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Protein

Xanthine phosphoribosyltransferase

Gene

xpt

Organism
Staphylococcus aureus (strain MRSA252)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Protein inferred from homologyi

Functioni

Converts the preformed base xanthine, a product of nucleic acid breakdown, to xanthosine 5'-monophosphate (XMP), so it can be reused for RNA or DNA synthesis.UniRule annotation

Catalytic activityi

XMP + diphosphate = 5-phospho-alpha-D-ribose 1-diphosphate + xanthine.UniRule annotation

Pathwayi: XMP biosynthesis via salvage pathway

This protein is involved in step 1 of the subpathway that synthesizes XMP from xanthine.UniRule annotation
Proteins known to be involved in this subpathway in this organism are:
  1. Xanthine phosphoribosyltransferase (xpt)
This subpathway is part of the pathway XMP biosynthesis via salvage pathway, which is itself part of Purine metabolism.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes XMP from xanthine, the pathway XMP biosynthesis via salvage pathway and in Purine metabolism.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Binding sitei20Xanthine; via amide nitrogen and carbonyl oxygenUniRule annotation1
Binding sitei27XanthineUniRule annotation1
Binding sitei156XanthineUniRule annotation1

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Glycosyltransferase, Transferase

Keywords - Biological processi

Purine salvage

Enzyme and pathway databases

UniPathwayiUPA00602; UER00658.

Names & Taxonomyi

Protein namesi
Recommended name:
Xanthine phosphoribosyltransferaseUniRule annotation (EC:2.4.2.22UniRule annotation)
Short name:
XPRTaseUniRule annotation
Gene namesi
Name:xptUniRule annotation
Ordered Locus Names:SAR0406
OrganismiStaphylococcus aureus (strain MRSA252)
Taxonomic identifieri282458 [NCBI]
Taxonomic lineageiBacteriaFirmicutesBacilliBacillalesStaphylococcaceaeStaphylococcus

Subcellular locationi

  • Cytoplasm UniRule annotation

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00003397451 – 192Xanthine phosphoribosyltransferaseAdd BLAST192

Interactioni

Subunit structurei

Homodimer.UniRule annotation

Structurei

3D structure databases

ProteinModelPortaliQ6GJQ9.
SMRiQ6GJQ9.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni128 – 1325-phospho-alpha-D-ribose 1-diphosphate bindingUniRule annotation5

Sequence similaritiesi

Belongs to the purine/pyrimidine phosphoribosyltransferase family. Xpt subfamily.UniRule annotation

Phylogenomic databases

HOGENOMiHOG000036777.
KOiK03816.
OMAiHQIDPEL.

Family and domain databases

CDDicd06223. PRTases_typeI. 1 hit.
Gene3Di3.40.50.2020. 1 hit.
HAMAPiMF_01184. XPRTase. 1 hit.
InterProiIPR000836. PRibTrfase_dom.
IPR029057. PRTase-like.
IPR010079. Xanthine_PRibTrfase.
[Graphical view]
PfamiPF00156. Pribosyltran. 1 hit.
[Graphical view]
SUPFAMiSSF53271. SSF53271. 1 hit.
TIGRFAMsiTIGR01744. XPRTase. 1 hit.

Sequencei

Sequence statusi: Complete.

Q6GJQ9-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MELLGQKVKE DGVVIDERIL KVDGFLNHQI DAKLMDEVGR TFYEQFKDKG
60 70 80 90 100
ITKILTIEAS GIAPAIMAAL HFDVPCLFAK KAKPSTLTDG YYETSIHSFT
110 120 130 140 150
KNKTSTVIVS KEFLSEEDTV LIIDDFLANG DASLGLYDIA QQANAKTAGI
160 170 180 190
GIVVEKSFQN GHQRLEEAGL TVSSLCKVAS LEGNKVTLVG EE
Length:192
Mass (Da):20,913
Last modified:July 19, 2004 - v1
Checksum:i32FAD49F7115451F
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
BX571856 Genomic DNA. Translation: CAG39430.1.
RefSeqiWP_000421416.1. NC_002952.2.

Genome annotation databases

EnsemblBacteriaiCAG39430; CAG39430; SAR0406.
KEGGisar:SAR0406.
PATRICi19544330. VBIStaAur71814_0415.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
BX571856 Genomic DNA. Translation: CAG39430.1.
RefSeqiWP_000421416.1. NC_002952.2.

3D structure databases

ProteinModelPortaliQ6GJQ9.
SMRiQ6GJQ9.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiCAG39430; CAG39430; SAR0406.
KEGGisar:SAR0406.
PATRICi19544330. VBIStaAur71814_0415.

Phylogenomic databases

HOGENOMiHOG000036777.
KOiK03816.
OMAiHQIDPEL.

Enzyme and pathway databases

UniPathwayiUPA00602; UER00658.

Family and domain databases

CDDicd06223. PRTases_typeI. 1 hit.
Gene3Di3.40.50.2020. 1 hit.
HAMAPiMF_01184. XPRTase. 1 hit.
InterProiIPR000836. PRibTrfase_dom.
IPR029057. PRTase-like.
IPR010079. Xanthine_PRibTrfase.
[Graphical view]
PfamiPF00156. Pribosyltran. 1 hit.
[Graphical view]
SUPFAMiSSF53271. SSF53271. 1 hit.
TIGRFAMsiTIGR01744. XPRTase. 1 hit.
ProtoNetiSearch...

Entry informationi

Entry nameiXPT_STAAR
AccessioniPrimary (citable) accession number: Q6GJQ9
Entry historyi
Integrated into UniProtKB/Swiss-Prot: June 10, 2008
Last sequence update: July 19, 2004
Last modified: November 2, 2016
This is version 87 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Documents

  1. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.