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XPT_STAA9
ID   XPT_STAA9               Reviewed;         192 AA.
AC   A5IPW7;
DT   10-JUN-2008, integrated into UniProtKB/Swiss-Prot.
DT   26-JUN-2007, sequence version 1.
DT   03-AUG-2022, entry version 77.
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=SaurJH9_0435;
OS   Staphylococcus aureus (strain JH9).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Staphylococcaceae;
OC   Staphylococcus.
OX   NCBI_TaxID=359786;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=JH9;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C.,
RA   Glavina del Rio T., Hammon N., Israni S., Pitluck S., Chain P.,
RA   Malfatti S., Shin M., Vergez L., Schmutz J., Larimer F., Land M.,
RA   Hauser L., Kyrpides N., Kim E., Tomasz A., Richardson P.;
RT   "Complete sequence of chromosome of Staphylococcus aureus subsp. aureus
RT   JH9.";
RL   Submitted (MAY-2007) to the EMBL/GenBank/DDBJ databases.
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; CP000703; ABQ48240.1; -; Genomic_DNA.
DR   RefSeq; WP_000421411.1; NC_009487.1.
DR   AlphaFoldDB; A5IPW7; -.
DR   SMR; A5IPW7; -.
DR   KEGG; saj:SaurJH9_0435; -.
DR   HOGENOM; CLU_099015_0_0_9; -.
DR   OMA; HQVDPVL; -.
DR   UniPathway; UPA00602; UER00658.
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   SUPFAM; SSF53271; SSF53271; 1.
DR   TIGRFAMs; TIGR01744; XPRTase; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Glycosyltransferase; Purine salvage; Transferase.
FT   CHAIN           1..192
FT                   /note="Xanthine phosphoribosyltransferase"
FT                   /id="PRO_0000339744"
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   192 AA;  20926 MW;  8E569FE976C6BEC5 CRC64;
     MELLGQKVKE DGVVIDEKIL KVDGFLNHQI DAKLMNEVGR TFYEQFKDKG ITKILTIEAS
     GIAPAIMAAL HFDVPCLFAK KAKPSTLTDG YYETSIHSFT KNKTSTVIVS KEFLSEEDTV
     LIIDDFLANG DASLGLYDIA QQANAKTAGI GIVVEKSFQN GHQRLEEAGL TVSSLCKVAS
     LEGNKVTLVV EE
 
 
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