoribosyltransferase
CC family. Xpt subfamily. {ECO:0000255|HAMAP-Rule:MF_01184}.
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DR EMBL; FM204883; CAW93841.1; -; Genomic_DNA.
DR RefSeq; WP_012679551.1; NC_012471.1.
DR AlphaFoldDB; C0MBC1; -.
DR SMR; C0MBC1; -.
DR EnsemblBacteria; CAW93841; CAW93841; SEQ_1154.
DR KEGG; seu:SEQ_1154; -.
DR HOGENOM; CLU_099015_0_0_9; -.
DR OMA; HQVDPVL; -.
DR OrthoDB; 1532478at2; -.
DR UniPathway; UPA00602; UER00658.
DR Proteomes; UP000001365; Chromosome.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0000310; F:xanthine phosphoribosyltransferase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0006166; P:purine ribonucleoside salvage; IEA:UniProtKB-UniRule.
DR GO; GO:0046110; P:xanthine metabolic process; IEA:InterPro.
DR GO; GO:0032265; P:XMP salvage; IEA:UniProtKB-UniPathway.
DR CDD; cd06223; PRTases_typeI; 1.
DR Gene3D; 3.40.50.2020; -; 1.
DR HAMAP; MF_01184; XPRTase; 1.
DR InterPro; IPR000836; PRibTrfase_dom.
DR InterPro; IPR029057; PRTase-like.
DR InterPro; IPR010079; Xanthine_PRibTrfase.
DR Pfam; PF00156; Pribosyltran; 1.
DR SUPFAM; SSF53271; SSF53271; 1.
DR TIGRFAMs; TIGR01744; XPRTase; 1.
PE 3: Inferred from homology;
KW Cytoplasm; Glycosyltransferase; Purine salvage; Transferase.
FT CHAIN 1..193
FT /note="Xanthine phosphoribosyltransferase"
FT /id="PRO_1000164454"
FT BINDING 20
FT /ligand="xanthine"
FT /ligand_id="ChEBI:CHEBI:17712"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01184"
FT BINDING 27
FT /ligand="xanthine"
FT /ligand_id="ChEBI:CHEBI:17712"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01184"
FT BINDING 128..132
FT /ligand="5-phospho-alpha-D-ribose 1-diphosphate"
FT /ligand_id="ChEBI:CHEBI:58017"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01184"
FT BINDING 156
FT /ligand="xanthine"
FT /ligand_id="ChEBI:CHEBI:17712"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01184"
SQ SEQUENCE 193 AA; 20931 MW; DF1FE5D6BAE78A36 CRC64;
MRLLEERILA DGTVLGETIL KVDQFLTHQV DYRLMKEIGR VFADQYADLG ITKVVTIEAS
GIAPAVYTAE ALEVPMIFAK KHKNITMTEG ILTAEVYSFT KQVTSTVSIA GGLLSKEDRV
LIIDDFLANG QAAKGLIDII HQAGAKAVGI GIVIEKSFQA GRQLLEDLGV EVTSLARIKH
FDNGIVSFLE ADA