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Protein

Xanthine phosphoribosyltransferase

Gene

gpt

Organism
Photobacterium profundum (strain SS9)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Protein inferred from homologyi

Functioni

Acts on guanine, xanthine and to a lesser extent hypoxanthine.UniRule annotation

Catalytic activityi

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

Cofactori

Mg2+UniRule annotationNote: Binds 1 Mg2+ ion per subunit.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 (gpt)
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)LengthDescriptionGraphical viewFeature identifierActions
Binding sitei69 – 6915-phosphoribose 1-diphosphateUniRule annotation
Metal bindingi89 – 891MagnesiumUniRule annotation
Binding sitei92 – 921XanthineUniRule annotation
Binding sitei135 – 1351Xanthine; via amide nitrogen and carbonyl oxygenUniRule annotation

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Glycosyltransferase, Transferase

Keywords - Biological processi

Purine salvage

Keywords - Ligandi

Magnesium, Metal-binding

Enzyme and pathway databases

UniPathwayiUPA00602; UER00658.

Names & Taxonomyi

Protein namesi
Recommended name:
Xanthine phosphoribosyltransferaseUniRule annotation (EC:2.4.2.22UniRule annotation)
Alternative name(s):
Xanthine-guanine phosphoribosyltransferaseUniRule annotation
Short name:
XGPRTUniRule annotation
Gene namesi
Name:gptUniRule annotation
Ordered Locus Names:PBPRA0836
OrganismiPhotobacterium profundum (strain SS9)
Taxonomic identifieri298386 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaVibrionalesVibrionaceaePhotobacterium
Proteomesi
  • UP000000593 Componenti: Chromosome 1

Subcellular locationi

  • Cell inner membrane UniRule annotation; Peripheral membrane protein UniRule annotation

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Cell inner membrane, Cell membrane, Membrane

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 152152Xanthine phosphoribosyltransferasePRO_0000139678Add
BLAST

Interactioni

Subunit structurei

Homotetramer.UniRule annotation

Protein-protein interaction databases

STRINGi298386.PBPRA0836.

Structurei

3D structure databases

ProteinModelPortaliQ6LTX6.
SMRiQ6LTX6. Positions 4-152.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni37 – 3825-phosphoribose 1-diphosphate bindingUniRule annotation
Regioni92 – 9655-phosphoribose 1-diphosphate bindingUniRule annotation

Sequence similaritiesi

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

Phylogenomic databases

eggNOGiENOG4105DYA. Bacteria.
COG0503. LUCA.
HOGENOMiHOG000226805.
KOiK00769.
OMAiKAHFATV.
OrthoDBiEOG6H1Q23.

Family and domain databases

Gene3Di3.40.50.2020. 1 hit.
HAMAPiMF_01903. XGPRT.
InterProiIPR000836. PRibTrfase_dom.
IPR029057. PRTase-like.
IPR023747. Xanthine_Guanine_PRibTrfase.
[Graphical view]
PfamiPF00156. Pribosyltran. 1 hit.
[Graphical view]
SUPFAMiSSF53271. SSF53271. 1 hit.
PROSITEiPS00103. PUR_PYR_PR_TRANSFER. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

Q6LTX6-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MSNKFVITWD NMQMYTRQLA EKLLPADQWK GIIAVSRGGL VPAAILAREL
60 70 80 90 100
NIRHVDTVCI SSYDHDHQRE MKVLKQADGD GEGFIVIDDL VDTGGTAELI
110 120 130 140 150
RAMYPKAKFV TVCAKPAGKH FIDDYVVDIA QDTWIEQPWD MAVTFVDPIS

KK
Length:152
Mass (Da):17,109
Last modified:July 5, 2004 - v1
Checksum:i66CD40B1C2438750
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CR378665 Genomic DNA. Translation: CAG19249.1.
RefSeqiWP_011217586.1. NC_006370.1.

Genome annotation databases

EnsemblBacteriaiCAG19249; CAG19249; PBPRA0836.
KEGGippr:PBPRA0836.
PATRICi22932393. VBIPhoPro109272_0918.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CR378665 Genomic DNA. Translation: CAG19249.1.
RefSeqiWP_011217586.1. NC_006370.1.

3D structure databases

ProteinModelPortaliQ6LTX6.
SMRiQ6LTX6. Positions 4-152.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi298386.PBPRA0836.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiCAG19249; CAG19249; PBPRA0836.
KEGGippr:PBPRA0836.
PATRICi22932393. VBIPhoPro109272_0918.

Phylogenomic databases

eggNOGiENOG4105DYA. Bacteria.
COG0503. LUCA.
HOGENOMiHOG000226805.
KOiK00769.
OMAiKAHFATV.
OrthoDBiEOG6H1Q23.

Enzyme and pathway databases

UniPathwayiUPA00602; UER00658.

Family and domain databases

Gene3Di3.40.50.2020. 1 hit.
HAMAPiMF_01903. XGPRT.
InterProiIPR000836. PRibTrfase_dom.
IPR029057. PRTase-like.
IPR023747. Xanthine_Guanine_PRibTrfase.
[Graphical view]
PfamiPF00156. Pribosyltran. 1 hit.
[Graphical view]
SUPFAMiSSF53271. SSF53271. 1 hit.
PROSITEiPS00103. PUR_PYR_PR_TRANSFER. 1 hit.
[Graphical view]
ProtoNetiSearch...

Publicationsi

  1. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: ATCC BAA-1253 / SS9.

Entry informationi

Entry nameiXGPT_PHOPR
AccessioniPrimary (citable) accession number: Q6LTX6
Entry historyi
Integrated into UniProtKB/Swiss-Prot: December 20, 2005
Last sequence update: July 5, 2004
Last modified: July 6, 2016
This is version 82 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

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.